JP7398128B2 - 高耐久リチウム二次電池 - Google Patents
高耐久リチウム二次電池 Download PDFInfo
- Publication number
- JP7398128B2 JP7398128B2 JP2021178583A JP2021178583A JP7398128B2 JP 7398128 B2 JP7398128 B2 JP 7398128B2 JP 2021178583 A JP2021178583 A JP 2021178583A JP 2021178583 A JP2021178583 A JP 2021178583A JP 7398128 B2 JP7398128 B2 JP 7398128B2
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- secondary battery
- weight
- lithium secondary
- formula
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910052744 lithium Inorganic materials 0.000 title claims description 79
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 77
- 239000003792 electrolyte Substances 0.000 claims description 43
- 150000003839 salts Chemical class 0.000 claims description 41
- -1 fluorosulfonyl Chemical group 0.000 claims description 31
- 150000001450 anions Chemical class 0.000 claims description 28
- 229910003002 lithium salt Inorganic materials 0.000 claims description 26
- 159000000002 lithium salts Chemical class 0.000 claims description 26
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 20
- 125000000217 alkyl group Chemical group 0.000 claims description 16
- 125000004432 carbon atom Chemical group C* 0.000 claims description 16
- 150000001768 cations Chemical class 0.000 claims description 16
- 229920001721 polyimide Polymers 0.000 claims description 16
- 229920001577 copolymer Polymers 0.000 claims description 15
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 15
- 239000009719 polyimide resin Substances 0.000 claims description 15
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000002952 polymeric resin Substances 0.000 claims description 11
- 229920003002 synthetic resin Polymers 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229940006487 lithium cation Drugs 0.000 claims description 7
- 239000000178 monomer Substances 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 125000001153 fluoro group Chemical group F* 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 claims description 4
- 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 claims description 3
- 150000003949 imides Chemical class 0.000 claims description 3
- KTQDYGVEEFGIIL-UHFFFAOYSA-N n-fluorosulfonylsulfamoyl fluoride Chemical compound FS(=O)(=O)NS(F)(=O)=O KTQDYGVEEFGIIL-UHFFFAOYSA-N 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 description 35
- 239000000203 mixture Substances 0.000 description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 24
- 230000000052 comparative effect Effects 0.000 description 20
- 239000011230 binding agent Substances 0.000 description 19
- 239000007773 negative electrode material Substances 0.000 description 18
- 239000007774 positive electrode material Substances 0.000 description 18
- 238000007599 discharging Methods 0.000 description 17
- 239000002608 ionic liquid Substances 0.000 description 16
- 229910001416 lithium ion Inorganic materials 0.000 description 13
- 229910002804 graphite Inorganic materials 0.000 description 12
- 239000010439 graphite Substances 0.000 description 12
- VDVLPSWVDYJFRW-UHFFFAOYSA-N lithium;bis(fluorosulfonyl)azanide Chemical compound [Li+].FS(=O)(=O)[N-]S(F)(=O)=O VDVLPSWVDYJFRW-UHFFFAOYSA-N 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 239000007772 electrode material Substances 0.000 description 10
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- 150000008064 anhydrides Chemical class 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000014759 maintenance of location Effects 0.000 description 9
- ANFWGAAJBJPAHX-UHFFFAOYSA-N bis(fluorosulfonyl)azanide;1-ethyl-3-methylimidazol-3-ium Chemical compound CC[N+]=1C=CN(C)C=1.FS(=O)(=O)[N-]S(F)(=O)=O ANFWGAAJBJPAHX-UHFFFAOYSA-N 0.000 description 8
- 239000002482 conductive additive Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- 239000002033 PVDF binder Substances 0.000 description 7
- 150000004985 diamines Chemical class 0.000 description 7
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 239000003575 carbonaceous material Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 229920000098 polyolefin Polymers 0.000 description 6
- HCBRSIIGBBDDCD-UHFFFAOYSA-N 1,1,2,2-tetrafluoro-3-(1,1,2,2-tetrafluoroethoxy)propane Chemical compound FC(F)C(F)(F)COC(F)(F)C(F)F HCBRSIIGBBDDCD-UHFFFAOYSA-N 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- RAXXELZNTBOGNW-UHFFFAOYSA-O Imidazolium Chemical compound C1=C[NH+]=CN1 RAXXELZNTBOGNW-UHFFFAOYSA-O 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910003481 amorphous carbon Inorganic materials 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 239000011255 nonaqueous electrolyte Substances 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- 239000005062 Polybutadiene Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 229910021383 artificial graphite Inorganic materials 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- RXKLBLXXQQRGJH-UHFFFAOYSA-N bis(fluorosulfonyl)azanide 1-methyl-1-propylpyrrolidin-1-ium Chemical compound CCC[N+]1(C)CCCC1.FS(=O)(=O)[N-]S(F)(=O)=O RXKLBLXXQQRGJH-UHFFFAOYSA-N 0.000 description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 description 4
- 239000002041 carbon nanotube Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 229920003049 isoprene rubber Polymers 0.000 description 4
- 239000005001 laminate film Substances 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910021382 natural graphite Inorganic materials 0.000 description 4
- 229920001084 poly(chloroprene) Polymers 0.000 description 4
- 229920002857 polybutadiene Polymers 0.000 description 4
- 229920002620 polyvinyl fluoride Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HLBLWEWZXPIGSM-UHFFFAOYSA-N 4-Aminophenyl ether Chemical compound C1=CC(N)=CC=C1OC1=CC=C(N)C=C1 HLBLWEWZXPIGSM-UHFFFAOYSA-N 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 229910013100 LiNix Inorganic materials 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 235000019241 carbon black Nutrition 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 150000007519 polyprotic acids Polymers 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 2
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical class C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229920002907 Guar gum Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 2
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 2
- 239000002134 carbon nanofiber Substances 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 210000001787 dendrite Anatomy 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000003411 electrode reaction Methods 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229910003472 fullerene Inorganic materials 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- ANSXAPJVJOKRDJ-UHFFFAOYSA-N furo[3,4-f][2]benzofuran-1,3,5,7-tetrone Chemical compound C1=C2C(=O)OC(=O)C2=CC2=C1C(=O)OC2=O ANSXAPJVJOKRDJ-UHFFFAOYSA-N 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 239000000665 guar gum Substances 0.000 description 2
- 235000010417 guar gum Nutrition 0.000 description 2
- 229960002154 guar gum Drugs 0.000 description 2
- 239000003273 ketjen black Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910052976 metal sulfide Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- RNVCVTLRINQCPJ-UHFFFAOYSA-N o-toluidine Chemical compound CC1=CC=CC=C1N RNVCVTLRINQCPJ-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920001277 pectin Polymers 0.000 description 2
- 239000001814 pectin Substances 0.000 description 2
- 235000010987 pectin Nutrition 0.000 description 2
- 229960000292 pectin Drugs 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920001197 polyacetylene Polymers 0.000 description 2
- 229920000767 polyaniline Polymers 0.000 description 2
- 238000012643 polycondensation polymerization Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920000128 polypyrrole Polymers 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- 229920000123 polythiophene Polymers 0.000 description 2
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910052596 spinel Inorganic materials 0.000 description 2
- 239000011029 spinel Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 150000004763 sulfides Chemical class 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 150000000000 tetracarboxylic acids Chemical class 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 239000000230 xanthan gum Substances 0.000 description 2
- 229920001285 xanthan gum Polymers 0.000 description 2
- 235000010493 xanthan gum Nutrition 0.000 description 2
- 229940082509 xanthan gum Drugs 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 1
- DDHUNHGZUHZNKB-UHFFFAOYSA-N 2,2-dimethylpropane-1,3-diamine Chemical compound NCC(C)(C)CN DDHUNHGZUHZNKB-UHFFFAOYSA-N 0.000 description 1
- ZVDSMYGTJDFNHN-UHFFFAOYSA-N 2,4,6-trimethylbenzene-1,3-diamine Chemical compound CC1=CC(C)=C(N)C(C)=C1N ZVDSMYGTJDFNHN-UHFFFAOYSA-N 0.000 description 1
- HQCHAOKWWKLXQH-UHFFFAOYSA-N 2,6-Dichloro-para-phenylenediamine Chemical compound NC1=CC(Cl)=C(N)C(Cl)=C1 HQCHAOKWWKLXQH-UHFFFAOYSA-N 0.000 description 1
- AKCRQHGQIJBRMN-UHFFFAOYSA-N 2-chloroaniline Chemical compound NC1=CC=CC=C1Cl AKCRQHGQIJBRMN-UHFFFAOYSA-N 0.000 description 1
- ZBMISJGHVWNWTE-UHFFFAOYSA-N 3-(4-aminophenoxy)aniline Chemical compound C1=CC(N)=CC=C1OC1=CC=CC(N)=C1 ZBMISJGHVWNWTE-UHFFFAOYSA-N 0.000 description 1
- FGWQCROGAHMWSU-UHFFFAOYSA-N 3-[(4-aminophenyl)methyl]aniline Chemical compound C1=CC(N)=CC=C1CC1=CC=CC(N)=C1 FGWQCROGAHMWSU-UHFFFAOYSA-N 0.000 description 1
- AIVVXPSKEVWKMY-UHFFFAOYSA-N 4-(3,4-dicarboxyphenoxy)phthalic acid Chemical compound C1=C(C(O)=O)C(C(=O)O)=CC=C1OC1=CC=C(C(O)=O)C(C(O)=O)=C1 AIVVXPSKEVWKMY-UHFFFAOYSA-N 0.000 description 1
- LFBALUPVVFCEPA-UHFFFAOYSA-N 4-(3,4-dicarboxyphenyl)phthalic acid Chemical compound C1=C(C(O)=O)C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)C(C(O)=O)=C1 LFBALUPVVFCEPA-UHFFFAOYSA-N 0.000 description 1
- QYIMZXITLDTULQ-UHFFFAOYSA-N 4-(4-amino-2-methylphenyl)-3-methylaniline Chemical group CC1=CC(N)=CC=C1C1=CC=C(N)C=C1C QYIMZXITLDTULQ-UHFFFAOYSA-N 0.000 description 1
- KMKWGXGSGPYISJ-UHFFFAOYSA-N 4-[4-[2-[4-(4-aminophenoxy)phenyl]propan-2-yl]phenoxy]aniline Chemical compound C=1C=C(OC=2C=CC(N)=CC=2)C=CC=1C(C)(C)C(C=C1)=CC=C1OC1=CC=C(N)C=C1 KMKWGXGSGPYISJ-UHFFFAOYSA-N 0.000 description 1
- YCZUWQOJQGCZKG-UHFFFAOYSA-N 9h-carbazole-3,6-diamine Chemical compound C1=C(N)C=C2C3=CC(N)=CC=C3NC2=C1 YCZUWQOJQGCZKG-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910000873 Beta-alumina solid electrolyte Inorganic materials 0.000 description 1
- 229910019825 Cr0.25V0.75S2 Inorganic materials 0.000 description 1
- 229910019821 Cr0.5V0.5S2 Inorganic materials 0.000 description 1
- 229910014569 C—OOH Inorganic materials 0.000 description 1
- 229910016945 Fe0.25V0.75S2 Inorganic materials 0.000 description 1
- 229910010085 Li2MnO3-LiMO2 Inorganic materials 0.000 description 1
- 229910010099 Li2MnO3—LiMO2 Inorganic materials 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 1
- 229910013716 LiNi Inorganic materials 0.000 description 1
- 229910015872 LiNi0.8Co0.1Mn0.1O2 Inorganic materials 0.000 description 1
- 229910016000 MoS3VS2 Inorganic materials 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- FHKPLLOSJHHKNU-INIZCTEOSA-N [(3S)-3-[8-(1-ethyl-5-methylpyrazol-4-yl)-9-methylpurin-6-yl]oxypyrrolidin-1-yl]-(oxan-4-yl)methanone Chemical compound C(C)N1N=CC(=C1C)C=1N(C2=NC=NC(=C2N=1)O[C@@H]1CN(CC1)C(=O)C1CCOCC1)C FHKPLLOSJHHKNU-INIZCTEOSA-N 0.000 description 1
- LAZAPLSLBNDLDM-UHFFFAOYSA-N [Li].FC(F)F Chemical compound [Li].FC(F)F LAZAPLSLBNDLDM-UHFFFAOYSA-N 0.000 description 1
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- SOXUFMZTHZXOGC-UHFFFAOYSA-N [Li].[Mn].[Co].[Ni] Chemical compound [Li].[Mn].[Co].[Ni] SOXUFMZTHZXOGC-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- KSECJOPEZIAKMU-UHFFFAOYSA-N [S--].[S--].[S--].[S--].[S--].[V+5].[V+5] Chemical compound [S--].[S--].[S--].[S--].[S--].[V+5].[V+5] KSECJOPEZIAKMU-UHFFFAOYSA-N 0.000 description 1
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003660 carbonate based solvent Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 229910052798 chalcogen Inorganic materials 0.000 description 1
- 150000001787 chalcogens Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 229940100060 combination of electrolytes Drugs 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- VKIRRGRTJUUZHS-UHFFFAOYSA-N cyclohexane-1,4-diamine Chemical compound NC1CCC(N)CC1 VKIRRGRTJUUZHS-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011267 electrode slurry Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- RSNHXDVSISOZOB-UHFFFAOYSA-N lithium nickel Chemical compound [Li].[Ni] RSNHXDVSISOZOB-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000002683 reaction inhibitor Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- RCYJPSGNXVLIBO-UHFFFAOYSA-N sulfanylidenetitanium Chemical compound [S].[Ti] RCYJPSGNXVLIBO-UHFFFAOYSA-N 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- ZDCRNXMZSKCKRF-UHFFFAOYSA-N tert-butyl 4-(4-bromoanilino)piperidine-1-carboxylate Chemical compound C1CN(C(=O)OC(C)(C)C)CCC1NC1=CC=C(Br)C=C1 ZDCRNXMZSKCKRF-UHFFFAOYSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
-
- 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
-
- 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
- H01M10/0567—Liquid materials characterised by the additives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/417—Polyolefins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/423—Polyamide resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- H01M50/491—Porosity
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Cell Separators (AREA)
Description
一方、リチウム二次電池の特性の一つとしてサイクル寿命があるが、イオン液体を非水電解質二次電池の電解液に利用する従来技術の中には、二次電池のサイクル寿命の改善を試みたものがなかった。イオン液体を利用した二次電池には、充放電サイクルを繰り返すと、充電容量や放電容量がたちまち下落してしまうという問題があるが、このような課題に取り組む従来技術はない。
(式(1)中、R1およびR2は、同一または異なって、フッ素原子または炭素数1~4のフッ素化アルキル基から選択される。)
(式(2)中、R3およびR4は、同一または異なって、炭素数1~8のアルキル基から選択され、R5、R6およびR7は、同一または異なって、水素原子および炭素数1~4のアルキル基からなる群より選択され、但しR5、R6およびR7の少なくとも1つは水素原子である。)
(式(1)中、R1およびR2は、同一または異なって、フッ素原子または炭素数1~4のフッ素化アルキル基から選択される。)
(式(2)中、R3およびR4は、同一または異なって、炭素数1~8のアルキル基から選択され、R5、R6およびR7は、同一または異なって、水素原子および炭素数1~4のアルキル基からなる群より選択され、但しR5、R6およびR7の少なくとも1つは水素原子である。)
なお、実施形態の負極における負極活物質として、金属リチウムを用いることもできる。
(式(1)中、R1およびR2は、同一または異なって、フッ素原子または炭素数1~4のフッ素化アルキル基から選択される。)で表されるアニオンと、リチウムカチオンとのリチウム塩と、
下記式(1):
(式(1)中、R1およびR2は、同一または異なって、フッ素原子または炭素数1~4のフッ素化アルキル基から選択される。)
で表されるアニオンと、下記式(2):
(式(2)中、R3およびR4は、同一または異なって、炭素数1~8のアルキル基から選択され、R5、R6およびR7は、同一または異なって、水素原子および炭素数1~4のアルキル基からなる群より選択され、但しR5、R6およびR7の少なくとも1つは水素原子である。)で表されるカチオンとの有機塩と、を少なくとも含む。
<リチウム二次電池の作製>
正極活物質であるリチウム・ニッケル・マンガン・コバルト複合酸化物(LiNi0.8Co0.1Mn0.1O2、以下NMC811)98重量%、導電助剤としてカーボンナノチューブ1重量%、バインダとしてポリビニリデンフルオライド(PVDF)1重量%を混合した正極合剤を厚さ12μmのアルミニウム箔上に目付3.2mg/cm2で積層した正極を用意した。一方、厚さ10μmの銅箔上に金属リチウムを厚さ20μmになるように積層した負極を用意した。セパレータは、ベンゼン-1,2,4,5-テトラカルボン酸無水物(PMDA)と4,4’-ジアミノジフェニルエーテル(ODA)とを縮重合させて得たポリイミド樹脂(分子内にカルボニル基を含むモノマーを構成単位とするコポリマー、コポリマーに占めるカルボニル基由来の酸素の存在量は20.8重量%)から形成された3DOM構造を有する高分子樹脂基材膜(全体の厚さ20μm)を用いた。電解質として、1-エチル-3メチルイミダゾリウムビス(フルオロスルホニル)イミド(EMIFSI)(有機塩)にリチウムビス(フルオロスルホニル)イミド(LiFSI)を濃度34重量%(EMIFSIとLiFSIの総重量を基準とした値)となるように溶解させた混合溶液を用いた。なおこの段階で得られた電解質を目視により観察し、溶解性を評価した。ほぼ均一な電解質が得られたものを「良好」、不溶成分が見られるものを「不良」と評価した。
[初回充放電]
上記の通り作製したラミネート型セルの初回充放電を行った。初回充放電は、雰囲気温度25℃で、0.1C電流、上限電圧4.3V、0.03Cカットオフでの定電流定電圧(CC-CV)充電を行い、その後、2.8Vまで0.1C電流での定電流(CC)放電を行った。
上記のように初回充放電したラミネート型セルに、サイクル充放電を行った。サイクル条件は、温度25℃環境下で、充電:0.2C電流、上限電圧4.3V、0.03Cカットオフでの定電流定電圧(CC-CV)充電、放電:0.5C電流、下限電圧2.8Vでの定電流(CC)放電の充放電を1サイクルとして、100サイクル(100回)繰り返した。
初回充放電、および2サイクル目以降の充放電における充電容量、放電容量は、正極のNMC811の質量あたりの比容量として算出した。初回充放電後のセルの容量に対する100サイクルの充放電終了後のセルの容量の割合を算出し、セルの容量維持率とした。
実施例1において、EMIFSIとLiFSIの混合比を変更した混合溶液を調製し、実施例1と同様にラミネート型のセルを得た(実施例2~8)。実施例1と同様に、セルのサイクル特性を測定し、セルの容量維持率を算出した。
LiFSIの濃度を8重量%としたこと以外は実施例1と同様にセルを得た(比較例1)。また、実施例1において、LiFSIの濃度を46%としたこと以外は実施例1と同様にラミネート型のセルを得た(比較例2)。実施例1と同様に、セルのサイクル特性を測定し、セルの容量維持率を算出した。
また、電解質として、1-メチル-1-プロピルピロリジニウムビス(フルオロスルホニル)イミド(MPPYFSI)に、LiFSIを濃度36重量%となるように溶解させたイオン液体を用いたこと以外は実施例1と同様にラミネート型のセルを得た(比較例3)。実施例1と同様に、セルのサイクル特性を測定し、セルの容量維持率を算出した。
なお、MPPYFSIは、たとえばキシダ化学株式会社、東京化成工業株式会社等による市販品を適宜入手することができる。
実施例1において調製した、EMIFSIとLiFSIの混合溶液81重量%と、1,1,2,2-テトラフルオロエチル-2,2,3,3-テトラフルオロプロピルエーテル19重量%とを混合した液体を用いたこと以外は実施例1と同様にラミネート型のセルを作製した。実施例1と同様に、セルのサイクル特性を測定し、セルの容量維持率を算出した。
なお、1,1,2,2-テトラフルオロエチル-2,2,3,3-テトラフルオロプロピルエーテルは、たとえば富士フィルム和光純薬株式会社、東京化成工業株式会社等による市販品を適宜入手することができる。
実施例9において、EMIFSIとLiFSIの混合溶液72重量%と、1,1,2,2-テトラフルオロエチル-2,2,3,3-テトラフルオロプロピルエーテル28重量%とを混合した液体を用いたこと以外は実施例9と同様にラミネート型のセルを作製した。実施例9と同様に、セルのサイクル特性を測定し、セルの容量維持率を算出した。
実施例1において調製した、EMIFSIとLiFSIの混合溶液62重量%と、1,1,2,2-テトラフルオロエチル-2,2,3,3-テトラフルオロプロピルエーテル38重量%とを混合した液体を用いたこと以外は実施例9と同様にラミネート型のセルを作製した。実施例9と同様に、セルのサイクル特性を測定し、セルの容量維持率を算出した(比較例4)。
比較例3において調製した、MPPYFSIとLiFSIの混合溶液80重量%と、1,1,2,2-テトラフルオロエチル-2,2,3,3-テトラフルオロプロピルエーテル20重量%とを混合した液体を用いたこと以外は比較例3と同様にラミネート型のセルを作製した。比較例3と同様に、セルのサイクル特性を測定し、セルの容量維持率を算出した(比較例5)。
セパレータとして、厚さ16μmの二軸延伸ポリプロピレン(PP)に厚さ4μmのアルミナコーティングを施した膜を用いたこと以外は実施例1と同様にラミネート型のセルを作製した。実施例1と同様に、セルのサイクル特性を測定し、セルの容量維持率を算出した。
なお、二軸延伸ポリプロピレンセパレータは、たとえば旭化成株式会社、東レ株式会社等による市販品を、適宜入手することができる。
一方、比較例1のリチウム二次電池に用いた電解質は、リチウム塩の量がやや少ないものである。比較例1のリチウム二次電池は、サイクル充放電による電池容量の低下が早めに見られた。また比較例2のリチウム二次電池に用いた電解質は、リチウム塩の量がやや多く、不溶成分が観察されるものであった。比較例3のリチウム二次電池に用いた電解質の有機塩は、本発明の式(1)で表されるアニオンと、式(2)で表されるカチオンとの塩ではない。比較例3のリチウム二次電池は、充放電を良好に行うことができなかった。比較例4のリチウム二次電池に用いた電解質には、ハイドロフルオロエーテルが多く含まれており、これにより均一な電解質を得ることができなかった。比較例5のリチウム二次電池に用いた電解質の有機塩は、本発明の式(1)で表されるアニオンと、式(2)で表されるカチオンとの塩ではない。比較例5のリチウム二次電池はサイクル充放電により直ちに電池容量が低下した。比較例6のリチウム二次電池は、電解質がセパレータに適切に含浸せず、正常な充放電が難しかった。
Claims (4)
- 正極と、負極と、電解質と、セパレータとを少なくとも含むリチウム二次電池であって、
該電解質は、下記式(1)で表されるアニオンと、リチウムカチオンとのリチウム塩と、
下記式(1)で表されるアニオンと、下記式(2)で表されるカチオンとの有機塩と、
を少なくとも含み、
該電解質全体の重量に対する該リチウム塩と該有機塩の総重量が72重量%以上であり、かつ該リチウム塩と該有機塩の総重量のうち該有機塩の割合が56~82重量%であり、
該セパレータは、高分子樹脂を基材とする膜構造を形成しており、
該高分子樹脂は、分子内にカルボニル基を含むモノマーを構成単位とするコポリマーであり、
該コポリマーに占める該カルボニル基由来の酸素の存在量が、7重量%以上21重量%以下である、
前記リチウム二次電池。
(式(1)中、R1およびR2は、同一または異なって、フッ素原子または炭素数1~4のフッ素化アルキル基から選択される。)
(式(2)中、R3およびR4は、同一または異なって、炭素数1~8のアルキル基から選択され、R5、R6およびR7は、同一または異なって、水素原子および炭素数1~4のアルキル基からなる群より選択され、但しR 5 、R 6 およびR 7 は水素原子である。) - 該式(1)で表されるアニオンが、ビス(フルオロスルホニル)イミド、(フルオロスルホニル)(トリフルオロメタンスルホニル)イミドおよびビス(トリフルオロメタンスルホニル)イミドからなる群より選択される1つ以上である、請求項1に記載のリチウム二次電池。
- 該リチウム塩の式(1)で表されるアニオンと、該有機塩の式(1)で表されるアニオンとが、同一のアニオンである、請求項1または2に記載のリチウム二次電池。
- 該セパレータは、該基材の重量を100重量部として99重量部以上のポリイミド樹脂を含む、請求項1~3のいずれか一項に記載のリチウム二次電池。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021178583A JP7398128B2 (ja) | 2021-11-01 | 2021-11-01 | 高耐久リチウム二次電池 |
US17/961,006 US20230133495A1 (en) | 2021-11-01 | 2022-10-06 | Highly durable lithium secondary battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021178583A JP7398128B2 (ja) | 2021-11-01 | 2021-11-01 | 高耐久リチウム二次電池 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2023067393A JP2023067393A (ja) | 2023-05-16 |
JP7398128B2 true JP7398128B2 (ja) | 2023-12-14 |
Family
ID=86146347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021178583A Active JP7398128B2 (ja) | 2021-11-01 | 2021-11-01 | 高耐久リチウム二次電池 |
Country Status (2)
Country | Link |
---|---|
US (1) | US20230133495A1 (ja) |
JP (1) | JP7398128B2 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012033366A (ja) | 2010-07-30 | 2012-02-16 | Konica Minolta Holdings Inc | 多孔質セパレーター、リチウムイオン二次電池、及び多孔質セパレーターの製造方法 |
JP2020057523A (ja) | 2018-10-02 | 2020-04-09 | エリーパワー株式会社 | リチウムイオン電池の製造方法及びリチウムイオン電池 |
-
2021
- 2021-11-01 JP JP2021178583A patent/JP7398128B2/ja active Active
-
2022
- 2022-10-06 US US17/961,006 patent/US20230133495A1/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012033366A (ja) | 2010-07-30 | 2012-02-16 | Konica Minolta Holdings Inc | 多孔質セパレーター、リチウムイオン二次電池、及び多孔質セパレーターの製造方法 |
JP2020057523A (ja) | 2018-10-02 | 2020-04-09 | エリーパワー株式会社 | リチウムイオン電池の製造方法及びリチウムイオン電池 |
Also Published As
Publication number | Publication date |
---|---|
US20230133495A1 (en) | 2023-05-04 |
JP2023067393A (ja) | 2023-05-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108701820B (zh) | 表面涂布的正极活性材料粒子和包含其的二次电池 | |
US9225037B2 (en) | Lithium secondary battery using ionic liquid | |
KR101696625B1 (ko) | 전기화학 소자용 세퍼레이터, 이의 제조 방법 및 이를 포함하는 전기화학 소자 | |
JP2007299612A (ja) | 非水電解質二次電池用セパレータおよび非水電解質二次電池 | |
TW200805735A (en) | Lithium secondary cell using ionic liquid | |
EP3605668B1 (en) | Negative electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery using the same | |
CN109585755B (zh) | 锂离子二次电池及其制造方法 | |
JP7062189B2 (ja) | リチウム二次電池用正極及びこの製造方法 | |
WO2009099068A1 (ja) | ナトリウム二次電池 | |
KR102279820B1 (ko) | 폴리아믹산 수용액 조성물 | |
JP2010146960A (ja) | 非水系電解液二次電池並びに非水系電解液二次電池用正極及び負極 | |
JP6520496B2 (ja) | リチウムイオン二次電池用負極活物質、リチウムイオン二次電池用負極およびリチウムイオン二次電池 | |
WO2021039242A1 (ja) | リチウム二次電池 | |
KR100824931B1 (ko) | 활물질. 그 제조방법 및 이를 구비한 리튬 이차 전지 | |
JP2013056801A (ja) | リチウム複合金属酸化物およびその製造方法 | |
JP2010146962A (ja) | 非水系電解液二次電池並びに非水系電解液二次電池用正極及び負極 | |
JP7398128B2 (ja) | 高耐久リチウム二次電池 | |
JP2010146961A (ja) | 非水系電解液二次電池及び非水系電解液二次電池用セパレータ | |
JP7371970B1 (ja) | リチウム二次電池 | |
JP6520497B2 (ja) | リチウムイオン二次電池用負極活物質、リチウムイオン二次電池用負極およびリチウムイオン二次電池 | |
JP7465007B1 (ja) | リチウム二次電池 | |
EP3605674B1 (en) | Non-aqueous electrolyte secondary battery negative electrode material, and negative electrode and non-aqueous electrolyte secondary battery using non-aqueous electrolyte secondary battery negative electrode material | |
JP4586359B2 (ja) | 非水系電解液二次電池 | |
CN112385058B (zh) | 锂离子二次电池用正极材料、正极活性物质层和锂离子二次电池 | |
Peng et al. | Dynamically lithium-compensated polymer artificial SEI to assist highly stable lithium-rich manganese-based anode-free lithium metal batteries |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20220707 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20230711 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230911 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20231107 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20231127 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7398128 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |