WO2018194159A1 - 電気化学デバイス用電極及びその製造方法、電気化学デバイス、並びにポリマ電解質組成物 - Google Patents
電気化学デバイス用電極及びその製造方法、電気化学デバイス、並びにポリマ電解質組成物 Download PDFInfo
- Publication number
- WO2018194159A1 WO2018194159A1 PCT/JP2018/016318 JP2018016318W WO2018194159A1 WO 2018194159 A1 WO2018194159 A1 WO 2018194159A1 JP 2018016318 W JP2018016318 W JP 2018016318W WO 2018194159 A1 WO2018194159 A1 WO 2018194159A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- salt
- polymer
- electrolyte
- positive electrode
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 154
- 239000005518 polymer electrolyte Substances 0.000 title claims description 25
- 238000000034 method Methods 0.000 title description 14
- 150000003839 salts Chemical class 0.000 claims abstract description 161
- 239000003792 electrolyte Substances 0.000 claims abstract description 152
- 229920000642 polymer Polymers 0.000 claims abstract description 94
- 238000002844 melting Methods 0.000 claims abstract description 34
- 230000008018 melting Effects 0.000 claims abstract description 34
- 150000001450 anions Chemical class 0.000 claims abstract description 23
- 239000007772 electrode material Substances 0.000 claims abstract description 22
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 19
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 19
- 159000000007 calcium salts Chemical class 0.000 claims abstract description 13
- 159000000003 magnesium salts Chemical class 0.000 claims abstract description 13
- 159000000000 sodium salts Chemical class 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims description 72
- 239000002612 dispersion medium Substances 0.000 claims description 51
- 238000004519 manufacturing process Methods 0.000 claims description 39
- 239000007773 negative electrode material Substances 0.000 claims description 37
- 239000007774 positive electrode material Substances 0.000 claims description 37
- 239000002243 precursor Substances 0.000 claims description 32
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 27
- 229910002804 graphite Inorganic materials 0.000 claims description 15
- 239000010439 graphite Substances 0.000 claims description 13
- 229910020366 ClO 4 Inorganic materials 0.000 claims description 10
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 26
- -1 1-ethyl-3-methylimidazolium cation Chemical class 0.000 description 20
- 239000007784 solid electrolyte Substances 0.000 description 20
- 239000011777 magnesium Substances 0.000 description 19
- 239000011575 calcium Substances 0.000 description 17
- 239000011230 binding agent Substances 0.000 description 16
- 238000002360 preparation method Methods 0.000 description 16
- 239000002608 ionic liquid Substances 0.000 description 14
- 239000002245 particle Substances 0.000 description 14
- 239000006258 conductive agent Substances 0.000 description 13
- 229910052782 aluminium Inorganic materials 0.000 description 12
- 239000007787 solid Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229920006369 KF polymer Polymers 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 239000011888 foil Substances 0.000 description 7
- 229910003480 inorganic solid Inorganic materials 0.000 description 7
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- 229910021437 lithium-transition metal oxide Inorganic materials 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 6
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 239000002033 PVDF binder Substances 0.000 description 6
- 239000006230 acetylene black Substances 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 125000001624 naphthyl group Chemical group 0.000 description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 5
- 229910004984 Li(Co1/3Ni1/3Mn1/3)O2 Inorganic materials 0.000 description 5
- 229910020808 NaBF Inorganic materials 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 238000007606 doctor blade method Methods 0.000 description 5
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 5
- 238000001000 micrograph Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- 238000001291 vacuum drying Methods 0.000 description 5
- 229910013075 LiBF Inorganic materials 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000002041 carbon nanotube Substances 0.000 description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- YIOJGTBNHQAVBO-UHFFFAOYSA-N dimethyl-bis(prop-2-enyl)azanium Chemical compound C=CC[N+](C)(C)CC=C YIOJGTBNHQAVBO-UHFFFAOYSA-N 0.000 description 3
- 238000010494 dissociation reaction Methods 0.000 description 3
- 230000005593 dissociations Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229910052809 inorganic oxide Inorganic materials 0.000 description 3
- 239000005001 laminate film Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000005486 organic electrolyte Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- ZXMGHDIOOHOAAE-UHFFFAOYSA-N 1,1,1-trifluoro-n-(trifluoromethylsulfonyl)methanesulfonamide Chemical compound FC(F)(F)S(=O)(=O)NS(=O)(=O)C(F)(F)F ZXMGHDIOOHOAAE-UHFFFAOYSA-N 0.000 description 2
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 2
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910013063 LiBF 4 Inorganic materials 0.000 description 2
- 229910013684 LiClO 4 Inorganic materials 0.000 description 2
- 229910013870 LiPF 6 Inorganic materials 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000002134 carbon nanofiber Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- URSLCTBXQMKCFE-UHFFFAOYSA-N dihydrogenborate Chemical compound OB(O)[O-] URSLCTBXQMKCFE-UHFFFAOYSA-N 0.000 description 2
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005211 surface analysis Methods 0.000 description 2
- 229910000319 transition metal phosphate Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910002706 AlOOH Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- 229910013716 LiNi Inorganic materials 0.000 description 1
- 229910014411 LiNi1/2Mn1/2O2 Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910018286 SbF 6 Inorganic materials 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000006231 channel black Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- BXHHZLMBMOBPEH-UHFFFAOYSA-N diethyl-(2-methoxyethyl)-methylazanium Chemical compound CC[N+](C)(CC)CCOC BXHHZLMBMOBPEH-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0568—Liquid materials characterised by the solutes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0569—Liquid materials characterised by the solvents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0045—Room temperature molten salts comprising at least one organic ion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0082—Organic polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0085—Immobilising or gelification of electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0088—Composites
- H01M2300/0091—Composites in the form of mixtures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to an electrode for an electrochemical device and a method for producing the same, an electrochemical device, and a polymer electrolyte composition.
- Lithium ion secondary batteries are energy devices having a high energy density, and are used for portable devices such as notebook computers and mobile phones, and power sources for electric vehicles, taking advantage of their characteristics.
- a separator is sandwiched between a positive electrode and a negative electrode, and the separator is impregnated with an organic electrolyte.
- the organic electrolyte since the organic electrolyte is flammable, it may ignite when an abnormality occurs and the temperature of the battery rises. It is important to improve safety when starting to increase energy density and size in lithium ion secondary batteries, and it is required to avoid situations such as ignition from the configuration of lithium ion secondary batteries. Yes.
- Patent Document 1 discloses a method of adding an inorganic solid electrolyte to an electrode mixture layer in a lithium ion battery.
- the inorganic solid electrolyte used in the method described in Patent Document 1 has poor flexibility, and it is difficult to change the shape in accordance with the shape of the voids in the electrode mixture layer in the positive electrode and the negative electrode. Characteristics may not be obtained.
- the amount of the inorganic solid electrolyte added is increased in order to improve the interface forming property, the ratio of the electrode active material in the electrode relatively decreases, so that the battery characteristics tend to decrease.
- the present invention has been made in view of the above circumstances, and an electrode for an electrochemical device capable of enhancing battery characteristics even when a battery is produced by adding a solid electrolyte to an electrode mixture layer and its electrode
- An object is to provide a manufacturing method.
- an object of this invention is to provide the electrochemical device using such an electrode for electrochemical devices.
- an object of this invention is to provide the polymer electrolyte composition which can improve the ionic conductivity of an electrode mixture layer.
- a first aspect of the present invention comprises an electrode current collector and an electrode mixture layer provided on at least one main surface of the electrode current collector, the electrode mixture layer comprising an electrode active material,
- a polymer having a structural unit represented by the following general formula (1) hereinafter sometimes simply referred to as “polymer”
- electrolyte salt lithium salt, sodium salt, calcium salt, and magnesium salt 1 type of electrolyte salt
- molten salt molten salt having a melting point of 250 ° C. or less
- the electrode for an electrochemical device of the first aspect of the present invention since a good interface is formed between the electrode active material and the polymer in the electrode mixture layer, a solid electrolyte is added to the electrode mixture layer. Even when the battery is manufactured, the battery characteristics can be improved.
- the anion of the electrolyte salt is selected from the group consisting of PF 6 ⁇ , BF 4 ⁇ , N (FSO 2 ) 2 ⁇ , N (CF 3 SO 2 ) 2 ⁇ , B (C 2 O 4 ) 2 ⁇ , and ClO 4 ⁇ . It may be at least one selected.
- the electrolyte salt may be a lithium salt.
- the content of the molten salt may be 10 to 80% by mass based on the total amount of the polymer, the electrolyte salt, and the molten salt.
- Electrode device electrode may be a positive electrode. That is, the electrode current collector may be a positive electrode current collector, the electrode mixture layer may be a positive electrode mixture layer, and the electrode active material may be a positive electrode active material.
- the electrode for an electrochemical device may be a negative electrode. That is, the electrode current collector may be a negative electrode current collector, the electrode mixture layer may be a negative electrode mixture layer, and the electrode active material may be a negative electrode active material.
- the negative electrode active material may contain graphite. When the negative electrode active material contains graphite, the electrolyte salt preferably contains LiN (FSO 2 ) 2 .
- the second aspect of the present invention is an electrochemical device comprising the above-described electrode for an electrochemical device.
- the electrochemical device may be a secondary battery.
- a step of preparing an electrode precursor in which an electrode active material layer containing an electrode active material is provided on at least one main surface of an electrode current collector, and an electrode active material of the electrode precursor
- the layer has a polymer having a structural unit represented by the following general formula (1), at least one electrolyte salt selected from the group consisting of a lithium salt, a sodium salt, a calcium salt, and a magnesium salt, and a melting point of 250.
- the anion of the electrolyte salt is selected from the group consisting of PF 6 ⁇ , BF 4 ⁇ , N (FSO 2 ) 2 ⁇ , N (CF 3 SO 2 ) 2 ⁇ , B (C 2 O 4 ) 2 ⁇ , and ClO 4 ⁇ . It may be at least one selected.
- the content of the molten salt may be 10 to 80% by mass based on the total amount of the polymer, the electrolyte salt, and the molten salt.
- the dispersion medium may contain acetone.
- the mass ratio of the dispersion medium content to the polymer content (“dispersion medium content” / “polymer content”) may be 6 or less.
- At least one electrolyte selected from the group consisting of a polymer having a structural unit represented by the following general formula (1), and a lithium salt, a sodium salt, a calcium salt, and a magnesium salt.
- a polymer electrolyte composition comprising a salt and a molten salt having a melting point of 250 ° C. or lower.
- the anion of the electrolyte salt is selected from the group consisting of PF 6 ⁇ , BF 4 ⁇ , N (FSO 2 ) 2 ⁇ , N (CF 3 SO 2 ) 2 ⁇ , B (C 2 O 4 ) 2 ⁇ , and ClO 4 ⁇ . It may be at least one selected.
- the electrolyte salt may be a lithium salt.
- the content of the molten salt may be 10 to 80% by mass based on the total amount of the polymer, the electrolyte salt, and the molten salt.
- the polymer electrolyte composition may further contain a dispersion medium.
- the dispersion medium may contain acetone.
- the mass ratio of the content of the dispersion medium to the content of the polymer may be 6 or less.
- an electrode for an electrochemical device and a method for producing the same that can improve battery characteristics even when a battery is produced by adding a solid electrolyte to an electrode mixture layer.
- the electrochemical device using such an electrode for electrochemical devices is provided.
- the polymer electrolyte composition which can improve the ionic conductivity of an electrode mixture layer is provided.
- FIG. 1 is a perspective view showing an electrochemical device according to a first embodiment. It is a disassembled perspective view which shows the electrode group of the electrochemical device shown in FIG. 2A is a cross-sectional view taken along the line II of FIG. 2 for illustrating an electrode for an electrochemical device (positive electrode) according to one embodiment, and FIG. 2B is for an electrochemical device according to another embodiment. It is a schematic cross section which shows an electrode (positive electrode). 2A is a cross-sectional view taken along the line II-II in FIG. 2 for illustrating an electrode for an electrochemical device (negative electrode) according to one embodiment, and FIG. 2B is for an electrochemical device according to another embodiment. It is a schematic cross section which shows an electrode (negative electrode).
- FIG. 3A is a cross-sectional view taken along the line III-III of FIG. 2 for explaining an electrode for an electrochemical device (bipolar electrode) according to another embodiment
- FIG. It is a schematic cross section which shows the electrode for devices (bipolar electrode).
- A) is a scanning electron microscope image of the positive electrode produced in Example 1-1
- (b) is an image showing the distribution of cobalt by energy dispersive X-ray analysis in the positive electrode shown in FIG. 7 (a).
- (C) is the image which shows distribution of sulfur by the energy dispersive X-ray analysis in the positive electrode shown to Fig.7 (a).
- Example 6 is a graph showing battery performance evaluation of the secondary batteries produced in Example 1-1 and Comparative Example 1-1.
- A is a scanning electron microscope image of the positive electrode produced in Example 3-1, and (b) is a scanning electron microscope image of the positive electrode produced in Example 3-2.
- A) is a scanning electron microscope image of the positive electrode produced in Example 3-3, and (b) is a scanning electron microscope image of the positive electrode produced in Example 3-4.
- a numerical range indicated using “to” indicates a range including the numerical values described before and after “to” as the minimum value and the maximum value, respectively.
- the upper limit value or the lower limit value described in one numerical range may be replaced with the upper limit value or the lower limit value of another numerical range.
- the upper limit value or the lower limit value of the numerical range may be replaced with the values shown in the examples.
- electrode means a positive electrode or a negative electrode.
- electrode current collector an electrode mixture layer, an electrode active material, an electrode active material layer, and an electrode precursor.
- FIG. 1 is a perspective view showing an electrochemical device according to the first embodiment.
- the electrochemical device may be a secondary battery.
- aspects of the secondary battery will be described.
- the secondary battery 1 includes an electrode group 2 composed of an electrode for an electrochemical device and an electrolyte layer, and a bag-shaped battery exterior body 3 that houses the electrode group 2.
- the electrode for an electrochemical device may be a positive electrode or a negative electrode.
- the electrode for an electrochemical device (positive electrode and negative electrode) is provided with a positive electrode current collecting tab 4 and a negative electrode current collecting tab 5, respectively.
- the positive electrode current collecting tab 4 and the negative electrode current collecting tab 5 protrude from the inside of the battery outer package 3 to the outside so that the positive electrode and the negative electrode can be electrically connected to the outside of the secondary battery 1, respectively.
- the battery outer package 3 may be formed of, for example, a laminate film.
- the laminate film may be a laminate film in which a resin film such as a polyethylene terephthalate (PET) film, a metal foil such as aluminum, copper, and stainless steel, and a sealant layer such as polypropylene are laminated in this order.
- PET polyethylene terephthalate
- metal foil such as aluminum, copper, and stainless steel
- sealant layer such as polypropylene
- FIG. 2 is an exploded perspective view showing an embodiment of the electrode group 2 in the secondary battery 1 shown in FIG.
- the electrode group 2 ⁇ / b> A includes a positive electrode 6, an electrolyte layer 7, and a negative electrode 8 in this order.
- the positive electrode 6 includes a positive electrode current collector 9 and a positive electrode mixture layer 10 provided on at least one main surface of the positive electrode current collector 9.
- the positive electrode current collector 9 is provided with a positive electrode current collector tab 4.
- the negative electrode 8 includes a negative electrode current collector 11 and a negative electrode mixture layer 12 provided on at least one main surface of the negative electrode current collector 11.
- the negative electrode current collector 11 is provided with a negative electrode current collector tab 5.
- FIG. 3A is a cross-sectional view taken along the line II of FIG.
- the positive electrode 6 (first electrode for electrochemical device 13A) includes a positive electrode current collector 9 and a positive electrode composite provided on at least one main surface of the positive electrode current collector 9.
- the agent layer 10 is provided.
- FIG. 3B is a schematic cross-sectional view showing a first electrode for an electrochemical device according to another embodiment.
- the first electrochemical device electrode 13B includes a positive electrode current collector 9, a positive electrode mixture layer 10, and an electrolyte layer 7 in this order.
- the first electrochemical device electrode 13 ⁇ / b> A includes a positive electrode current collector 9.
- the positive electrode current collector 9 may be formed of aluminum, stainless steel, titanium, or the like.
- the positive electrode current collector 9 may be, for example, an aluminum perforated foil having a hole diameter of 0.1 to 10 mm, an expanded metal, a foamed metal plate, or the like.
- the positive electrode current collector 9 may be formed of any material as long as it does not cause changes such as dissolution and oxidation during use of the battery, and its shape, manufacturing method, etc. Not limited.
- the thickness of the positive electrode current collector 9 may be 1 ⁇ m or more, 5 ⁇ m or more, or 10 ⁇ m or more.
- the thickness of the positive electrode current collector 9 may be 100 ⁇ m or less, 50 ⁇ m or less, or 20 ⁇ m or less.
- the first electrochemical device electrode 13 ⁇ / b> A includes the positive electrode mixture layer 10.
- the positive electrode mixture layer 10 contains a positive electrode active material, a specific polymer, a specific electrolyte salt, and a specific molten salt.
- the positive electrode mixture layer 10 contains a positive electrode active material.
- the positive electrode active material may be, for example, a lithium transition metal compound such as a lithium transition metal oxide or a lithium transition metal phosphate.
- the lithium transition metal oxide may be lithium manganate, lithium nickelate, lithium cobaltate, or the like.
- Lithium transition metal oxide is a part of transition metals such as Mn, Ni, Co, etc. contained in lithium manganate, lithium nickelate, lithium cobaltate, etc., one or more other transition metals, or A lithium transition metal oxide substituted with a metal element (typical element) such as Mg or Al may also be used. That is, the lithium transition metal oxide may be a compound represented by LiM 1 O 2 or LiM 1 O 4 (M 1 includes at least one transition metal).
- lithium transition metal oxides are Li (Co 1/3 Ni 1/3 Mn 1/3 ) O 2 , LiNi 1/2 Mn 1/2 O 2 , LiNi 1/2 Mn 3/2 O. It may be 4 etc.
- the lithium transition metal oxide may be a compound represented by the following formula (A) from the viewpoint of further improving the energy density.
- Lithium transition metal phosphates are LiFePO 4 , LiMnPO 4 , LiMn x M 3 1-x PO 4 (0.3 ⁇ x ⁇ 1, M 3 is Fe, Ni, Co, Ti, Cu, Zn, Mg, and Or at least one element selected from the group consisting of Zr).
- the content of the positive electrode active material may be 70% by mass or more, 80% by mass or more, or 90% by mass or more based on the total amount of the positive electrode mixture layer.
- the content of the positive electrode active material may be 99% by mass or less based on the total amount of the positive electrode mixture layer.
- the positive electrode mixture layer 10 contains a polymer having a structural unit represented by the following general formula (1).
- X ⁇ represents a counter anion.
- X ⁇ for example, BF 4 ⁇ (tetrafluoroborate anion), PF 6 ⁇ (hexafluorophosphate anion), N (FSO 2 ) 2 ⁇ (bis (fluorosulfonyl) imide anion, [FSI ] -), N (CF 3 SO 2) 2 - ( bis (trifluoromethanesulfonyl) imide anion, [TFSI] -), C (SO 2 F) 3 - ( tris (fluorosulfonyl) carbanions, [f3C] - ), B (C 2 O 4 ) 2 ⁇ (bisoxalate borate anion, [BOB] ⁇ ), BF 3 (CF 3 ) ⁇ , BF 3 (C 2 F 5 ) ⁇ , BF 3 (C 3 F 7 ) ⁇ , BF 3 (C 4 F 9 ) ⁇ , C
- X ⁇ is preferably at least one selected from the group consisting of BF 4 ⁇ , PF 6 ⁇ , [FSI] ⁇ , [TFSI] ⁇ , and [f3C] ⁇ , more preferably [TFSI] ⁇ . Or [FSI] ⁇ .
- the viscosity average molecular weight Mv (g ⁇ mol ⁇ 1 ) of the polymer having the structural unit represented by the general formula (1) is not particularly limited, but is preferably 1.0 ⁇ 10 4 or more, more preferably 1.0 ⁇ . 10 5 or more. Further, the viscosity average molecular weight of the polymer is preferably 5.0 ⁇ 10 6 or less, more preferably 1.0 ⁇ 10 6 or less.
- the “viscosity average molecular weight” can be evaluated by a viscosity method which is a general measurement method. For example, from the intrinsic viscosity [ ⁇ ] measured based on JIS K 7367-3: 1999. Can be calculated.
- the polymer having the structural unit represented by the general formula (1) is preferably a polymer consisting only of the structural unit represented by the general formula (1), that is, a homopolymer, from the viewpoint of ion conductivity.
- the polymer having the structural unit represented by the general formula (1) may be a polymer represented by the following general formula (2).
- n 300 to 4000
- Y ⁇ represents a counter anion.
- Y ⁇ those similar to those exemplified for X ⁇ can be used.
- N is 300 or more, preferably 400 or more, more preferably 500 or more. Moreover, it is 4000 or less, preferably 3500 or less, more preferably 3000 or less. N is 300 to 4000, preferably 400 to 3500, and more preferably 500 to 3000.
- the production method of the polymer having the structural unit represented by the general formula (1) is not particularly limited, and for example, the production method described in Journal of Power Sources 2009, 188, 558-563 can be used.
- poly (diallyldimethylammonium) chloride [P (DADMA)] [Cl]
- P (DADMA)] [Cl] poly (diallyldimethylammonium) chloride
- a commercially available product can be used as it is.
- Li [TFSI] is dissolved in deionized water to prepare an aqueous solution containing Li [TFSI].
- the molar ratio of Li [TFSI] to [P (DADMA)] [Cl] was 1.2 to 2.0.
- the two aqueous solutions are mixed and stirred for 2 to 8 hours to precipitate a solid, and the obtained solid is collected by filtration.
- a polymer having a structural unit represented by the general formula (1) ([P (DADMA)] [TFSI]) can be obtained by washing the solid with deionized water and vacuum drying for 12 to 48 hours. it can.
- the content of the polymer having the structural unit represented by the general formula (1) may be 5 to 50% by mass based on the total amount of the polymer, the electrolyte salt described later, and the molten salt described later.
- the content of the polymer is more preferably 8% by mass or more, further preferably 15% by mass or more, based on the total amount of the polymer, the electrolyte salt, and the molten salt.
- the content of the polymer is more preferably 35% by mass or less, still more preferably 25% by mass or less, based on the total amount of the polymer, the electrolyte salt, and the molten salt.
- the positive electrode mixture layer 10 contains at least one electrolyte salt selected from the group consisting of a lithium salt, a sodium salt, a magnesium salt, and a calcium salt.
- the electrolyte salt one used as an electrolyte salt of an electrolyte solution for a normal ion battery can be used.
- the anion of the electrolyte salt includes halide ions (I ⁇ , Cl ⁇ , Br ⁇ etc.), SCN ⁇ , BF 4 ⁇ , BF 3 (CF 3 ) ⁇ , BF 3 (C 2 F 5 ) ⁇ , BF 3 (C 3 F 7 ) ⁇ , BF 3 (C 4 F 9 ) ⁇ , PF 6 ⁇ , ClO 4 ⁇ , SbF 6 ⁇ , [FSI] ⁇ , [TFSI] ⁇ , N (C 2 F 5 SO 2 ) 2 ⁇ , BPh 4 ⁇ , B (C 2 H 4 O 2 ) 2 ⁇ , [f3C] ⁇ , C (CF 3 SO 2 ) 3 ⁇ , CF 3 COO ⁇ , CF 3 SO 2 O ⁇ , C 6 F 5 SO 2 O -, [BOB] -, RCOO - (.
- R is an alkyl group having 1 to 4 carbon atoms, a phenyl group, or a naphthyl group), or the like.
- the anion of the electrolyte salt is preferably at least one selected from the group consisting of PF 6 ⁇ , BF 4 ⁇ , [FSI] ⁇ , [TFSI] ⁇ , [BOB] ⁇ , and ClO 4 ⁇ .
- [TFSI] ⁇ or [FSI] ⁇ is more preferable, and [FSI] ⁇ is more preferable.
- Lithium salts include LiPF 6 , LiBF 4 , Li [FSI], Li [TFSI], Li [f 3 C], Li [BOB], LiClO 4 , LiBF 3 (CF 3 ), LiBF 3 (C 2 F 5 ), LiBF 3 (C 3 F 7 ), LiBF 3 (C 4 F 9 ), LiC (SO 2 CF 3 ) 3 , LiCF 3 SO 2 O, LiCF 3 COO, LiRCOO (R is an alkyl group having 1 to 4 carbon atoms, A phenyl group or a naphthyl group). These may be used alone or in combination of two or more.
- Sodium salts include NaPF 6 , NaBF 4 , Na [FSI], Na [TFSI], Na [f 3 C], Na [BOB], NaClO 4 , NaBF 3 (CF 3 ), NaBF 3 (C 2 F 5 ), NaBF 3 (C 3 F 7 ), NaBF 3 (C 4 F 9 ), NaC (SO 2 CF 3 ) 3 , NaCF 3 SO 2 O, NaCF 3 COO, NaRCOO (R is an alkyl group having 1 to 4 carbon atoms, A phenyl group or a naphthyl group). These may be used alone or in combination of two or more.
- Magnesium salts are Mg (PF 6 ) 2 , Mg (BF 4 ) 2 , Mg [FSI] 2 , Mg [TFSI] 2 , Mg [f 3 C] 2 , Mg [BOB] 2 , Mg (ClO 4 ) 2 , Mg [BF 3 (CF 3 ) 3 ] 2 , Mg [BF 3 (C 2 F 5 )] 2 , Mg [BF 3 (C 3 F 7 )] 2 , Mg [BF 3 (C 4 F 9 )] 2 , Mg [C (SO 2 CF 3 ) 3 ] 2 , Mg (CF 3 SO 2 O) 2 , Mg (CF 3 COO) 2 , Mg (RCOO) 2 (R is an alkyl group having 1 to 4 carbon atoms, phenyl Or a naphthyl group). These may be used alone or in combination of two or more.
- the calcium salts are Ca (PF 6 ) 2 , Ca (BF 4 ) 2 , Ca [FSI] 2 , Ca [TFSI] 2 , Ca [f3C] 2 , Ca [BOB] 2 , Ca (ClO 4 ) 2 , Ca [BF 3 (CF 3 ) 3 ] 2 , Ca [BF 3 (C 2 F 5 )] 2 , Ca [BF 3 (C 3 F 7 )] 2 , Ca [BF 3 (C 4 F 9 )] 2 , Ca [C (SO 2 CF 3 ) 3 ] 2 , Ca (CF 3 SO 2 O) 2 , Ca (CF 3 COO) 2 , Ca (RCOO) 2 (R is an alkyl group having 1 to 4 carbon atoms, phenyl Or a naphthyl group). These may be used alone or in combination of two or more.
- a lithium salt more preferably LiPF 6 , LiBF 4 , Li [FSI], Li [TFSI], Li [f3C], Li [BOB], And at least one selected from the group consisting of LiClO 4 , more preferably Li [TFSI] or Li [FSI], particularly preferably Li [FSI].
- the mass ratio of the electrolyte salt to the polymer having the structural unit represented by the general formula (1) is not particularly limited. Preferably it is 0.1 or more, More preferably, it is 0.15 or more, More preferably, it is 0.2 or more.
- the mass ratio is preferably 1.0 or less, more preferably 0.9 or less, and still more preferably 0.8 or less. When the mass ratio is 0.1 or more, the ion carrier concentration is sufficient, and the ionic conductivity tends to be further improved. When the mass ratio is 1.0 or less, the flexibility of the electrolyte tends to be further improved.
- the content of the electrolyte salt may be 5 to 30% by mass based on the total amount of the polymer, the electrolyte salt, and the molten salt described later.
- the content of the electrolyte salt is more preferably 10% by mass or more based on the total amount of the polymer, the electrolyte salt, and the molten salt. Further, the content of the molten salt is more preferably 25% by mass or less based on the total amount of the polymer, the electrolyte salt, and the molten salt.
- the content of the electrolyte salt is not particularly limited, but may be 0.1% by mass or more based on the total amount of the positive electrode mixture layer.
- the content of the electrolyte salt may be 15% by mass or less based on the total amount of the positive electrode mixture layer.
- the positive electrode mixture layer 10 contains a molten salt having a melting point of 250 ° C. or lower.
- the molten salt is composed of a cation and an anion.
- a normal ionic liquid or a plastic crystal can be used without any particular limitation.
- ionic liquid means a molten salt that is liquid at 30 ° C., that is, a molten salt having a melting point of 30 ° C. or less
- plastic crystal is a molten salt that is solid at 30 ° C. It means a salt, that is, a molten salt having a melting point higher than 30 ° C.
- the ionic liquid can be used without particular limitation as long as it is a molten salt that is liquid at 30 ° C.
- a molten salt that is liquid at 30 ° C.
- [TFSI] -, or [F3C] - a combination of a include those which are liquid at 30 ° C..
- the melting point of the ionic liquid is not particularly limited, but is preferably 25 ° C. or less, more preferably 10 ° C. or less, and further preferably 0 ° C. or less. When the melting point is 25 ° C. or lower, the ionic conductivity tends not to decrease even at room temperature (for example, 25 ° C.) or lower.
- the lower limit of the melting point of the ionic liquid is not particularly limited, but may be ⁇ 150 ° C. or higher, ⁇ 120 ° C. or higher, or ⁇ 90 ° C. or higher.
- the plastic crystal can be used without particular limitation as long as it is a solid at 30 ° C. and is a molten salt having a melting point of 250 ° C. or lower.
- [TFSI] -, or [F3C] - a combination of, those of the solid at 30 ° C..
- the cation of the molten salt is preferably [EMI] + , [DEME] + , [Py12] + , or [Py13] + , more preferably [EMI] + from the viewpoint of ionic conductivity.
- the anion of the molten salt is preferably [FSI] ⁇ or [TFSI] ⁇ , more preferably [FSI] ⁇ from the viewpoint of ionic conductivity.
- the molten salt is [EMI] [FSI], [DEME] [FSI], [Py12] [FSI], [Py13] [FSI], [EMI] [TFSI], [DEME] [ [TFSI], [Py12] [TFSI], or [Py13] [TFSI] is preferably included, and [EMI] [FSI] is more preferably included.
- the melting point of the plastic crystal is 250 ° C. or less, preferably 200 ° C. or less, more preferably 150 ° C. or less, and further preferably 100 ° C. or less.
- the ionic conductivity tends to increase.
- fusing point of molten salt is not restrict
- the content of the molten salt may be 10 to 80% by mass based on the total amount of the polymer, the electrolyte salt, and the molten salt.
- the content of the molten salt is more preferably 20% by mass or more, further preferably 30% by mass or more, and particularly preferably 40% by mass or more based on the total amount of the polymer, the electrolyte salt, and the molten salt.
- the content of the molten salt is more preferably 75% by mass or less, still more preferably 70% by mass or less, based on the total amount of the polymer, the electrolyte salt, and the molten salt.
- the content of the molten salt is not particularly limited, but may be 0.5% by mass or more based on the total amount of the positive electrode mixture layer.
- the content of the molten salt may be 25% by mass or less based on the total amount of the positive electrode mixture layer.
- the positive electrode mixture layer 10 may further contain a conductive agent, a binder and the like.
- the conductive agent may be carbon black, graphite, carbon fiber, carbon nanotube, acetylene black or the like.
- the content of the conductive agent may be 1 to 15% by mass based on the total amount of the positive electrode mixture layer.
- the binder is a resin such as polyvinylidene fluoride, polyacrylonitrile, styrene / butadiene rubber, carboxymethyl cellulose, fluorine rubber, ethylene / propylene rubber, polyacrylic acid, polyimide, polyamide; copolymer resin having these resins as a main skeleton ( For example, it may be a polyvinylidene fluoride-hexafluoropropylene copolymer).
- the content of the binder may be 1 to 15% by mass based on the total amount of the positive electrode mixture layer.
- the thickness of the positive electrode mixture layer 10 is not particularly limited, but may be 10 ⁇ m or more, 20 ⁇ m or more, or 30 ⁇ m or more.
- the thickness of the positive electrode mixture layer 10 may be 100 ⁇ m or less, 80 ⁇ m or less, or 60 ⁇ m or less.
- the mixture density of the positive electrode mixture layer 10 may be 1 g / cm 3 or more.
- the electrolyte layer 7 contains a solid electrolyte, an electrolyte salt, and a molten salt.
- the electrolyte layer 7 what formed the electrolyte composition containing the said component in the sheet form (electrolyte sheet
- solid electrolytes examples include polymer electrolytes and inorganic solid electrolytes.
- the polymer electrolyte and the inorganic solid electrolyte are not particularly limited, and those used as a polymer electrolyte and an inorganic solid electrolyte for a normal ion battery can be used.
- the polymer having the structural unit represented by the general formula (1) described above may have properties as a polymer electrolyte. Therefore, the polymer can be suitably used as a polymer electrolyte.
- the inorganic solid electrolyte may be Li 7 La 3 Zr 2 O 12 (LLZ) or the like.
- the electrolyte salt and molten salt may be the same as the electrolyte salt and molten salt contained in the positive electrode mixture layer described above.
- the electrolyte composition may further contain an additive having lithium salt dissociation ability such as borate ester and aluminate ester, if necessary.
- an additive having lithium salt dissociation ability such as borate ester and aluminate ester, if necessary.
- the electrolyte sheet is formed by forming an electrolyte composition containing oxide particles, a binder, an electrolyte salt, and an ionic liquid into a sheet shape. It may be.
- the oxide particles are, for example, inorganic oxide particles.
- the inorganic oxide is an inorganic oxide containing, for example, Li, Mg, Al, Si, Ca, Ti, Zr, La, Na, K, Ba, Sr, V, Nb, B, Ge and the like as constituent elements. Good.
- the oxide particles are at least one particle selected from the group consisting of SiO 2 , Al 2 O 3 , AlOOH, MgO, CaO, ZrO 2 , TiO 2 , Li 7 La 3 Zr 2 O 12 , and BaTiO 3. May be. Since the oxide particles have polarity, it is possible to promote dissociation of the electrolyte in the electrolyte layer 7 and improve battery characteristics.
- the binder, electrolyte salt, and ionic liquid may be the same as the binder, electrolyte salt, and ionic liquid contained in the positive electrode mixture layer described above.
- the thickness of the electrolyte layer 7 may be 5 to 200 ⁇ m from the viewpoint of increasing strength and improving safety.
- FIG. 4A is a cross-sectional view taken along the line II-II in FIG.
- the negative electrode 8 (second electrochemical device electrode 14A) includes a negative electrode current collector 11 and a negative electrode composite provided on at least one main surface of the negative electrode current collector 11. And an agent layer 12.
- FIG. 4B is a schematic cross-sectional view showing a second electrode for an electrochemical device according to another embodiment.
- the second electrode for electrochemical device 14B includes a negative electrode current collector 11, a negative electrode mixture layer 12, and an electrolyte layer 7 in this order. Since the electrolyte layer 7 is the same as the electrolyte layer 7 in the first electrode for electrochemical devices described above, the description thereof is omitted below.
- the second electrochemical device electrode 14 ⁇ / b> A includes the negative electrode current collector 11.
- the negative electrode current collector 11 may be formed of copper, stainless steel, titanium, nickel, or the like. Specifically, the negative electrode current collector 11 may be a rolled copper foil, a copper perforated foil having holes having a hole diameter of 0.1 to 10 mm, an expanded metal, a foamed metal plate, or the like.
- the negative electrode current collector 11 may be formed of any material other than the above, and its shape, manufacturing method, and the like are not limited.
- the thickness of the negative electrode current collector 11 may be 1 ⁇ m or more, 5 ⁇ m or more, or 10 ⁇ m or more.
- the thickness of the negative electrode current collector 11 may be 100 ⁇ m or less, 50 ⁇ m or less, or 20 ⁇ m or less.
- the second electrochemical device electrode 14 ⁇ / b> A includes the negative electrode mixture layer 12.
- the negative electrode mixture layer 12 contains a negative electrode active material, a specific polymer, a specific electrolyte salt, and a specific molten salt.
- the negative electrode mixture layer 12 contains a negative electrode active material. What is used as a negative electrode active material of the field
- the negative electrode active material include lithium metal, lithium alloy, metal compound, carbon material, metal complex, and organic polymer compound. These may be used alone or in combination of two or more.
- the negative electrode active material is preferably a carbon material. Examples of the carbon material include graphite such as natural graphite (flaky graphite, etc.), artificial graphite, carbon black such as acetylene black, ketjen black, channel black, furnace black, lamp black, thermal black, amorphous carbon, Examples thereof include carbon fiber.
- the negative electrode active material preferably contains graphite.
- the content of the negative electrode active material may be 60% by mass or more, 65% by mass or more, or 70% by mass or more based on the total amount of the negative electrode mixture layer.
- the content of the negative electrode active material may be 99% by mass or less, 95% by mass or less, or 90% by mass or less based on the total amount of the negative electrode mixture layer.
- the negative electrode mixture layer 12 is selected from the group consisting of a polymer having a structural unit represented by the general formula (1) contained in the positive electrode mixture layer 10 and a lithium salt, sodium salt, calcium salt, and magnesium salt. At least one electrolyte salt and a molten salt having a melting point of 250 ° C. or lower. These contents are the same as those of the positive electrode mixture layer 10.
- the electrolyte salt preferably contains Li [FSI].
- the battery characteristics of the obtained secondary battery tend to be further improved.
- the negative electrode mixture layer 12 may further contain a conductive agent, a binder and the like contained in the positive electrode mixture layer 10 described above. These contents are the same as those of the positive electrode mixture layer 10.
- the thickness of the negative electrode mixture layer 12 is not particularly limited, but may be 10 ⁇ m or more, 15 ⁇ m or more, or 20 ⁇ m or more.
- the thickness of the negative electrode mixture layer 12 may be 50 ⁇ m or less, 45 ⁇ m or less, or 40 ⁇ m or less.
- the mixture density of the negative electrode mixture layer 12 may be 1 g / cm 3 or more.
- the manufacturing method of the secondary battery 1 includes a first step of manufacturing the first electrochemical device electrode 13A (positive electrode 6), and a second electrochemical device electrode 14A (negative electrode 8). A third step of providing an electrolyte layer 7 between the first electrochemical device electrode 13A (positive electrode 6) and the second electrochemical device electrode 14A (negative electrode 8); .
- a positive electrode active material layer containing a positive electrode active material is provided on at least one main surface of the positive electrode current collector.
- a step of preparing a positive electrode precursor, a polymer having a structural unit represented by the general formula (1) in the positive electrode active material layer of the positive electrode precursor, and a group consisting of lithium salt, sodium salt, calcium salt, and magnesium salt A step of adding a slurry containing at least one electrolyte salt selected from the group, a molten salt having a melting point of 250 ° C.
- the positive electrode mixture layer can be composed of an electrode active material, a polymer, an electrolyte salt, and a molten salt.
- the positive electrode active material layer in the positive electrode precursor is prepared, for example, by preparing a slurry for forming a positive electrode active material layer in which a material containing a positive electrode active material, a conductive agent, a binder or the like is dispersed in a dispersion medium, and the positive electrode active material layer forming slurry.
- a dispersion medium is not particularly limited, but may be water, an aqueous solvent such as a mixed solvent of alcohol and water, or an organic solvent such as N-methyl-2-pyrrolidone.
- a slurry (a slurry for forming a positive electrode mixture layer) in which a material containing a polymer, an electrolyte salt, and a molten salt is dispersed in a dispersion medium is prepared, and the slurry is added to the positive electrode active material layer.
- the method for adding the slurry is not particularly limited, and examples thereof include dripping, coating, and printing.
- the dispersion medium is not particularly limited as long as it dissolves the polymer, but may be acetone, ethyl methyl ketone, ⁇ -butyrolactone, or the like. Among these, it is preferable that a dispersion medium contains acetone.
- the content of the polymer, the content of the electrolyte salt, and the content of the molten salt relative to the total amount of the polymer, the electrolyte salt, and the molten salt in the slurry are the same as those of the polymer, electrolyte salt, and molten salt in the positive electrode mixture layer 10 described above. It may be the same as the polymer content, the electrolyte salt content, and the molten salt content relative to the total amount.
- the mass ratio of the content of the dispersion medium to the content of the polymer may be 6 or less.
- the mass ratio of the content of the dispersion medium to the content of the polymer is more preferably 5.5 or less, and even more preferably 5 or less.
- the mass ratio of the content of the dispersion medium to the content of the polymer is 6 or less, the polymer filling property of the positive electrode mixture layer can be further improved, and better ionic conductivity tends to be obtained.
- the lower limit value of the mass ratio of the dispersion medium content to the polymer content is not particularly limited, and may be, for example, 0.1 or more, 0.5 or more, 1 or more, or 2 or more.
- volatile components are removed from the slurry added to the positive electrode active material layer to form the positive electrode mixture layer 10.
- the method for removing the volatile component is not particularly limited, and can be performed by a commonly used method.
- the second electrochemical device electrode 14A (negative electrode 8) in the second step can be produced by the same manufacturing method as the first electrochemical device electrode 13A (positive electrode 6) in the first step described above. it can. That is, the manufacturing method of the second electrode for electrochemical device 14A (negative electrode 8) prepares a negative electrode precursor in which a negative electrode active material layer containing a negative electrode active material is provided on at least one main surface of a negative electrode current collector.
- At least selected from the group consisting of a polymer having a structural unit represented by the general formula (1) and a lithium salt, sodium salt, calcium salt, and magnesium salt in the negative electrode active material layer of the negative electrode precursor A step of adding a slurry containing one type of electrolyte salt, a molten salt having a melting point of 250 ° C. or less, and a dispersion medium; and removing a volatile component from the slurry added to the negative electrode active material layer; Forming an agent layer. Since the volatile component (dispersion medium) is removed, the negative electrode mixture layer can be composed of an electrode active material, a polymer, an electrolyte salt, and a molten salt.
- the electrolyte layer 7 is at least one of the positive electrode mixture layer 10 side of the first electrochemical device electrode 13A (positive electrode 6) and the negative electrode mixture layer 12 side of the second electrochemical device electrode 14A (negative electrode 8). One is formed by coating. The electrolyte layer 7 is applied to both the positive electrode mixture layer 10 side of the first electrochemical device electrode 13A (positive electrode 6) and the negative electrode mixture layer 12 side of the second electrochemical device electrode 14A (negative electrode 8). May be formed. In this case, for example, the positive electrode 6 provided with the electrolyte layer 7 (that is, the first electrochemical device electrode 13B) and the negative electrode 8 provided with the electrolyte layer 7 (that is, the second electrochemical device electrode 14B). ) Are stacked such that the electrolyte layers 7 are in contact with each other, whereby the secondary battery 1 can be manufactured.
- the electrolyte layer 7 is obtained by kneading the material used for the electrolyte layer 7 and dispersing it in a dispersion medium to obtain an electrolyte sheet forming slurry. And can be prepared by coating on a substrate and removing the dispersion medium.
- the dispersion medium may be an organic solvent such as acetone, ethyl methyl ketone, ⁇ -butyrolactone, N-methyl-2-pyrrolidone.
- the first electrochemical device electrode 13A (positive electrode 6), the electrolyte layer 7, and the second electrochemical device electrode 14A (negative electrode 8) are laminated by, for example, lamination.
- the secondary battery 1 can be manufactured.
- the electrolyte layer 7 is on the positive electrode mixture layer 10 side of the first electrochemical device electrode 13A (positive electrode 6) and on the negative electrode mixture layer 12 side of the second electrochemical device electrode 14A (negative electrode 8).
- the positive electrode current collector 9, the positive electrode mixture layer 10, the electrolyte layer 7, the negative electrode mixture layer 12, and the negative electrode current collector 11 are stacked in this order.
- the method for forming the electrolyte layer 7 on the positive electrode mixture layer 10 of the positive electrode 6 is, for example, by dispersing the material used for the electrolyte layer 7 in a dispersion medium.
- An example is a method in which after the slurry for forming an electrolyte layer is obtained, the slurry for forming an electrolyte layer is applied onto the positive electrode mixture layer 10 using an applicator.
- the dispersion medium may be an organic solvent such as acetone, ethyl methyl ketone, ⁇ -butyrolactone, N-methyl-2-pyrrolidone.
- the electrolyte salt may be dissolved in the molten salt in advance and then dispersed in the dispersion medium together with other materials.
- the method for forming the electrolyte layer 7 on the negative electrode mixture layer 12 of the negative electrode 8 (that is, the method for producing the second electrochemical device electrode 14B) is to form the electrolyte layer 7 on the positive electrode mixture layer 10 of the positive electrode 6. It may be similar to the method.
- FIG. 5 is an exploded perspective view showing an electrode group of the secondary battery according to the second embodiment.
- the secondary battery in the second embodiment is different from the secondary battery in the first embodiment in that the electrode group 2 ⁇ / b> B further includes a bipolar electrode 15. That is, the electrode group 2B includes the positive electrode 6, the first electrolyte layer 7, the bipolar electrode 15, the second electrolyte layer 7, and the negative electrode 8 in this order.
- the bipolar electrode 15 is provided on the surface of the bipolar electrode current collector 16, the positive electrode mixture layer 10 provided on the surface of the bipolar electrode current collector 16 on the negative electrode 8 side, and the surface of the bipolar electrode current collector 16 on the positive electrode 6 side.
- the negative electrode mixture layer 12 is provided.
- FIG. 6A is a cross-sectional view taken along line III-III in FIG.
- the bipolar electrode 15 constitutes a third electrochemical device electrode. That is, as shown in FIG. 6A, the third electrode 17 ⁇ / b> A for electrochemical devices includes a bipolar electrode current collector 16 and a positive electrode mixture layer provided on one surface of the bipolar electrode current collector 16. 10 and a negative electrode mixture layer 12 provided on the other surface of the bipolar electrode current collector 16.
- FIG. 6B is a schematic cross-sectional view showing a third electrode for an electrochemical device (bipolar electrode member) according to another embodiment.
- the third electrode for electrochemical device 17B includes a bipolar electrode current collector 16, and a positive electrode mixture layer 10 provided on one surface of the bipolar electrode current collector 16.
- a second electrolyte layer 7 provided on the opposite side of the positive electrode mixture layer 10 from the bipolar electrode current collector 16, a negative electrode mixture layer 12 provided on the other surface of the bipolar electrode current collector 16, And a first electrolyte layer 7 provided on the opposite side of the negative electrode mixture layer 12 from the bipolar electrode current collector 16.
- the bipolar electrode current collector 16 may be aluminum, stainless steel, titanium or the like, or may be a clad material formed by rolling and joining aluminum and copper or stainless steel and copper.
- the first electrolyte layer 7 and the second electrolyte layer 7 may be the same or different from each other.
- the polymer electrolyte composition includes a polymer having a structural unit represented by the general formula (1), at least one electrolyte salt selected from the group consisting of a lithium salt, a sodium salt, a calcium salt, and a magnesium salt, and a melting point And a molten salt having a temperature of 250 ° C. or lower.
- the polymer electrolyte composition may further contain a dispersion medium.
- the polymer, electrolyte salt, and molten salt may be the same as those exemplified in the polymer, electrolyte salt, and molten salt in the positive electrode mixture layer 10 described above.
- the content of the polymer, the content of the electrolyte salt, and the content of the molten salt relative to the total amount of the polymer, the electrolyte salt, and the molten salt are the total amount of the polymer, the electrolyte salt, and the molten salt in the positive electrode mixture layer 10 described above.
- the content may be the same as the numerical values exemplified for the polymer content, the electrolyte salt content, and the molten salt content.
- the dispersion medium may be the same as the dispersion medium exemplified in the slurry (the slurry for forming the positive electrode mixture layer) in the first step for producing the first electrode for electrochemical device 13A (positive electrode 6).
- the mass ratio of the content of the dispersion medium to the content of the polymer is the mass ratio of the content of the dispersion medium to the content of the polymer in the first step for producing the first electrode for electrochemical device 13A (positive electrode 6). It may be the same as the exemplified numerical value.
- This positive electrode active material layer forming slurry was applied to both surfaces (both main surfaces) on a positive electrode current collector (a 20 ⁇ m thick aluminum foil), dried at 120 ° C., rolled, and coated on one side at 60 g / m. 2.
- a positive electrode active material layer having a mixture density of 2.3 g / cm 3 was formed to prepare a positive electrode precursor.
- This slurry for forming a negative electrode active material layer was applied to both sides of a negative electrode current collector (aluminum foil having a thickness of 20 ⁇ m), dried at 120 ° C. and rolled, and the coating amount on one side was 67 g / m 2 .
- a negative electrode active material layer of 8 g / cm 3 was formed to prepare a negative electrode precursor.
- the mass ratio of the content of the dispersion medium to the content of the polymer of the slurry A was 3. Further, 2 parts by mass of Li [TFSI] as an electrolyte salt, 10 parts by mass of [Py12] [TFSI] as a molten salt, and 16 parts by mass of acetone as a dispersion medium are added to 8 parts by mass of the obtained polymer. Stirring was performed to obtain slurry B (slurry for forming an electrolyte sheet).
- Slurry B was dropped on a SUS plate having a diameter of 16 mm and dried at 40 ° C. for 2 hours to volatilize acetone. Then, it dried under reduced pressure of 1.0 ⁇ 10 4 Pa or less (0.1 atm or less) at 60 ° C. for 10 hours to obtain an electrolyte sheet having a thickness of 400 ⁇ m.
- Example 1-1 Preparation of positive electrode> Slurry A was added to the positive electrode active material layer of the positive electrode precursor prepared above by a doctor blade method with a gap of 200 ⁇ m. Then, using a vacuum desiccator, 0.05 MPa pressure reduction and atmospheric pressure release were repeated 10 times to remove volatile components to produce a positive electrode mixture layer, and a positive electrode provided with a positive electrode mixture layer was obtained.
- Slurry A was added to the negative electrode active material layer of the negative electrode precursor prepared above by a doctor blade method with a gap of 200 ⁇ m. Then, using a vacuum desiccator, 0.05 MPa pressure reduction and atmospheric pressure release were repeated 10 times to remove volatile components to produce a negative electrode mixture layer, and a negative electrode provided with a negative electrode mixture layer was obtained.
- Slurry B was applied to the positive electrode mixture layer of the obtained positive electrode by a doctor blade method with a gap of 250 ⁇ m.
- a vacuum desiccator 0.05 MPa pressure reduction and atmospheric pressure release were repeated 10 times, and vacuum drying was performed at 60 ° C. for 12 hours to obtain a positive electrode having an electrolyte layer with a thickness of 30 ⁇ m on the positive electrode mixture layer.
- a negative electrode having an electrolyte layer with a thickness of 30 ⁇ m was obtained on the negative electrode mixture layer of the negative electrode.
- the positive electrode and negative electrode having the electrolyte layer prepared above were punched out to ⁇ 15 mm in order to produce a coin-type battery.
- the positive electrode and the negative electrode were overlapped and placed in a CR2032-type coin cell container so that the electrolyte layers were in contact with each other.
- the obtained laminated body was sealed by caulking the upper part of the battery container via an insulating gasket, whereby the secondary battery of Example 1 was obtained.
- battery preparation was performed in the glove box of argon atmosphere.
- FIG. 7A is a cross-sectional image of one location with the positive electrode produced in Example 1, taken with a scanning electron microscope (SEM).
- the positive electrode includes a positive electrode current collector 30 and a positive electrode mixture layer 20 provided on at least one main surface of the positive electrode current collector 30.
- FIGS. 7B and 7C The results of surface analysis (element mapping) at the location shown in FIG. 7A are shown in FIGS. 7B and 7C.
- Surface analysis was performed by energy dispersive X-ray analysis (SEM-EDX) attached to the SEM.
- the pale (white) spot in FIG. 7B is a spot where cobalt is present.
- Cobalt is derived from Li (Co 1/3 Ni 1/3 Mn 1/3 ) O 2 which is a positive electrode active material.
- the pale (white) spot in FIG. 7C is a spot where sulfur is present.
- Sulfur is derived from [TFSI] of [P (DADMA)] [TFSI], Li [TFSI], and [Py12] [TFSI].
- components such as a polymer are uniformly dispersed in the positive electrode material, suggesting that an interface is formed between the polymer and other components and the positive electrode material.
- Battery performance was evaluated using the secondary battery produced by the above method. Using a charge / discharge device (Toyo System Co., Ltd., trade name: TOSCAT-3200), charge / discharge measurement was performed at 50 ° C. and 0.05C. C represents “current value [A] / design theoretical capacity [Ah]”, and 1 C represents a current value for fully charging or discharging the battery in one hour. The results are shown in Table 1. It can be said that the larger the value of the discharge capacity, the better the battery characteristics.
- FIG. 8 is a graph showing the battery performance evaluation of the secondary batteries produced in Example 1 and Comparative Example 1.
- the secondary battery of Example 1 was found to have a discharge capacity approximately twice that of the secondary battery of Comparative Example 1 and excellent battery characteristics. From these results, it was confirmed that the electrode for an electrochemical device of the present invention can enhance battery characteristics even when a battery is produced by adding a solid electrolyte to the electrode mixture layer.
- This positive electrode active material layer-forming slurry is applied to the main surface of the positive electrode current collector (aluminum foil having a thickness of 20 ⁇ m), dried at 120 ° C., rolled, and coated on one side at 120 g / m 2 .
- a positive electrode active material layer of 2.7 g / cm 3 was formed to prepare a positive electrode precursor.
- carbon nanotube conductive agent, trade name: VGCF, fiber diameter 150 nm (manufacturer catalog value), Showa Denko KK) 0.4 part by mass
- This negative electrode active material layer forming slurry is applied to the main surface on the negative electrode current collector (copper foil having a thickness of 10 ⁇ m), dried at 80 ° C. and rolled, and the coating amount on one side is 60 g / m 2 , the mixture density is 1.
- a negative electrode active material layer of .6 g / cm 3 was formed to prepare a negative electrode precursor.
- an ionic liquid solution of Li [TFSI] is prepared by dissolving the electrolyte salt in [DEME] [TFSI] so that the concentration of the electrolyte salt is 1.5 mol / L. did.
- the obtained ionic liquid solution, SiO 2 particles, binder (trade name: Kureha KF Polymer # 8500, Kureha Co., Ltd.), and NMP were mixed in 43 parts by mass, 23 parts by mass, 34 parts by mass, and 143 parts by mass, respectively.
- a slurry for forming an electrolyte sheet was prepared.
- This slurry for forming an electrolyte sheet was applied to the main surface on the support film and dried at 80 ° C. to prepare an electrolyte sheet having a thickness of 20 ⁇ m. In order to produce a secondary battery, the obtained electrolyte sheet was punched into a circular shape.
- Example 2-1 Preparation of positive electrode and negative electrode> Slurry C was added to the positive electrode active material layer of the positive electrode precursor and negative electrode active material layer of the negative electrode precursor produced above by applying a slurry with a gap of 150 ⁇ m by the doctor blade method. Then, the volatile component (dispersion medium) is removed by vacuum drying at 60 ° C. for 12 hours to produce a positive electrode mixture layer and a negative electrode mixture layer. A negative electrode provided was obtained. In order to produce a secondary battery, the obtained positive electrode and negative electrode were punched into a circular shape.
- a positive electrode, an electrolyte sheet, and a negative electrode punched into a circular shape were stacked in this order and placed in a CR2032-type coin cell container.
- the obtained laminated body was sealed by caulking the upper part of the battery container via an insulating gasket, to obtain a secondary battery of Example 2-1.
- Example 2-2 A secondary battery of Example 2-2 was obtained in the same manner as Example 2-1, except that the slurry C was changed to the slurry D.
- Example 2-3 A secondary battery of Example 2-3 was obtained in the same manner as Example 2-1, except that the slurry C was changed to the slurry E.
- Example 2-4 A secondary battery of Example 2-4 was obtained in the same manner as Example 2-1, except that the slurry C was changed to the slurry F.
- Example 2-5 A secondary battery of Example 2-5 was obtained in the same manner as Example 2-1, except that the slurry C was changed to the slurry G.
- Comparative Example 2-1 A secondary battery of Comparative Example 2-1 was obtained in the same manner as in Example 2-1, except that the slurry C was not applied to the positive electrode active material layer of the positive electrode precursor and the negative electrode active material layer of the negative electrode precursor. .
- Battery performance was evaluated using the secondary batteries of Examples 2-1 to 2-5 and Comparative Example 2-1 manufactured by the above method.
- the charge / discharge capacity at 25 ° C. was measured under the following charge / discharge conditions using a charge / discharge device (Toyo System Co., Ltd., trade name: TOSCAT-3200).
- the results are shown in Table 3. It can be said that the larger the value of the discharge capacity, the better the battery characteristics.
- the charge capacity and discharge capacity of .05C were determined.
- the secondary batteries of Examples 2-1 to 2-5 were found to have better battery characteristics than the secondary battery of Comparative Example 2-1. From these results, it was confirmed that the electrode for an electrochemical device of the present invention can enhance battery characteristics even when a battery is produced by adding a solid electrolyte to the electrode mixture layer.
- This positive electrode active material layer-forming slurry is applied to the main surface of the positive electrode current collector (aluminum foil having a thickness of 20 ⁇ m), dried at 120 ° C., rolled, and coated on one side at 120 g / m 2 .
- a positive electrode active material layer of 2.7 g / cm 3 was formed to prepare a positive electrode precursor. Then, the electrode was processed for production of a laminate type cell.
- carbon nanotube conductive agent, trade name: VGCF, fiber diameter 150 nm (manufacturer catalog value), Showa Denko KK) 0.4 part by mass
- This negative electrode active material layer forming slurry is applied to the main surface on the negative electrode current collector (copper foil having a thickness of 10 ⁇ m), dried at 80 ° C. and rolled, and the coating amount on one side is 60 g / m 2 , the mixture density is 1.
- a negative electrode active material layer of .6 g / cm 3 was formed to prepare a negative electrode precursor. Then, the electrode was processed for production of a laminate type cell.
- Li [FSI] is used as an electrolyte salt, and dissolved in [Py13] [FSI] which is an ionic liquid so that the concentration of the electrolyte salt is 1.5 mol / L to prepare an ionic liquid solution of Li [FSI].
- the obtained ionic liquid solution, SiO 2 particles, binder (trade name: Kureha KF Polymer # 8500, Kureha Co., Ltd.), and NMP were mixed in 43 parts by mass, 23 parts by mass, 34 parts by mass, and 143 parts by mass, respectively.
- a slurry for forming an electrolyte sheet was prepared. This slurry for forming an electrolyte sheet was applied to the main surface on the support film and dried at 80 ° C. to prepare an electrolyte sheet having a thickness of 20 ⁇ m.
- Example 3-1 Preparation of positive electrode and negative electrode> Slurry H was added to the positive electrode active material layer of the positive electrode precursor and negative electrode active material layer of the negative electrode precursor produced above by applying a slurry blade with a gap of 150 ⁇ m by the doctor blade method. Then, the volatile component (dispersion medium) is removed by vacuum drying at 60 ° C. for 12 hours to prepare a positive electrode mixture layer and a negative electrode mixture layer, and a positive electrode and a negative electrode mixture layer including the positive electrode mixture layer are provided. A negative electrode was obtained.
- Example 3-2 A secondary battery of Example 3-2 was obtained in the same manner as Example 3-1, except that the slurry H was changed to the slurry I.
- Example 3-3 A secondary battery of Example 3-3 was obtained in the same manner as Example 3-1, except that the slurry H was changed to the slurry J.
- Example 3-4 A secondary battery of Example 3-4 was obtained in the same manner as Example 3-1, except that the slurry H was changed to the slurry K.
- Battery performance was evaluated using the secondary batteries of Examples 3-1 to 3-4 produced by the above method.
- the charge / discharge capacity at 25 ° C. was measured at 5 ° C. and 0.05 C using a charge / discharge device (Toyo System Co., Ltd., trade name: TOSCAT-3200).
- Discharge capacity is a constant current (CCCV) charge at a final voltage of 4.2V and 0.05C, and then a cycle of constant current (CC) discharge to a final voltage of 2.7V at 0.05C.
- C means “current value (A) / battery capacity (Ah)”.
- the results are shown in Table 5. It can be said that the larger the value of the discharge capacity, the better the battery characteristics.
- FIGS. 9 (a) and 9 (b) and FIGS. 10 (a) and 10 (b) show one location of the positive electrode produced in Examples 3-1 to 3-4, which was taken with a scanning electron microscope (SEM). It is a cross-sectional image.
- the positive electrode includes a positive electrode current collector 30 and a positive electrode mixture layer 20 provided on at least one main surface of the positive electrode current collector 30. From the comparison of the cross-sectional image shown in FIG. 9 and the cross-sectional image shown in FIG. 10, it was observed that the polymer filling property of the positive electrode mixture layer tends to improve as the acetone used in the slurry decreases.
- the secondary batteries of Examples 3-1 to 3-4 were all excellent in battery characteristics. From these results, it was confirmed that the electrode for an electrochemical device of the present invention can enhance battery characteristics even when a battery is produced by adding a solid electrolyte to the electrode mixture layer. On the other hand, as the mass ratio of the content of the dispersion medium to the content of the polymer becomes smaller, the positive electrode mixture layer can be more fully filled with the polymer, and better ion conductivity tends to be obtained. It was suggested that there is.
- an electrode for an electrochemical device and a method for producing the same that can improve battery characteristics even when a battery is produced by adding a solid electrolyte to an electrode mixture layer.
- the electrochemical device using such an electrode for electrochemical devices is provided.
- the polymer electrolyte composition which can improve the ionic conductivity of an electrode mixture layer is provided.
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Dispersion Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
[EMI]+:1-エチル-3-メチルイミダゾリウムカチオン
[DEME]+:N,N-ジエチル-N-メチル-N-(2-メトキシエチル)アンモニウムカチオン
[Py12]+:N-エチル-N-メチルピロリジニウムカチオン
[Py13]+:N-メチル-N-プロピルピロリジニウムカチオン
[PP13]+:N-メチル-N-プロピルピペリジニウムカチオン
[FSI]-:ビス(フルオロスルホニル)イミドアニオン
[TFSI]-:ビス(トリフルオロメタンスルホニル)イミドアニオン
[f3C]-:トリス(フルオロスルホニル)カルボアニオン
[BOB]-:ビスオキサレートボラートアニオン
[P(DADMA)][Cl]:ポリ(ジアリルジメチルアンモニウム)クロライド
[P(DADMA)][TFSI]:ポリ(ジアリルジメチルアンモニウム)ビス(トリフルオロメタンスルホニル)イミド
図1は、第1実施形態に係る電気化学デバイスを示す斜視図である。電気化学デバイスは、二次電池であってよい。以下、二次電池の態様について説明する。
LiaNibCocM2 dO2+e (A)
[式(A)中、M2は、Al、Mn、Mg、及びCaからなる群より選ばれる少なくとも1種であり、a、b、c、d、及びeは、それぞれ0.2≦a≦1.2、0.5≦b≦0.9、0.1≦c≦0.4、0≦d≦0.2、-0.2≦e≦0.2、かつb+c+d=1を満たす数である。]
ポリマ電解質組成物は、一般式(1)で表される構造単位を有するポリマと、リチウム塩、ナトリウム塩、カルシウム塩、及びマグネシウム塩からなる群より選択される少なくとも1種の電解質塩と、融点が250℃以下である溶融塩と、を含有する。ポリマ電解質組成物は、電極合剤層に適用することによって、電極合剤層のイオン導電性を向上させることが可能となる。そのため、ポリマ電解質組成物は、電極合剤層形成用として好適に用いることができる。ポリマ電解質組成物は、分散媒をさらに含有していてもよい。
[二次電池用電極及び二次電池の作製]
<正極前駆体の作製>
Li(Co1/3Ni1/3Mn1/3)O2(正極活物質)80質量部、アセチレンブラック(導電剤、商品名:HS-100、平均粒径48nm(製造元カタログ値)、電気化学工業株式会社)10質量部、ポリフッ化ビニリデン溶液(バインダ、商品名:クレハKFポリマ#1120、固形分:12質量%、株式会社クレハ)83質量部、及びN-メチル-2-ピロリドン(分散媒、NMP)2.5質量部を混合して正極活物質層形成用スラリを調製した。この正極活物質層形成用スラリを正極集電体(厚さ20μmのアルミニウム箔)上の両面(両方の主面)に塗布し、120℃で乾燥後、圧延して、片面塗布量60g/m2、合剤密度2.3g/cm3の正極活物質層を形成し、正極前駆体を作製した。
Li4Ti5O12(負極活物質)88質量部、アセチレンブラック(導電剤、商品名:HS-100、平均粒径48nm(製造元カタログ値)、電気化学工業株式会社)5質量部、ポリフッ化ビニリデン溶液(バインダ、商品名:クレハKFポリマ#9130、固形分:13質量%、株式会社クレハ)54質量部、及びN-メチル-2-ピロリドン(分散媒、NMP)23質量部を混合して負極活物質層形成用スラリを調製した。この負極活物質層形成用スラリを負極集電体(厚さ20μmのアルミニウム箔)上の両面に塗布し、120℃で乾燥後圧延して、片面塗布量67g/m2、合剤密度1.8g/cm3の負極活物質層を形成し、負極前駆体を作製した。
一般式(1)で表される構造単位を有するポリマは、ポリ(ジアリルジメチルアンモニウム)クロライドの対アニオンCl-を[TFSI]-に変換することによって合成した。
得られたポリマ8質量部に対して、電解質塩としてLi[TFSI]を2質量部、溶融塩として[Py12][TFSI](関東化学株式会社製、融点:90℃)を10質量部、及び分散媒としてアセトンを24質量部加えて撹拌し、スラリA(電極合剤層形成用スラリ)を得た。スラリAの溶融塩の含有量は、ポリマ、電解質塩、及び溶融塩の合計量を基準として、50質量%であった。スラリAのポリマの含有量に対する分散媒の含有量の質量比は3であった。また、得られたポリマ8質量部に対して、電解質塩としてLi[TFSI]を2質量部、溶融塩として[Py12][TFSI]を10質量部、及び分散媒としてアセトンを16質量部加えて撹拌し、スラリB(電解質シート形成用スラリ)を得た。
スラリBをφ16mmのSUS板上に滴下し、40℃で2時間乾燥させ、アセトンを揮発させた。その後、60℃で1.0×104Pa以下(0.1気圧以下)の減圧下で10時間乾燥し、厚さ400μmの電解質シートを得た。
<正極の作製>
上記で作製した正極前駆体の正極活物質層に、スラリAをドクターブレード法にて、ギャップ200μmで塗布することによって加えた。その後、真空デシケータを用いて、0.05MPa減圧及び大気圧開放を10回繰り返すことによって、揮発成分を除去して正極合剤層を作製し、正極合剤層を備える正極を得た。
上記で作製した負極前駆体の負極活物質層に、スラリAをドクターブレード法にて、ギャップ200μmで塗布することによって加えた。その後、真空デシケータを用いて、0.05MPa減圧及び大気圧開放を10回繰り返すことによって、揮発成分を除去して負極合剤層を作製し、負極合剤層を備える負極を得た。
得られた正極の正極合剤層に、スラリBをドクターブレード法にて、ギャップ250μmで塗布した。真空デシケータを用いて、0.05MPa減圧及び大気圧開放を10回繰り返し、60℃、12時間真空乾燥することによって、正極合剤層上に、厚さ30μmの電解質層を有する正極を得た。同様にして、負極の負極合剤層上に、厚さ30μmの電解質層を有する負極を得た。
上記で作製した電解質層を有する正極及び負極を、コイン型電池を作製するため、φ15mmに打ち抜いた。電解質層同士が接するように、正極及び負極を重ねて、CR2032型のコインセル容器内に配置した。得られた積層体を、絶縁性のガスケットを介して電池容器上部をかしめて密閉することによって、実施例1の二次電池を得た。なお、電池作製はアルゴン雰囲気のグローブボックス内で行った。
実施例1で作製した正極について、走査型電子顕微鏡(SEM)を用いて、エネルギー分散型X線分析(EDX)によるコバルト及び硫黄の分布を分析した。分析結果を図7に示す。
上記の方法で作製した二次電池を用いて電池性能の評価を行った。充放電装置(東洋システム株式会社、商品名:TOSCAT-3200)を用いて、50℃、0.05Cで充放電測定を実施した。なお、Cは「電流値[A]/設計理論容量[Ah]」を意味し、1Cは電池を1時間で満充電又は満放電するための電流値を示す。結果を表1に示す。放電容量はその値が大きいほど電池特性に優れるといえる。
<二次電池の作製>
上記で作製した正極前駆体、電解質シート、及び負極前駆体を、正極活物質層と負極活物質層とが電解質シートに接するように、この順に重ねて、CR2032型のコインセル容器内に配置した。得られた積層体を、絶縁性のガスケットを介して電池容器上部をかしめて密閉することによって、比較例1の二次電池を得た。なお、電池作製はアルゴン雰囲気のグローブボックス内で行った。得られた二次電池について、実施例1と同様に、電池性能評価を行った。結果を表1に示す。
[二次電池用電極及び二次電池の作製]
<正極前駆体の作製>
Li(Co1/3Ni1/3Mn1/3)O2(正極活物質)66質量部、アセチレンブラック(導電剤、商品名:Li400、平均粒径48nm(製造元カタログ値)、電気化学工業株式会社)4質量部、ポリフッ化ビニリデン溶液(バインダ、商品名:クレハKFポリマ#1120、固形分:12質量%、株式会社クレハ)14質量部、及びN-メチル-2-ピロリドン(分散媒、NMP)15質量部を混合して正極活物質層形成用スラリを調製した。この正極活物質層形成用スラリを正極集電体(厚さ20μmのアルミニウム箔)上の主面に塗布し、120℃で乾燥後、圧延して、片面塗布量120g/m2、合剤密度2.7g/cm3の正極活物質層を形成し、正極前駆体を作製した。
黒鉛(負極活物質)52質量部、カーボンナノチューブ(導電剤、商品名:VGCF、繊維径150nm(製造元カタログ値)、昭和電工株式会社)0.4質量部、高純度黒鉛(導電剤、商品名:JSP、平均粒径7μm(製造元カタログ値)、日本黒鉛株式会社)1.4質量部、ポリフッ化ビニリデン溶液(バインダ、商品名:クレハKFポリマ#9130、固形分:13質量%、株式会社クレハ)21.8質量部、及びN-メチル-2-ピロリドン(分散媒、NMP)24.4質量部を混合して負極活物質層形成用スラリを調製した。この負極活物質層形成用スラリを負極集電体(厚さ10μmの銅箔)上の主面に塗布し、80℃で乾燥後圧延して、片面塗布量60g/m2、合剤密度1.6g/cm3の負極活物質層を形成し、負極前駆体を作製した。
Li[TFSI]の代わりにLi[FSI]を用いた以外は、上記ポリマ[P(DADMA)][TFSI]の合成と同様にして、[P(DADMA)][FSI]を合成した。
ポリマとして上述で合成した[P(DADMA)][TFSI]又は[P(DADMA)][FSI]、電解質塩としてのLi[FSI]、溶融塩として[Py13][FSI](関東化学株式会社製)又は[EMI][FSI](関東化学株式会社製)、及び分散媒としてアセトンを、表2に示す質量部で撹拌し、スラリC~G(電極合剤層形成用スラリ)を調製した。
Li[TFSI]を電解質塩として用い、イオン液体である[DEME][TFSI]に、電解質塩の濃度が1.5mol/Lとなるように溶解させて、Li[TFSI]のイオン液体溶液を調製した。得られたイオン液体溶液、SiO2粒子、バインダ(商品名:クレハKFポリマ#8500、株式会社クレハ)、及びNMPをそれぞれ43質量部、23質量部、34質量部、及び143質量部を混合して電解質シート形成用スラリを調製した。この電解質シート形成用スラリを支持フィルム上の主面に塗布し、80℃で乾燥して、厚さ20μmの電解質シートを作製した。二次電池の作製のため、得られた電解質シートを円型に打ち抜いた。
<正極及び負極の作製>
上記で作製した正極前駆体の正極活物質層及び負極前駆体の負極活物質層に、スラリCをドクターブレード法にて、ギャップ150μmで塗布することによって加えた。その後、60℃、12時間真空乾燥することによって、揮発成分(分散媒)を除去し、正極合剤層及び負極合剤層を作製して、正極合剤層を備える正極及び負極合剤層を備える負極を得た。二次電池の作製のため、得られた正極及び負極を円型に打ち抜いた。
円型に打ち抜かれた正極、電解質シート、及び負極をこの順に重ねて、CR2032型のコインセル容器内に配置した。得られた積層体を、絶縁性のガスケットを介して電池容器上部をかしめて密閉することによって、実施例2-1の二次電池を得た。
スラリCをスラリDに変更した以外は、実施例2-1と同様にして、実施例2-2の二次電池を得た。
スラリCをスラリEに変更した以外は、実施例2-1と同様にして、実施例2-3の二次電池を得た。
スラリCをスラリFに変更した以外は、実施例2-1と同様にして、実施例2-4の二次電池を得た。
スラリCをスラリGに変更した以外は、実施例2-1と同様にして、実施例2-5の二次電池を得た。
スラリCを正極前駆体の正極活物質層及び負極前駆体の負極活物質層に塗布しなかった以外は、実施例2-1と同様にして、比較例2-1の二次電池を得た。
上記の方法で作製した実施例2-1~2-5及び比較例2-1の二次電池を用いて電池性能の評価を行った。25℃での充放電容量を充放電装置(東洋システム株式会社、商品名:TOSCAT-3200)を用いて、以下の充放電条件下で測定した。結果を表3に示す。放電容量はその値が大きいほど電池特性に優れるといえる。
(1)終止電圧4.2V、0.05Cで定電流定電圧(CCCV)充電を行った後、0.05Cで終止電圧2.7Vまで定電流(CC)放電するサイクルを1サイクル行い、0.05Cの充電容量及び放電容量を求めた。なお、Cは「電流値[A]/設計理論容量[Ah]」を意味し、1Cは電池を1時間で満充電又は満放電するための電流値を示す。
(2)次いで、終止電圧4.2V、0.05Cで定電流定電圧(CCCV)充電を行った後、0.2Cで終止電圧2.7Vまで定電流(CC)放電するサイクルを1サイクル行い、0.2Cの放電容量を求めた。
(3)次いで、終止電圧4.2V、0.05Cで定電流定電圧(CCCV)充電を行った後、0.5Cで終止電圧2.7Vまで定電流(CC)放電するサイクルを1サイクル行い、0.5Cの放電容量を求めた。
[二次電池用電極及び二次電池の作製]
<正極前駆体の作製>
Li(Co1/3Ni1/3Mn1/3)O2(正極活物質)66質量部、アセチレンブラック(導電剤、商品名:Li400、平均粒径48nm(製造元カタログ値)、電気化学工業株式会社)4質量部、ポリフッ化ビニリデン溶液(バインダ、商品名:クレハKFポリマ#1120、固形分:12質量%、株式会社クレハ)14質量部、及びN-メチル-2-ピロリドン(分散媒、NMP)15質量部を混合して正極活物質層形成用スラリを調製した。この正極活物質層形成用スラリを正極集電体(厚さ20μmのアルミニウム箔)上の主面に塗布し、120℃で乾燥後、圧延して、片面塗布量120g/m2、合剤密度2.7g/cm3の正極活物質層を形成し、正極前駆体を作製した。その後、ラミネート型セル作製のために電極を加工した。
黒鉛(負極活物質)52質量部、カーボンナノチューブ(導電剤、商品名:VGCF、繊維径150nm(製造元カタログ値)、昭和電工株式会社)0.4質量部、高純度黒鉛(導電剤、商品名:JSP、平均粒径7μm(製造元カタログ値)、日本黒鉛株式会社)1.4質量部、ポリフッ化ビニリデン溶液(バインダ、商品名:クレハKFポリマ#9130、固形分:13質量%、株式会社クレハ)21.8質量部、及びN-メチル-2-ピロリドン(分散媒、NMP)24.4質量部を混合して負極活物質層形成用スラリを調製した。この負極活物質層形成用スラリを負極集電体(厚さ10μmの銅箔)上の主面に塗布し、80℃で乾燥後圧延して、片面塗布量60g/m2、合剤密度1.6g/cm3の負極活物質層を形成し、負極前駆体を作製した。その後、ラミネート型セル作製のために電極を加工した。
ポリマとして上述で合成した[P(DADMA)][TFSI]、電解質塩としてのLi[FSI]、溶融塩として[EMI][FSI](関東化学株式会社製)、及び分散媒としてアセトンを、表4に示す質量部で撹拌し、スラリH~K(電極合剤層形成用スラリ)を調製した。
Li[FSI]を電解質塩として用い、イオン液体である[Py13][FSI]に、電解質塩の濃度が1.5mol/Lとなるように溶解させて、Li[FSI]のイオン液体溶液を調製した。得られたイオン液体溶液、SiO2粒子、バインダ(商品名:クレハKFポリマ#8500、株式会社クレハ)、及びNMPをそれぞれ43質量部、23質量部、34質量部、及び143質量部を混合して電解質シート形成用スラリを調製した。この電解質シート形成用スラリを支持フィルム上の主面に塗布し、80℃で乾燥して、厚さ20μmの電解質シートを作製した。
<正極及び負極の作製>
上記で作製した正極前駆体の正極活物質層及び負極前駆体の負極活物質層に、スラリHをドクターブレード法にて、ギャップ150μmで塗布することによって加えた。その後、60℃、12時間真空乾燥することによって揮発成分(分散媒)を除去し、正極合剤層及び負極合剤層を作製して、正極合剤層を備える正極及び負極合剤層を備える負極を得た。
正極、電解質シート、及び負極をこの順に重ねて、ラミネート型セルを作製し、実施例3-1の二次電池を得た。
スラリHをスラリIに変更した以外は、実施例3-1と同様にして、実施例3-2の二次電池を得た。
スラリHをスラリJに変更した以外は、実施例3-1と同様にして、実施例3-3の二次電池を得た。
スラリHをスラリKに変更した以外は、実施例3-1と同様にして、実施例3-4の二次電池を得た。
上記の方法で作製した実施例3-1~3-4の二次電池を用いて電池性能の評価を行った。25℃での充放電容量を充放電装置(東洋システム株式会社、商品名:TOSCAT-3200)を用いて、5℃、0.05Cで充放電測定を行った。放電容量は、終止電圧4.2V、0.05Cで定電流定電圧(CCCV)充電を行った後、0.05Cで終止電圧2.7Vまで定電流(CC)放電するサイクルを1サイクル行うことによって求めた。なお、Cとは「電流値(A)/電池容量(Ah)」を意味する。結果を表5に示す。放電容量はその値が大きいほど電池特性に優れるといえる。
実施例3-1~3-4で作製した正極について、走査型電子顕微鏡(SEM)を用いて、二次電池の断面を分析した。分析結果を図9及び図10に示す。
Claims (21)
- 前記電解質塩のアニオンが、PF6 -、BF4 -、N(FSO2)2 -、N(CF3SO2)2 -、B(C2O4)2 -、及びClO4 -からなる群より選ばれる少なくとも1種である、請求項1に記載の電気化学デバイス用電極。
- 前記電解質塩がリチウム塩である、請求項1又は2に記載の電気化学デバイス用電極。
- 前記溶融塩の含有量が、ポリマ、電解質塩、及び溶融塩の合計量を基準として、10~80質量%である、請求項1~3のいずれか一項に記載の電気化学デバイス用電極。
- 前記電気化学デバイス用電極が正極であり、
前記電極集電体が正極集電体であり、前記電極合剤層が正極合剤層であり、前記電極活物質が正極活物質である、請求項1~4のいずれか一項に記載の電気化学デバイス用電極。 - 前記電気化学デバイス用電極が負極であり、
前記電極集電体が負極集電体であり、前記電極合剤層が負極合剤層であり、前記電極活物質が負極活物質である、請求項1~4のいずれか一項に記載の電気化学デバイス用電極。 - 前記負極活物質が黒鉛を含む、請求項6に記載の電気化学デバイス用電極。
- 前記電解質塩がLiN(FSO2)2を含む、請求項7に記載の電気化学デバイス用電極。
- 請求項1~8のいずれか一項に記載の電気化学デバイス用電極を備える、電気化学デバイス。
- 前記電解質塩のアニオンが、PF6 -、BF4 -、N(FSO2)2 -、N(CF3SO2)2 -、B(C2O4)2 -、及びClO4 -からなる群より選ばれる少なくとも1種である、請求項10に記載の電気化学デバイス用電極の製造方法。
- 前記溶融塩の含有量が、ポリマ、電解質塩、及び溶融塩の合計量を基準として、10~80質量%である、請求項10又は11に記載の電気化学デバイス用電極の製造方法。
- 前記分散媒がアセトンを含む、請求項10~12のいずれか一項に記載の電気化学デバイス用電極の製造方法。
- 前記ポリマの含有量に対する前記分散媒の含有量の質量比が6以下である、請求項10~13のいずれか一項に記載の電気化学デバイス用電極の製造方法。
- 前記電解質塩のアニオンが、PF6 -、BF4 -、N(FSO2)2 -、N(CF3SO2)2 -、B(C2O4)2 -、及びClO4 -からなる群より選ばれる少なくとも1種である、請求項15に記載のポリマ電解質組成物。
- 前記電解質塩がリチウム塩である、請求項15又は16に記載のポリマ電解質組成物。
- 前記溶融塩の含有量が、ポリマ、電解質塩、及び溶融塩の合計量を基準として、10~80質量%である、請求項15~17のいずれか一項に記載のポリマ電解質組成物。
- 分散媒をさらに含有する、請求項15~18のいずれか一項に記載のポリマ電解質組成物。
- 前記分散媒がアセトンを含む、請求項19に記載のポリマ電解質組成物。
- 前記ポリマの含有量に対する前記分散媒の含有量の質量比が6以下である、請求項19又は20に記載のポリマ電解質組成物。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/606,334 US11462767B2 (en) | 2017-04-21 | 2018-04-20 | Electrochemical device electrode. method for producing electrochemical device electrode and electrochemical device |
CN202310599693.XA CN116404107A (zh) | 2017-04-21 | 2018-04-20 | 电化学装置用电极及电化学装置 |
KR1020197029920A KR102595311B1 (ko) | 2017-04-21 | 2018-04-20 | 전기 화학 디바이스용 전극 및 그의 제조 방법, 전기 화학 디바이스, 그리고 폴리머 전해질 조성물 |
JP2019513702A JP7163909B2 (ja) | 2017-04-21 | 2018-04-20 | 電気化学デバイス用電極の製造方法 |
EP18787019.1A EP3614469A4 (en) | 2017-04-21 | 2018-04-20 | ELECTRODE OF ELECTROCHEMICAL DEVICE AND MANUFACTURING METHOD FOR IT, ELECTROCHEMICAL DEVICE, AND POLYMER ELECTROLYTE COMPOSITION |
CN201880026140.2A CN110537274B (zh) | 2017-04-21 | 2018-04-20 | 电极及其制造方法、电化学装置和聚合物电解质组合物 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2017/016079 WO2018193627A1 (ja) | 2017-04-21 | 2017-04-21 | ポリマ電解質組成物及びポリマ二次電池 |
PCT/JP2017/016084 WO2018193630A1 (ja) | 2017-04-21 | 2017-04-21 | 電気化学デバイス用電極及び電気化学デバイス |
JPPCT/JP2017/016084 | 2017-04-21 | ||
JPPCT/JP2017/016079 | 2017-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018194159A1 true WO2018194159A1 (ja) | 2018-10-25 |
Family
ID=63855968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2018/016318 WO2018194159A1 (ja) | 2017-04-21 | 2018-04-20 | 電気化学デバイス用電極及びその製造方法、電気化学デバイス、並びにポリマ電解質組成物 |
Country Status (7)
Country | Link |
---|---|
US (1) | US11462767B2 (ja) |
EP (1) | EP3614469A4 (ja) |
JP (1) | JP7163909B2 (ja) |
KR (1) | KR102595311B1 (ja) |
CN (2) | CN110537274B (ja) |
TW (1) | TWI794224B (ja) |
WO (1) | WO2018194159A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019198723A1 (ja) * | 2018-04-11 | 2019-10-17 | 日立化成株式会社 | 二次電池用電池部材の製造方法 |
WO2019198715A1 (ja) * | 2018-04-11 | 2019-10-17 | 日立化成株式会社 | 二次電池用電池部材の製造方法 |
JPWO2021033424A1 (ja) * | 2019-08-22 | 2021-02-25 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018193630A1 (ja) | 2017-04-21 | 2018-10-25 | 日立化成株式会社 | 電気化学デバイス用電極及び電気化学デバイス |
EP3614481A4 (en) * | 2017-04-21 | 2020-11-25 | Hitachi Chemical Company, Ltd. | POLYMER ELECTROLYTE COMPOSITION AND POLYMER SECONDARY BATTERY |
KR102595311B1 (ko) | 2017-04-21 | 2023-10-26 | 주식회사 엘지에너지솔루션 | 전기 화학 디바이스용 전극 및 그의 제조 방법, 전기 화학 디바이스, 그리고 폴리머 전해질 조성물 |
KR20210155878A (ko) * | 2020-06-17 | 2021-12-24 | 현대자동차주식회사 | 리튬공기전지의 양극재료 및 이를 이용한 양극 제조방법 |
JP2024532863A (ja) * | 2021-08-20 | 2024-09-10 | ディーキン ユニバーシティ | 固体電極用イオン結合剤 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003077539A (ja) * | 2001-09-04 | 2003-03-14 | Mitsubishi Materials Corp | ゲル状ポリマー電解質及びそれを用いたリチウムポリマー電池 |
JP2006032237A (ja) * | 2004-07-20 | 2006-02-02 | Dai Ichi Kogyo Seiyaku Co Ltd | イオンポリマーゲル電解質およびその前駆体組成物 |
JP2006049158A (ja) * | 2004-08-06 | 2006-02-16 | Trekion Co Ltd | リチウム・ポリマー電池およびその製造方法 |
JP2011171185A (ja) * | 2010-02-19 | 2011-09-01 | Nissan Motor Co Ltd | 二次電池用集電体 |
JP2013191547A (ja) | 2012-02-14 | 2013-09-26 | Nippon Shokubai Co Ltd | 正極合材組成物 |
Family Cites Families (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4005660B2 (ja) | 1997-03-28 | 2007-11-07 | Tdk株式会社 | 高分子固体電解質の製造方法、高分子固体電解質およびこれを用いた電気化学デバイス |
JPH11162513A (ja) | 1997-11-27 | 1999-06-18 | Daikin Ind Ltd | ポリマー電解質及びこれを用いたリチウム二次電池 |
WO1999040025A1 (fr) * | 1998-02-03 | 1999-08-12 | Acep Inc. | Nouveaux materiaux utiles en tant que solutes electrolytiques |
KR20000019372A (ko) | 1998-09-10 | 2000-04-06 | 박호군 | 균질상의 고체고분자합금 전해질 및 그 제조방법과, 그 전해질을 이용한 복합전극, 리튬고분자전지, 리튬이온고분자전지 및그 제조방법 |
JP4081895B2 (ja) | 1998-11-26 | 2008-04-30 | ソニー株式会社 | リチウムイオン二次電池用のゲル状電解質及びゲル状電解質リチウムイオン二次電池 |
US7732099B2 (en) * | 2003-03-31 | 2010-06-08 | Trekion Co., Ltd. | Composite polymer electrolyte composition |
JP3769291B2 (ja) | 2004-03-31 | 2006-04-19 | 株式会社東芝 | 非水電解質電池 |
JP5214088B2 (ja) | 2004-10-22 | 2013-06-19 | 株式会社Gsユアサ | 非水電解質電池 |
JP4496366B2 (ja) | 2005-04-07 | 2010-07-07 | 国立大学法人三重大学 | 高分子固体電解質リチウム2次電池用負極材及びその製造方法 |
JP4774941B2 (ja) | 2005-11-14 | 2011-09-21 | ソニー株式会社 | ゲル電解質およびゲル電解質電池 |
JP2008053135A (ja) | 2006-08-28 | 2008-03-06 | Sumitomo Electric Ind Ltd | 薄膜電池 |
JP5577565B2 (ja) * | 2006-09-19 | 2014-08-27 | ソニー株式会社 | リチウムイオン二次電池 |
JP4363436B2 (ja) | 2006-10-13 | 2009-11-11 | ソニー株式会社 | 二次電池 |
US8178009B2 (en) | 2006-11-07 | 2012-05-15 | Sumitomo Bakelite Co., Ltd. | Slurry for secondary battery electrode, electrode for secondary battery, process for production of electrode for secondary battery, and secondary battery |
JP5036284B2 (ja) * | 2006-11-22 | 2012-09-26 | 日本碍子株式会社 | セラミックス構造体の製造方法 |
JP2008243736A (ja) | 2007-03-28 | 2008-10-09 | Arisawa Mfg Co Ltd | リチウムイオン二次電池およびその製造方法 |
EP2362468A1 (en) | 2008-11-28 | 2011-08-31 | Sumitomo Chemical Company, Limited | Electrode film, electrode, method for manufacturing the electrode, and electrical storage device |
FR2942235B1 (fr) | 2009-02-13 | 2011-07-22 | Centre Nat Rech Scient | Gels conducteurs ioniques, leur procede de preparation et leur utilisation comme electrolyte |
JP5688527B2 (ja) * | 2009-03-30 | 2015-03-25 | パイオトレック株式会社 | フッ素系重合体の製法 |
JP5391940B2 (ja) | 2009-09-04 | 2014-01-15 | コニカミノルタ株式会社 | 固体電解質、その製造方法および二次電池 |
JP2011070793A (ja) | 2009-09-24 | 2011-04-07 | Konica Minolta Holdings Inc | 二次電池用電解質組成物および二次電池 |
WO2011037060A1 (ja) | 2009-09-24 | 2011-03-31 | コニカミノルタホールディングス株式会社 | 電解質組成物、及びリチウムイオン二次電池 |
JP5381636B2 (ja) | 2009-11-18 | 2014-01-08 | コニカミノルタ株式会社 | 電池用固体電解質およびリチウムイオン二次電池 |
JP2011129400A (ja) | 2009-12-18 | 2011-06-30 | Konica Minolta Holdings Inc | イオン液体を有する二次電池およびその製造方法 |
KR20120136355A (ko) | 2010-02-05 | 2012-12-18 | 다이킨 고교 가부시키가이샤 | 이차 전지용 겔 전해질 복합 필름 및 이차 전지 |
CN103329335A (zh) | 2010-12-08 | 2013-09-25 | 丰田自动车株式会社 | 电极体的制造方法 |
JP2013019154A (ja) | 2011-07-11 | 2013-01-31 | Miwa Lock Co Ltd | 携帯型鍵 |
US20130106029A1 (en) | 2011-10-27 | 2013-05-02 | Infinite Power Solutions, Inc. | Fabrication of High Energy Density Battery |
CN102522589A (zh) | 2011-12-16 | 2012-06-27 | 浙江大东南集团有限公司 | 一种新型具有互穿网络结构凝胶聚合物电解质及其制备方法和应用 |
JP6150424B2 (ja) * | 2012-03-08 | 2017-06-21 | 国立大学法人名古屋大学 | イオン伝導性固体電解質およびそれを用いたイオン二次電池 |
JP6283795B2 (ja) | 2012-06-22 | 2018-02-28 | 国立大学法人東北大学 | キャパシタ用電解質およびキャパシタ |
JP6532186B2 (ja) * | 2013-05-23 | 2019-06-19 | 株式会社日本触媒 | 電極前駆体、電極、及び、二次電池 |
JP2015011823A (ja) | 2013-06-27 | 2015-01-19 | 住友電気工業株式会社 | リチウム電池 |
KR102155696B1 (ko) | 2013-09-13 | 2020-09-15 | 삼성전자주식회사 | 복합막, 그 제조방법 및 이를 포함한 리튬 공기 전지 |
JP2015090777A (ja) | 2013-11-05 | 2015-05-11 | ソニー株式会社 | 電池、電解質、電池パック、電子機器、電動車両、蓄電装置および電力システム |
KR20150063269A (ko) * | 2013-11-29 | 2015-06-09 | 삼성전자주식회사 | 리튬 공기 전지용 복합전극, 그 제조방법 및 이를 포함한 리튬 공기 전지 |
KR102123719B1 (ko) | 2013-12-27 | 2020-06-16 | 가부시키가이샤 무라타 세이사쿠쇼 | 전지, 전해질, 전지 팩, 전자 기기, 전동 차량, 축전 장치 및 전력 시스템 |
KR102386841B1 (ko) * | 2014-12-19 | 2022-04-14 | 삼성전자주식회사 | 복합전해질 및 이를 포함하는 리튬전지 |
US10186730B2 (en) | 2015-07-15 | 2019-01-22 | Samsung Electronics Co., Ltd. | Electrolyte solution for secondary battery and secondary battery |
CN107431242B (zh) | 2015-09-16 | 2021-03-23 | 松下知识产权经营株式会社 | 电池 |
WO2017094396A1 (ja) | 2015-12-04 | 2017-06-08 | ソニー株式会社 | 二次電池、電池パック、電動車両、電力貯蔵システム、電動工具および電子機器 |
KR102626915B1 (ko) | 2016-08-02 | 2024-01-18 | 삼성전자주식회사 | 복합막, 그 제조방법 및 이를 포함하는 리튬공기전지 |
EP3614481A4 (en) * | 2017-04-21 | 2020-11-25 | Hitachi Chemical Company, Ltd. | POLYMER ELECTROLYTE COMPOSITION AND POLYMER SECONDARY BATTERY |
KR102595311B1 (ko) | 2017-04-21 | 2023-10-26 | 주식회사 엘지에너지솔루션 | 전기 화학 디바이스용 전극 및 그의 제조 방법, 전기 화학 디바이스, 그리고 폴리머 전해질 조성물 |
WO2018193630A1 (ja) * | 2017-04-21 | 2018-10-25 | 日立化成株式会社 | 電気化学デバイス用電極及び電気化学デバイス |
-
2018
- 2018-04-20 KR KR1020197029920A patent/KR102595311B1/ko active IP Right Grant
- 2018-04-20 US US16/606,334 patent/US11462767B2/en active Active
- 2018-04-20 EP EP18787019.1A patent/EP3614469A4/en not_active Withdrawn
- 2018-04-20 CN CN201880026140.2A patent/CN110537274B/zh active Active
- 2018-04-20 CN CN202310599693.XA patent/CN116404107A/zh active Pending
- 2018-04-20 JP JP2019513702A patent/JP7163909B2/ja active Active
- 2018-04-20 TW TW107113583A patent/TWI794224B/zh active
- 2018-04-20 WO PCT/JP2018/016318 patent/WO2018194159A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003077539A (ja) * | 2001-09-04 | 2003-03-14 | Mitsubishi Materials Corp | ゲル状ポリマー電解質及びそれを用いたリチウムポリマー電池 |
JP2006032237A (ja) * | 2004-07-20 | 2006-02-02 | Dai Ichi Kogyo Seiyaku Co Ltd | イオンポリマーゲル電解質およびその前駆体組成物 |
JP2006049158A (ja) * | 2004-08-06 | 2006-02-16 | Trekion Co Ltd | リチウム・ポリマー電池およびその製造方法 |
JP2011171185A (ja) * | 2010-02-19 | 2011-09-01 | Nissan Motor Co Ltd | 二次電池用集電体 |
JP2013191547A (ja) | 2012-02-14 | 2013-09-26 | Nippon Shokubai Co Ltd | 正極合材組成物 |
Non-Patent Citations (3)
Title |
---|
ANNE-LAURE PONT ET AL.: "Pyrrolidinium-based polymeric ionic liquids as mechanically andelectrochemically stable polymer electrolytes", JOURNAL OF POWER SOURCES, vol. 188, no. 2, 2009, pages 558 - 563, XP055559917, Retrieved from the Internet <URL:DOI:10.1016/j.jpowsour.2008.11.115> * |
G.B . APPETECCHI ET AL.: "Ternary polymer electrolytes containing pyrrolidinium-based polymeric ionicliquids for lithium batteries", JOURNAL OF POWER SOURCES, vol. 195, no. 11, 1 June 2010 (2010-06-01), pages 3668 - 3675, XP055559907, Retrieved from the Internet <URL:DOI:10.1016/j.jpowsour.2009.11.146> * |
JOURNAL OF POWER SOURCES, vol. 188, 2009, pages 558 - 563 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019198723A1 (ja) * | 2018-04-11 | 2019-10-17 | 日立化成株式会社 | 二次電池用電池部材の製造方法 |
WO2019198715A1 (ja) * | 2018-04-11 | 2019-10-17 | 日立化成株式会社 | 二次電池用電池部材の製造方法 |
JPWO2021033424A1 (ja) * | 2019-08-22 | 2021-02-25 |
Also Published As
Publication number | Publication date |
---|---|
CN110537274B (zh) | 2023-06-13 |
KR20190139221A (ko) | 2019-12-17 |
KR102595311B1 (ko) | 2023-10-26 |
EP3614469A1 (en) | 2020-02-26 |
TW201843206A (zh) | 2018-12-16 |
EP3614469A4 (en) | 2021-01-13 |
CN116404107A (zh) | 2023-07-07 |
US11462767B2 (en) | 2022-10-04 |
US20200136181A1 (en) | 2020-04-30 |
TWI794224B (zh) | 2023-03-01 |
JP7163909B2 (ja) | 2022-11-01 |
CN110537274A (zh) | 2019-12-03 |
JPWO2018194159A1 (ja) | 2020-02-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2018194159A1 (ja) | 電気化学デバイス用電極及びその製造方法、電気化学デバイス、並びにポリマ電解質組成物 | |
JP4519685B2 (ja) | 非水電解質電池 | |
WO2018193630A1 (ja) | 電気化学デバイス用電極及び電気化学デバイス | |
WO2019163895A1 (ja) | 負極活物質のプレドープ方法、負極の製造方法、及び蓄電デバイスの製造方法 | |
WO2018193628A1 (ja) | ポリマ電解質組成物及びポリマ二次電池 | |
WO2020145338A1 (ja) | 電解液、電解質スラリ組成物及び二次電池 | |
WO2018193627A1 (ja) | ポリマ電解質組成物及びポリマ二次電池 | |
JPWO2019035190A1 (ja) | 二次電池用電池部材及び二次電池 | |
JP2019129119A (ja) | イオン伝導性セパレータ及び電気化学デバイス | |
CN111742428A (zh) | 负极活性物质的预掺杂方法、负极的制造方法、以及蓄电装置的制造方法 | |
JPWO2019208110A1 (ja) | 電解質スラリー組成物、電解質シートの製造方法、及び二次電池の製造方法 | |
WO2018198168A1 (ja) | 二次電池用電池部材、並びに、二次電池及びその製造方法 | |
JPWO2018221668A1 (ja) | 電解質組成物及び二次電池 | |
TWI784154B (zh) | 二次電池用電極、二次電池用電解質層及二次電池 | |
Nanda et al. | High-capacity electrode materials for electrochemical energy storage: Role of nanoscale effects | |
WO2020017439A1 (ja) | 電解質シートの製造方法及び二次電池の製造方法 | |
JP6981071B2 (ja) | ポリマ電解質組成物及びポリマ二次電池 | |
WO2018193631A1 (ja) | ポリマ電解質組成物及びポリマ二次電池 | |
JP2019021539A (ja) | ポリマ電解質組成物及びポリマ二次電池 | |
JP2020113527A (ja) | 電解質スラリ組成物及びその製造方法、並びに、電解質シート及びその製造方法 | |
JP2023117209A (ja) | 固体電解質電池用負極及び固体電解質電池 | |
JP2021150065A (ja) | 活物質層、電極及びリチウムイオン二次電池 | |
JP2021153010A (ja) | リチウム二次電池 | |
JP2020202020A (ja) | 固体電解質電池用添加剤、組成物、二次電池用電極及びその製造方法、二次電池用電池部材、並びに二次電池 | |
JP2021018925A (ja) | 非水電解液、並びにそれを用いた半固体電解質シート及び半固体電解質複合シート |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18787019 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2019513702 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20197029920 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2018787019 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2018787019 Country of ref document: EP Effective date: 20191121 |