WO2022210060A1 - 負極保護膜 - Google Patents
負極保護膜 Download PDFInfo
- Publication number
- WO2022210060A1 WO2022210060A1 PCT/JP2022/012898 JP2022012898W WO2022210060A1 WO 2022210060 A1 WO2022210060 A1 WO 2022210060A1 JP 2022012898 W JP2022012898 W JP 2022012898W WO 2022210060 A1 WO2022210060 A1 WO 2022210060A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- negative electrode
- protective film
- mass
- electrode protective
- parts
- Prior art date
Links
- -1 lithium salt compound Chemical class 0.000 claims abstract description 67
- 230000008859 change Effects 0.000 claims abstract description 26
- 238000003860 storage Methods 0.000 claims abstract description 24
- 239000003792 electrolyte Substances 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims description 152
- 239000007784 solid electrolyte Substances 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 10
- 238000007600 charging Methods 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 52
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 30
- 229920000642 polymer Polymers 0.000 description 30
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 19
- 238000002360 preparation method Methods 0.000 description 18
- 239000000178 monomer Substances 0.000 description 17
- 239000004014 plasticizer Substances 0.000 description 16
- 150000001875 compounds Chemical class 0.000 description 15
- 229910052782 aluminium Inorganic materials 0.000 description 14
- LKMJVFRMDSNFRT-UHFFFAOYSA-N 2-(methoxymethyl)oxirane Chemical compound COCC1CO1 LKMJVFRMDSNFRT-UHFFFAOYSA-N 0.000 description 13
- 238000004132 cross linking Methods 0.000 description 12
- 229920000570 polyether Polymers 0.000 description 12
- 238000006116 polymerization reaction Methods 0.000 description 12
- 229910001216 Li2S Inorganic materials 0.000 description 11
- 239000000945 filler Substances 0.000 description 11
- 239000003999 initiator Substances 0.000 description 11
- 229910003480 inorganic solid Inorganic materials 0.000 description 11
- 239000007774 positive electrode material Substances 0.000 description 11
- STMDPCBYJCIZOD-UHFFFAOYSA-N 2-(2,4-dinitroanilino)-4-methylpentanoic acid Chemical compound CC(C)CC(C(O)=O)NC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O STMDPCBYJCIZOD-UHFFFAOYSA-N 0.000 description 10
- 229910052732 germanium Inorganic materials 0.000 description 10
- 229910052719 titanium Inorganic materials 0.000 description 10
- 239000010936 titanium Substances 0.000 description 10
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000007773 negative electrode material Substances 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 8
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 description 8
- 229910001416 lithium ion Inorganic materials 0.000 description 8
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 229910052718 tin Inorganic materials 0.000 description 8
- 239000011149 active material Substances 0.000 description 7
- 229910052733 gallium Inorganic materials 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910018091 Li 2 S Inorganic materials 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 6
- 150000002170 ethers Chemical class 0.000 description 6
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 6
- 229920001897 terpolymer Polymers 0.000 description 6
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 239000002033 PVDF binder Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005227 gel permeation chromatography Methods 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 229920000058 polyacrylate Polymers 0.000 description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000002562 thickening agent Substances 0.000 description 5
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000011267 electrode slurry Substances 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 3
- 229910020343 SiS2 Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 125000005843 halogen group Chemical group 0.000 description 3
- 229910052738 indium Inorganic materials 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910001386 lithium phosphate Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000002685 polymerization catalyst Substances 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- ADXGNEYLLLSOAR-UHFFFAOYSA-N tasosartan Chemical compound C12=NC(C)=NC(C)=C2CCC(=O)N1CC(C=C1)=CC=C1C1=CC=CC=C1C=1N=NNN=1 ADXGNEYLLLSOAR-UHFFFAOYSA-N 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- YSUQLAYJZDEMOT-UHFFFAOYSA-N 2-(butoxymethyl)oxirane Chemical compound CCCCOCC1CO1 YSUQLAYJZDEMOT-UHFFFAOYSA-N 0.000 description 2
- NWLUZGJDEZBBRH-UHFFFAOYSA-N 2-(propan-2-yloxymethyl)oxirane Chemical compound CC(C)OCC1CO1 NWLUZGJDEZBBRH-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910005228 Ga2S3 Inorganic materials 0.000 description 2
- 229910005842 GeS2 Inorganic materials 0.000 description 2
- 239000002227 LISICON Substances 0.000 description 2
- 229910012329 Li3BO3—Li2SO4 Inorganic materials 0.000 description 2
- 229910013063 LiBF 4 Inorganic materials 0.000 description 2
- 229910013684 LiClO 4 Inorganic materials 0.000 description 2
- 229910010941 LiFSI Inorganic materials 0.000 description 2
- 229910013870 LiPF 6 Inorganic materials 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 229920000800 acrylic rubber Polymers 0.000 description 2
- 229910001413 alkali metal ion Inorganic materials 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- 229910021383 artificial graphite Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000012965 benzophenone Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 238000010281 constant-current constant-voltage charging Methods 0.000 description 2
- 229920006037 cross link polymer Polymers 0.000 description 2
- 238000010908 decantation Methods 0.000 description 2
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 2
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 2
- 238000007606 doctor blade method Methods 0.000 description 2
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VDVLPSWVDYJFRW-UHFFFAOYSA-N lithium;bis(fluorosulfonyl)azanide Chemical compound [Li+].FS(=O)(=O)[N-]S(F)(=O)=O VDVLPSWVDYJFRW-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000012766 organic filler Substances 0.000 description 2
- 150000001451 organic peroxides Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 230000002250 progressing effect Effects 0.000 description 2
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- YWFPXWMSGJXUFS-UPHRSURJSA-N (4z)-9-oxabicyclo[6.1.0]non-4-ene Chemical compound C1C\C=C/CCC2OC21 YWFPXWMSGJXUFS-UPHRSURJSA-N 0.000 description 1
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 1
- RTYCZCFQHXCMGC-UHFFFAOYSA-N 1-methoxy-2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]ethane Chemical compound COCCOCCOCCOCCOC.COCCOCCOCCOCCOC RTYCZCFQHXCMGC-UHFFFAOYSA-N 0.000 description 1
- OWUVDWLTQIPNLN-UHFFFAOYSA-N 13-oxabicyclo[10.1.0]trideca-4,8-diene Chemical compound C1CC=CCCC=CCCC2OC21 OWUVDWLTQIPNLN-UHFFFAOYSA-N 0.000 description 1
- GIWQSPITLQVMSG-UHFFFAOYSA-O 2,3-dimethylimidazolium ion Chemical compound CC1=[NH+]C=CN1C GIWQSPITLQVMSG-UHFFFAOYSA-O 0.000 description 1
- BBBUAWSVILPJLL-UHFFFAOYSA-N 2-(2-ethylhexoxymethyl)oxirane Chemical compound CCCCC(CC)COCC1CO1 BBBUAWSVILPJLL-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- GIRRZESVVMQABO-UHFFFAOYSA-N 2-(cyclohexen-1-ylmethoxymethyl)oxirane Chemical compound C1OC1COCC1=CCCCC1 GIRRZESVVMQABO-UHFFFAOYSA-N 0.000 description 1
- JJRUAPNVLBABCN-UHFFFAOYSA-N 2-(ethenoxymethyl)oxirane Chemical compound C=COCC1CO1 JJRUAPNVLBABCN-UHFFFAOYSA-N 0.000 description 1
- QNYBOILAKBSWFG-UHFFFAOYSA-N 2-(phenylmethoxymethyl)oxirane Chemical compound C1OC1COCC1=CC=CC=C1 QNYBOILAKBSWFG-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- SFJRUJUEMVAZLM-UHFFFAOYSA-N 2-[(2-methylpropan-2-yl)oxymethyl]oxirane Chemical compound CC(C)(C)OCC1CO1 SFJRUJUEMVAZLM-UHFFFAOYSA-N 0.000 description 1
- AUNOCGWVFDDCAD-UHFFFAOYSA-N 2-[(4-ethenylcyclohexyl)oxymethyl]oxirane Chemical compound C1CC(C=C)CCC1OCC1OC1 AUNOCGWVFDDCAD-UHFFFAOYSA-N 0.000 description 1
- ZADXFVHUPXKZBJ-UHFFFAOYSA-N 2-[(4-ethenylphenyl)methoxymethyl]oxirane Chemical compound C1=CC(C=C)=CC=C1COCC1OC1 ZADXFVHUPXKZBJ-UHFFFAOYSA-N 0.000 description 1
- WHNBDXQTMPYBAT-UHFFFAOYSA-N 2-butyloxirane Chemical compound CCCCC1CO1 WHNBDXQTMPYBAT-UHFFFAOYSA-N 0.000 description 1
- SZERAFCDZCHRQS-UHFFFAOYSA-N 2-ethenyl-3-methyloxirane Chemical compound CC1OC1C=C SZERAFCDZCHRQS-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- NJWSNNWLBMSXQR-UHFFFAOYSA-N 2-hexyloxirane Chemical compound CCCCCCC1CO1 NJWSNNWLBMSXQR-UHFFFAOYSA-N 0.000 description 1
- AAMHBRRZYSORSH-UHFFFAOYSA-N 2-octyloxirane Chemical compound CCCCCCCCC1CO1 AAMHBRRZYSORSH-UHFFFAOYSA-N 0.000 description 1
- NMOFYYYCFRVWBK-UHFFFAOYSA-N 2-pentyloxirane Chemical compound CCCCCC1CO1 NMOFYYYCFRVWBK-UHFFFAOYSA-N 0.000 description 1
- KOHBFAGTEWFCBI-UHFFFAOYSA-N 2-prop-1-enyloxirane Chemical compound CC=CC1CO1 KOHBFAGTEWFCBI-UHFFFAOYSA-N 0.000 description 1
- SYURNNNQIFDVCA-UHFFFAOYSA-N 2-propyloxirane Chemical compound CCCC1CO1 SYURNNNQIFDVCA-UHFFFAOYSA-N 0.000 description 1
- IYMZEPRSPLASMS-UHFFFAOYSA-N 3-phenylpyrrole-2,5-dione Chemical compound O=C1NC(=O)C(C=2C=CC=CC=2)=C1 IYMZEPRSPLASMS-UHFFFAOYSA-N 0.000 description 1
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 1
- PAVZJOKUCHKLOK-UHFFFAOYSA-N 4-ethenyl-7-oxabicyclo[4.1.0]hept-4-ene Chemical compound C1CC(C=C)=CC2OC21 PAVZJOKUCHKLOK-UHFFFAOYSA-N 0.000 description 1
- KGYYLUNYOCBBME-UHFFFAOYSA-M 4-fluoro-2-phenyl-4-(4-propylcyclohexyl)cyclohexa-1,5-diene-1-carboxylate Chemical compound C1CC(CCC)CCC1C1(F)C=CC(C([O-])=O)=C(C=2C=CC=CC=2)C1 KGYYLUNYOCBBME-UHFFFAOYSA-M 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- GXBYFVGCMPJVJX-UHFFFAOYSA-N Epoxybutene Chemical compound C=CC1CO1 GXBYFVGCMPJVJX-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910005839 GeS 2 Inorganic materials 0.000 description 1
- 229910019271 La0.55Li0.35TiO3 Inorganic materials 0.000 description 1
- 229910018130 Li 2 S-P 2 S 5 Inorganic materials 0.000 description 1
- 229910018133 Li 2 S-SiS 2 Inorganic materials 0.000 description 1
- 229910018119 Li 3 PO 4 Inorganic materials 0.000 description 1
- 229910011777 Li2 S Inorganic materials 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910008745 Li2O-B2O3-P2O5 Inorganic materials 0.000 description 1
- 229910008590 Li2O—B2O3—P2O5 Inorganic materials 0.000 description 1
- 229910012323 Li3.5Zn0.25GeO4 Inorganic materials 0.000 description 1
- 229910012605 Li3PO(4-3/2w)Nw Inorganic materials 0.000 description 1
- 229910012606 Li3PO(4−3/2w)Nw Inorganic materials 0.000 description 1
- 229910010640 Li6BaLa2Ta2O12 Inorganic materials 0.000 description 1
- 229910015118 LiMO Inorganic materials 0.000 description 1
- 229910002991 LiNi0.5Co0.2Mn0.3O2 Inorganic materials 0.000 description 1
- 229910012305 LiPON Inorganic materials 0.000 description 1
- 229910012666 LiTi2P3O12 Inorganic materials 0.000 description 1
- PEEHTFAAVSWFBL-UHFFFAOYSA-N Maleimide Chemical compound O=C1NC(=O)C=C1 PEEHTFAAVSWFBL-UHFFFAOYSA-N 0.000 description 1
- 239000002228 NASICON Substances 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910020346 SiS 2 Inorganic materials 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920007962 Styrene Methyl Methacrylate Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GCTFWCDSFPMHHS-UHFFFAOYSA-M Tributyltin chloride Chemical compound CCCC[Sn](Cl)(CCCC)CCCC GCTFWCDSFPMHHS-UHFFFAOYSA-M 0.000 description 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229910002113 barium titanate Inorganic materials 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
- 239000002585 base Substances 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 150000008366 benzophenones Chemical class 0.000 description 1
- ZPOLOEWJWXZUSP-WAYWQWQTSA-N bis(prop-2-enyl) (z)-but-2-enedioate Chemical compound C=CCOC(=O)\C=C/C(=O)OCC=C ZPOLOEWJWXZUSP-WAYWQWQTSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube 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
- 150000001768 cations Chemical class 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GSOLWAFGMNOBSY-UHFFFAOYSA-N cobalt Chemical compound [Co][Co][Co][Co][Co][Co][Co][Co] GSOLWAFGMNOBSY-UHFFFAOYSA-N 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- DFJYZCUIKPGCSG-UHFFFAOYSA-N decanedinitrile Chemical compound N#CCCCCCCCCC#N DFJYZCUIKPGCSG-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012933 diacyl peroxide Substances 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- UZZWBUYVTBPQIV-UHFFFAOYSA-N dme dimethoxyethane Chemical compound COCCOC.COCCOC UZZWBUYVTBPQIV-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 108010025899 gelatin film Proteins 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- ZTOMUSMDRMJOTH-UHFFFAOYSA-N glutaronitrile Chemical compound N#CCCCC#N ZTOMUSMDRMJOTH-UHFFFAOYSA-N 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- LLEVMYXEJUDBTA-UHFFFAOYSA-N heptanedinitrile Chemical compound N#CCCCCCC#N LLEVMYXEJUDBTA-UHFFFAOYSA-N 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229920003063 hydroxymethyl cellulose Polymers 0.000 description 1
- 229940031574 hydroxymethyl cellulose Drugs 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000009878 intermolecular interaction Effects 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- YQNQTEBHHUSESQ-UHFFFAOYSA-N lithium aluminate Chemical compound [Li+].[O-][Al]=O YQNQTEBHHUSESQ-UHFFFAOYSA-N 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 1
- ACFSQHQYDZIPRL-UHFFFAOYSA-N lithium;bis(1,1,2,2,2-pentafluoroethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)C(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)C(F)(F)F ACFSQHQYDZIPRL-UHFFFAOYSA-N 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- LBSANEJBGMCTBH-UHFFFAOYSA-N manganate Chemical compound [O-][Mn]([O-])(=O)=O LBSANEJBGMCTBH-UHFFFAOYSA-N 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- ADFPJHOAARPYLP-UHFFFAOYSA-N methyl 2-methylprop-2-enoate;styrene Chemical compound COC(=O)C(C)=C.C=CC1=CC=CC=C1 ADFPJHOAARPYLP-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- QXOYPGTWWXJFDI-UHFFFAOYSA-N nonanedinitrile Chemical compound N#CCCCCCCCC#N QXOYPGTWWXJFDI-UHFFFAOYSA-N 0.000 description 1
- BTNXBLUGMAMSSH-UHFFFAOYSA-N octanedinitrile Chemical compound N#CCCCCCCC#N BTNXBLUGMAMSSH-UHFFFAOYSA-N 0.000 description 1
- AVNANMSIFNUHNY-MQQKCMAXSA-N oxiran-2-ylmethyl (2e,4e)-hexa-2,4-dienoate Chemical compound C\C=C\C=C\C(=O)OCC1CO1 AVNANMSIFNUHNY-MQQKCMAXSA-N 0.000 description 1
- JUVGLPRIQOJMIR-UHFFFAOYSA-N oxiran-2-ylmethyl 3-phenylprop-2-enoate Chemical compound C=1C=CC=CC=1C=CC(=O)OCC1CO1 JUVGLPRIQOJMIR-UHFFFAOYSA-N 0.000 description 1
- NZSXYXVUIOHHSF-UHFFFAOYSA-N oxiran-2-ylmethyl hex-4-enoate Chemical compound CC=CCCC(=O)OCC1CO1 NZSXYXVUIOHHSF-UHFFFAOYSA-N 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920002627 poly(phosphazenes) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- FBCQUCJYYPMKRO-UHFFFAOYSA-N prop-2-enyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC=C FBCQUCJYYPMKRO-UHFFFAOYSA-N 0.000 description 1
- QTECDUFMBMSHKR-UHFFFAOYSA-N prop-2-enyl prop-2-enoate Chemical compound C=CCOC(=O)C=C QTECDUFMBMSHKR-UHFFFAOYSA-N 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- IAHFWCOBPZCAEA-UHFFFAOYSA-N succinonitrile Chemical compound N#CCCC#N IAHFWCOBPZCAEA-UHFFFAOYSA-N 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002226 superionic conductor Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- GJSGYPDDPQRWPK-UHFFFAOYSA-N tetrapentylammonium Chemical compound CCCCC[N+](CCCCC)(CCCCC)CCCCC GJSGYPDDPQRWPK-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 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
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- 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
- 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
- H01M50/431—Inorganic material
- H01M50/434—Ceramics
-
- 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
- H01M50/497—Ionic conductivity
-
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- 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 a negative electrode protective film for protecting negative electrodes used in power storage devices such as lithium ion batteries.
- Energy storage devices such as lithium-ion secondary batteries and electrochemical capacitors are used in electronic devices such as mobile phones, laptop computers, and camcorders. Recently, due to the increasing awareness of environmental protection and the development of related laws, the application of batteries for in-vehicle applications such as electric vehicles and hybrid electric vehicles and as storage batteries for household power storage is also progressing.
- a power storage device consists of a positive electrode, a negative electrode, and an electrolyte. As the application of power storage devices progresses, higher performance is required for power storage devices, and improvements in materials such as electrodes are progressing.
- Patent Document 1 discloses a battery in which a polymer solid electrolyte containing a lithium salt compound is interposed between the electrolyte and an electrode layer.
- the inventor of the present invention has made intensive studies to solve the above problems. As a result, the inventors have found that the above problems can be solved by a negative electrode protective film having constant mechanical properties during pressing and releasing. The present invention has been completed through further studies based on such findings.
- Item 1 A negative electrode protective film containing a lithium salt compound, Assuming that the thickness of the negative electrode protective film before pressing is 100%, the film thickness change rate when pressed for 10 minutes at a temperature of 25 ° C. and a pressure of 1 MPa is 1 to 20%, and the film when left for 10 minutes after the press pressure is released. A negative electrode protective film having a thickness change rate of -1 to 5%.
- Item 2 The negative electrode protective film according to Item 1, which has an ionic conductivity of 0.1 to 10 mS/cm at 25°C.
- Item 3 The negative electrode protective film has a film thickness change rate (X1) when pressed at a temperature of 25 ° C.
- Item 3 The negative electrode protective film according to Item 1 or 2, wherein the rate of change in film thickness of (X2) satisfies X1>X2.
- Item 4. A negative electrode with a negative electrode protective film, comprising a negative electrode and the negative electrode protective film according to any one of Items 1 to 3 laminated on the surface of the negative electrode.
- Item 5. An electricity storage device comprising a positive electrode, an electrolyte, the negative electrode protective film according to any one of Items 1 to 3, and a negative electrode.
- Item 6. The electricity storage device according to Item 5, wherein the electrolyte is a solid electrolyte.
- the negative electrode protective film of the present invention By using the negative electrode protective film of the present invention, it is possible to exhibit high battery characteristics in an electricity storage device. Although the details of this mechanism are not necessarily clear, for example, during charge/discharge, a suitable gap between the negative electrode and the electrolyte can be achieved by forming a negative electrode protective film that has certain mechanical properties when pressed and when released from the press. This is considered to be the result of obtaining an appropriate followability at .
- a numerical value connected with "-" means a numerical range including numerical values before and after "-" as a lower limit and an upper limit. If multiple lower limits and multiple upper limits are listed separately, any lower limit and upper limit can be selected and connected with "-".
- the negative electrode protective film of the present invention contains a lithium salt compound, Assuming that the thickness of the negative electrode protective film before pressing is 100%, the film thickness change rate (X1) is 1 to 20% when pressed for 10 minutes at a temperature of 25 ° C. and a pressure of 1 MPa, and left for 10 minutes after the press pressure is released.
- the film thickness change rate (X2) at the time is -1 to 5%.
- the film thickness change rate is, more specifically, the film thickness reduction rate. That is, when the thickness of the negative electrode protective film before pressing is taken as 100% (reference), the thickness reduction rate of the negative electrode protective film immediately after pressing the negative electrode protective film at a temperature of 25 ° C.
- the film thickness change rate (X1) and the film thickness change rate (X2) can be suitably adjusted by, for example, the mixing ratio of the plasticizer and the cross-linking aid described later. can.
- the negative electrode protective film of the present invention contains a lithium salt compound.
- a lithium salt compound having a wide potential window, such as those commonly used in lithium ion batteries, is suitable.
- lithium salt compounds include LiBF 4 , LiPF 6 , LiClO 4 , LiCF 3 SO 3 , LiN(CF 3 SO 2 ) 2 (LiTFSI), LiN(SFO 2 ) 2 (LiFSI), LiN(C 2 F 5 SO 2 ) 2 , LiN[CF 3 SC(C 2 F 5 SO 2 ) 3 ] 2 and the like, but are not limited thereto. These may be used alone or in combination of two or more.
- the negative electrode protective film of the present invention is preferably formed from a polymer composition containing a lithium salt compound and a polymer.
- the lower limit is preferably 5 parts by mass or more, more preferably 8 parts by mass or more, and 10 parts by mass or more with respect to 100 parts by mass of the polymer.
- the upper limit is preferably 900 parts by mass or less, more preferably 800 parts by mass or less, particularly preferably 700 parts by mass or less, and may be 500 parts by mass or less. It may be less than or equal to parts by mass.
- Polymers used for the negative electrode protective film include polyacrylonitrile, polyvinylidene fluoride, polytetrafluoroethylene, polyhexafluoropropylene, polyphosphazene, polysiloxane, polyvinyl fluoride, polyvinyl acetate, polyvinyl alcohol, polymethyl methacrylate, Examples include polyacrylic acid, polymethacrylic acid, styrene-butadiene rubber, nitrile-butadiene rubber, polystyrene, polyether polymers, etc. Polyacrylonitrile, polymethyl methacrylate, polyvinylidene fluoride, and polyether polymers are preferred.
- the polyether polymer preferably has structural units derived from alkylene oxide, and more preferably has structural units derived from ethylene oxide.
- the polyether polymer contains structural units derived from the monomer represented by formula (1), and optionally, structural units derived from formula (2) and/or derived from formula (3). It is preferable to have a structural unit of Only one type of the monomer represented by each formula may be used, or two or more types may be mixed and used.
- R is an alkyl group having 1 to 12 carbon atoms, or -CH 2 O(CH 2 CH 2 O) n R 4 , and R 4 is an alkyl group having 1 to 6 carbon atoms; , n is a number from 0 to 12. ]
- the compound of formula (2) can be obtained from commercial products or can be easily synthesized by a general ether synthesis method from epihalohydrin and alcohol. Moreover, a phenyl group is mentioned as an aryl group.
- Commercially available compounds include, for example, propylene oxide, butylene oxide, methyl glycidyl ether, ethyl glycidyl ether, butyl glycidyl ether, t-butyl glycidyl ether, benzyl glycidyl ether, 1,2-epoxidedecane, 1,2 -epoxyoctane, 1,2-epoxyheptane, 2-ethylhexyl glycidyl ether, 1,2-epoxydecane, 1,2-epoxyhexane, glycidyl phenyl ether, 1,2-epoxypentane, glycidyl isopropyl ether, etc.
- R is preferably —CH 2 O (CR 1 R 2 R 3 ), and at least one of R 1 , R 2 and R 3 is —CH 2 O ( CH2CH2O ) nR4 is preferred.
- R 4 is preferably an alkyl group having 1 to 6 carbon atoms, more preferably an alkyl group having 1 to 4 carbon atoms.
- n is preferably 0-6, more preferably 0-4.
- R 5 represents a group containing an ethylenically unsaturated group.
- Monomers of formula (3) include allyl glycidyl ether, 4-vinylcyclohexyl glycidyl ether, ⁇ -terpinyl glycidyl ether, cyclohexenylmethyl glycidyl ether, p-vinylbenzyl glycidyl ether, allylphenyl glycidyl ether, and vinyl glycidyl ether.
- ether 3,4-epoxy-1-butene, 3,4-epoxy-1-pentene, 4,5-epoxy-2-pentene, 1,2-epoxy-5,9-cyclododecanediene, 3,4- Epoxy-1-vinylcyclohexene, 1,2-epoxy-5-cyclooctene, glycidyl acrylate, glycidyl methacrylate, glycidyl sorbate, glycidyl cinnamate, glycidyl crotonate, glycidyl-4-hexenoate are used.
- Preferred are allyl glycidyl ether, glycidyl acrylate and glycidyl methacrylate.
- a structural unit derived from the monomer of formula (1) a structural unit derived from the monomer of formula (2), and a structural unit derived from the monomer of formula (3)
- the molar ratio is determined by 1 H-NMR spectrum.
- the structural unit derived from the monomer of formula (1) preferably has 30 mol% or more, more preferably 45 mol% or more, particularly preferably 60 mol% or more, and preferably 100 mol% or less. It is preferably 96 mol % or less, more preferably 93.5 mol % or less.
- the structural unit derived from the monomer of formula (2) may be 0 mol% or more, may be 3 mol% or more, may be 5 mol% or more, and may be 70 mol% or less, It may be 59 mol % or less, and may be 39 mol % or less.
- the structural unit derived from the monomer of formula (3) may be 0 mol% or more, 1 mol% or more, 1.5 mol% or more, or 2 mol% or more. It may be 3 mol % or more, 20 mol % or less, 15 mol % or less, or 12 mol % or less.
- the polyether polymer only structural units derived from the monomer of formula (1), structural units derived from the monomer of formula (2), and structural units derived from the monomer of formula (3) It may be composed, or may be a constituent unit derived from another monomer.
- the sum of structural units derived from the monomer of formula (1), structural units derived from the monomer of formula (2), and structural units derived from the monomer of formula (3) in the polyether polymer The molar ratio is preferably 90 mol % or more, more preferably 95 mol % or more, particularly preferably 98 mol % or more, and preferably 100 mol %.
- polyether polymers include ethylene oxide/diethylene glycol methyl glycidyl ether/allyl glycidyl ether terpolymer, ethylene oxide/diethylene glycol methyl glycidyl ether/glycidyl methacrylate terpolymer, ethylene oxide/diethylene glycol methyl glycidyl ether/acrylic acid.
- Glycidyl terpolymers, ethylene oxide/allyl glycidyl ether binary copolymers, ethylene oxide/glycidyl methacrylate binary copolymers, ethylene oxide/glycidyl acrylate binary copolymers, and the like can be mentioned.
- the weight average molecular weight of the polyether polymer is not particularly limited, it may be 10,000 to 3,000,000, more preferably 50,000 to 2,500,000, and particularly preferably 100,000 to 2,000,000.
- the weight average molecular weight is calculated by gel permeation chromatography (GPC) using dimethylformamide (DMF) as a solvent and standard polystyrene conversion.
- a polyether polymer can be synthesized, for example, as follows.
- a coordinating anion initiator such as an organic aluminum-based catalyst system, an organic zinc-based catalyst system, an organic tin-phosphate ester condensate catalyst system, or potassium containing K + as a counter ion Polyether (i ) is obtained.
- Coordinating anionic initiators are preferred from the viewpoint of the degree of polymerization and the properties of the resulting copolymer. Among them, organic tin-phosphate ester condensate catalysts are particularly preferred because they are easy to handle.
- the content of the polymer contained in the negative electrode protective film is preferably 5 to 95% by mass, more preferably 10 to 90% by mass, based on 100% by mass of the entire negative electrode protective film, and may be 5 to 50% by mass, 5 to 30% by mass, 5 to 20% by mass, 10 to 30% by mass, and 10 to 20% by mass can also be exemplified.
- the negative electrode protective film may contain room-temperature molten salt.
- Room-temperature molten salt refers to a salt that is at least partially liquid at room temperature
- room temperature refers to the temperature range in which the power source normally operates.
- the temperature range in which the power supply is expected to operate normally has an upper limit of about 120°C, possibly about 60°C, and a lower limit of about -40°C, sometimes about -20°C.
- Room-temperature molten salts are also called ionic liquids, and pyridine, aliphatic amine, and alicyclic amine quaternary ammonium organic cations are known.
- quaternary ammonium organic cations include imidazolium ions such as dialkylimidazolium and trialkylimidazolium, tetraalkylammonium ions, alkylpyridinium ions, pyrazolium ions, pyrrolidinium ions and piperidinium ions.
- imidazolium cations are preferred.
- the tetraalkylammonium ion includes, but is limited to, trimethylethylammonium ion, trimethylethylammonium ion, trimethylpropylammonium ion, trimethylhexylammonium ion, tetrapentylammonium ion, triethylmethylammonium ion, and the like. is not.
- alkylpyridinium ion N-methylpyridinium ion, N-ethylpyridinium ion, N-propylpyridinium ion, N-butylpyridinium ion, 1-ethyl-2methylpyridinium ion, 1-butyl-4-methyl Examples include, but are not limited to, pyridinium ion, 1-butyl-2,4-dimethylpyridinium ion, and the like.
- imidazolium cations include 1,3-dimethylimidazolium ion, 1-ethyl-3-methylimidazolium ion, 1-methyl-3-ethylimidazolium ion, 1-methyl-3-butylimidazolium ion, 1- Butyl-3-methylimidazolium ion, 1,2,3-trimethylimidazolium ion, 1,2-dimethyl-3-ethylimidazolium ion, 1,2-dimethyl-3-propylimidazolium ion, 1-butyl- Examples include, but are not limited to, 2,3-dimethylimidazolium ion.
- room-temperature molten salts having these cations may be used alone, or two or more of them may be mixed and used.
- the negative electrode protective film contains a room-temperature molten salt
- its content is preferably 10 to 1000 parts by mass, more preferably 20 to 500 parts by mass, relative to 100 parts by mass of the polymer.
- the negative electrode protective film may contain a plasticizer and the like.
- the plasticizer is not particularly limited, a dicyano compound and an ether compound are preferable.
- a plasticizer is added, it is preferably a crosslinked polymer, that is, a crosslinked polymer.
- This cross-linking is preferably a chemical cross-linking, which can suppress the outflow of the plasticizer of the negative electrode protective film.
- the film thickness change rate can be suitably adjusted by adjusting the mixing ratio of the plasticizer and the cross-linking aid described below.
- Dicyano compounds include succinonitrile, glutaronitrile, adiponitrile, 1,5-dicyanopentane, 1,6-dicyanohexane, 1,7-dicyanoheptane, 1,8-dicyanooctane and the like.
- ether compounds include linear ether compounds and branched ether compounds.
- linear ether compounds examples include triglyme (triethylene glycol dimethyl ether) and tetraglyme (tetraethylene glycol dimethyl ether).
- branched ether compounds include the following multi-branched ether compounds.
- the content of the plasticizer is preferably 10 to 380 parts by mass, more preferably 50 to 350 parts by mass, with respect to 100 parts by mass of the polymer. 125 to 300 parts by mass is particularly preferred.
- a filler may be included in the negative electrode protective film.
- the filler is not particularly limited, but any material that is electrochemically stable and electrically insulating may be used, and inorganic and organic fillers are used.
- specific examples of inorganic fillers include inorganic oxides such as silica, alumina, alumina-silicate, zirconia, potassium titanate, barium titanate and lithium aluminate, and inorganic nitrides such as aluminum nitride and silicon nitride.
- organic fillers include acrylic resins (polymethyl methacrylate, etc.), styrene resins, fluorine resins, urethane resins, etc., polyolefin resins, styrene-butadiene copolymers, styrene-methyl methacrylate copolymers. , polyalkylene oxide (polyethylene oxide, etc.). These fillers can be used alone or in combination of two or more.
- the shape of the filler is not particularly limited, and may be spherical, flat, acicular, columnar, amorphous, and the like.
- the particle size of the filler can be measured by a dynamic light scattering method (dispersion medium: water).
- the average particle size of the filler is preferably 0.1-20 ⁇ m, more preferably 0.2-15 ⁇ m, and may be 1-15 ⁇ m.
- the content of the filler may be in the range of 1 to 80 parts by mass, preferably 10 to 60 parts by mass, more preferably 15 to 50 parts by mass, relative to 100 parts by mass of the polymer.
- the negative electrode protective film has a thickness change rate of 1 to 20% and 2 to 20% when pressed for 10 minutes at a temperature of 25 ° C. and a pressure of 1 MPa, with the thickness of the negative electrode protective film before pressing being 100%. is preferred, and 2 to 15% is particularly preferred. It is shown by the following formula.
- X1 (%) [(A1-A2)/A1] x 100 Film thickness of negative electrode protective film before pressing: A1 Film thickness when pressed for 10 minutes at a temperature of 25 ° C. and a pressure of 1 MPa: A2 Film thickness change rate when pressed for 10 minutes at a temperature of 25 ° C. and a pressure of 1 MPa: X1
- the negative electrode protective film is pressed at a temperature of 25 ° C. and a pressure of 1 MPa for 10 minutes, with the thickness of the negative electrode protective film before pressing being 100%, and the film thickness change rate when left for 10 minutes after releasing the pressing pressure is -1 to 5. %, preferably 0 to 5%, particularly preferably 0 to 4%. It is shown by the following formula.
- X2 (%) [(A1-A3)/A1] x 100 Film thickness of negative electrode protective film before pressing: A1 Film thickness when pressed for 10 minutes at a temperature of 25° C. and a pressure of 1 MPa, and left for 10 minutes after releasing the press pressure: A3 Change rate of film thickness when pressed at a temperature of 25° C. and a pressure of 1 MPa for 10 minutes and left for 10 minutes after releasing the pressing pressure: X2
- the negative electrode protective film is the film thickness change rate (X1) when pressed at a temperature of 25 ° C. and a pressure of 1 MPa for 10 minutes, and the film thickness when pressed at a temperature of 25 ° C. and a pressure of 1 MPa for 10 minutes and left for 10 minutes after the press pressure is released.
- Rate of change: (X2) may have a relationship of X1>X2, but preferably 0.05 ⁇ X2 / X1 ⁇ 0.95, and 0.1 ⁇ X2 / X1 ⁇ 0.95 is more preferable, and 0.2 ⁇ X2/X1 ⁇ 0.90 is more preferable.
- the film thickness of the negative electrode protective film can be appropriately adjusted according to the size of the electricity storage device (the size of the negative electrode, etc.). .1-50 ⁇ m, 0.1-30 ⁇ m, 0.2-200 ⁇ m, 0.2-50 ⁇ m, 0.2-30 ⁇ m, 0.5-200 ⁇ m, 0.5-50 ⁇ m, 0.5-30 ⁇ m, 1-200 ⁇ m , 1 to 50 ⁇ m, 1 to 30 ⁇ m, 2 to 200 ⁇ m, 2 to 50 ⁇ m, 2 to 30 ⁇ m, 5 to 200 ⁇ m, 5 to 50 ⁇ m, 5 to 30 ⁇ m, 10 to 200 ⁇ m, 10 to 50 ⁇ m, and 10 to 30 ⁇ m.
- It is preferably in the range of 0.1 ⁇ m to 200 ⁇ m, more preferably in the range of 0.2 ⁇ m to 100 ⁇ m, still more preferably in the range of 0.2 ⁇ m to 50 ⁇ m, and particularly preferably in the range of 0.5 ⁇ m to 30 ⁇ m.
- the ion conductivity of the negative electrode protective film at 25° C. is preferably 0.1 to 10 mS/cm, more preferably 0.3 to 9 mS/cm, particularly 0.4 to 8 mS/cm. preferable.
- the negative electrode protective film in the present invention is preferably a gel film.
- a gel is a three-dimensional network structure formed by chemical bonds (covalent bonds, ionic bonds, coordinate bonds, etc.) or intermolecular interactions such as crystallization and molecular entanglement. It is a swollen body that retains solvent molecules.
- the method for producing the negative electrode protective film of the present invention is not particularly limited, it is formed using the negative electrode protective film composition described in the section "2.
- Composition for negative electrode protective film contains a polymer, a lithium salt compound, etc., preferably contains a plasticizer, optionally contains a filler, and if necessary, is mixed with an organic solvent and dissolved, and the base is
- a method of casting the composition on a material for example, a PET film, a Teflon (registered trademark) plate, etc.), removing the solvent, and then heating or irradiating active energy rays such as ultraviolet rays to form a negative electrode protective film.
- a negative electrode protective film can also be produced by casting the composition on the surface of the negative electrode or the electrolyte.
- composition for negative electrode protective film As the polymer used in the negative electrode protective film composition, the polymers described in the section “1. Negative electrode protective film” can be used.
- the lithium salt compound used in the negative electrode protective film composition the lithium salt compound described in the section “1. Negative electrode protective film” can be used. is preferably 5 parts by mass or more, more preferably 8 parts by mass or more, particularly preferably 10 parts by mass or more, and the upper limit is preferably 900 parts by mass or less. It is more preferably contained in an amount of 700 parts by mass or less, and particularly preferably in an amount of 700 parts by mass or less.
- the plasticizer used in the negative electrode protective film composition the plasticizer described in the section “1. Negative electrode protective film” can be used. It is preferably 50 to 350 parts by mass, particularly preferably 125 to 300 parts by mass.
- Negative electrode protective film As the filler used in the negative electrode protective film composition, the filler described in the section “1. Negative electrode protective film” can be used. 1 to 80 parts by mass, preferably 10 to 60 parts by mass, more preferably 15 to 50 parts by mass.
- a reaction initiator can be used, and examples thereof include a thermal reaction initiator and a photoreaction initiator, and a cross-linking aid can be added.
- a radical initiator selected from organic peroxides, azo compounds, etc.
- organic peroxides include ketone peroxides, peroxyketals, hydroperoxides, dialkyl peroxides, diacyl peroxides, peroxyesters, and the like, which are commonly used for cross-linking.
- azo compounds include azonitrile.
- Compounds, azoamide compounds, azoamidine compounds, and the like, which are commonly used for cross-linking purposes, can be used.
- the amount of the radical initiator to be added varies depending on the type, but it is usually in the range of 0.1 to 10 parts by mass based on 100 parts by mass of the polymer.
- radical initiators such as alkylphenones, benzophenones, acylphosphine oxides, titanocenes, triazines, bisimidazoles, and oxime esters are used.
- the amount of these radical polymerization initiators to be added varies depending on the type, it is usually in the range of 0.01 to 5.0 parts by mass based on 100 parts by mass of the polymer.
- crosslinking aids include ethylene glycol diacrylate, ethylene glycol dimethacrylate, oligoethylene glycol diacrylate, oligoethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, trimethylolpropane triacrylate, allyl methacrylate, allyl acrylate, diallyl maleate, Triallyl isocyanurate, maleimide, phenylmaleimide, maleic anhydride and the like can be optionally used.
- the content of the cross-linking aid is preferably in the range of 25 to 60 parts by mass, more preferably in the range of 30 to 50 parts by mass, based on 100 parts by mass of the polymer.
- the negative electrode protective film composition may contain water or an organic solvent.
- Organic solvents include toluene, xylene, benzene, acetonitrile, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, and glyme (ethylene glycol dimethyl ether). , diglyme (diethylene glycol dimethyl ether), THF (tetrahydrofuran).
- the content of water or organic solvent is preferably 20 to 1400 parts by mass, more preferably 50 to 900 parts by mass, relative to 100 parts by mass of the polymer.
- the total amount of water or organic solvent and plasticizer is preferably 200 to 1500 parts by mass, more preferably 300 to 1200 parts by mass, with respect to 100 parts by mass of the polymer. is more preferable, and 400 to 1000 parts by mass is particularly preferable.
- the cross-linking reaction can be carried out by heating at a temperature of room temperature to about 200° C. for about 10 minutes to 24 hours when using heat.
- a xenon lamp, a mercury lamp, a high pressure mercury lamp and a metal halide lamp can be used in the case of using ultraviolet rays.
- the electrolyte is irradiated with a wavelength of 365 nm and a light intensity of 1 to 50 mW/cm 2 for 0.1 to 30 minutes. can be done.
- the electric storage device of the present invention includes a positive electrode, an electrolyte, the negative electrode protective film described in the section "1. Negative electrode protective film”, and a negative electrode.
- the negative electrode protective film is characterized in that it is interposed between the negative electrode and the electrolyte.
- the negative electrode protective film is preferably in contact with each of the negative electrode and the electrolyte.
- a negative electrode protective film may be laminated on the surface of the negative electrode to form a negative electrode with a negative electrode protective film, which may be applied to an electric storage device.
- the negative electrode protective film can be applied to an electric storage device by laminating the negative electrode protective film on the surface of the electrolyte and arranging the electrolyte and the negative electrode such that the negative electrode protective film is positioned on the negative electrode side.
- known positive and negative electrodes can be used, and an electrode having a positive electrode material layer or a negative electrode material layer as a current collector can be exemplified.
- a known current collector can be used for the positive electrode and the negative electrode.
- metals such as aluminum, nickel, stainless steel, gold, platinum, and titanium are used for the positive electrode as current collectors.
- Metals such as copper, nickel, stainless steel, gold, platinum, and titanium are used in the negative electrode as current collectors.
- the positive electrode material layer and the negative electrode material layer contain at least a positive electrode active material and a negative electrode active material, respectively, and may further contain a conductive aid, a binder, and a thickener.
- the positive electrode active material used in the present invention is a lithium metal-containing composite oxide powder having a composition of LiMO 2 , LiM 2 O 4 , Li 2 MO 3 or LiMEO 4 .
- M in the formula mainly consists of transition metals and contains at least one of Co, Mn, Ni, Cr, Fe and Ti.
- M consists of a transition metal, Al, Ga, Ge, Sn, Pb, Sb, Bi, Si, P, B, etc. may be added in addition to the transition metal.
- E contains at least one of P and Si.
- the particle diameter of the positive electrode active material is preferably 50 ⁇ m or less, more preferably 20 ⁇ m or less. These active materials have an electromotive force of 3 V (vs. Li/Li+) or more.
- positive electrode active materials include lithium cobaltate, lithium nickelate, nickel/cobalt/lithium manganate (ternary system), spinel-type lithium manganate, and lithium iron phosphate.
- the negative electrode active material used in the present invention is a carbon material (natural graphite, artificial graphite, amorphous carbon, etc.) having a structure (interlayer compound) capable of absorbing and releasing alkali metal ions such as lithium ions, or lithium ion metals such as lithium, aluminum-based compounds, tin-based compounds, silicon-based compounds, and titanium-based compounds that can occlude and release alkali metal ions such as
- the particle size is preferably 10 nm or more and 100 ⁇ m or less, more preferably 20 nm or more and 20 ⁇ m or less.
- it may be used as a mixed active material of a metal and a carbon material.
- the content of the active material in the positive electrode material layer and the negative electrode material layer may be, for example, 100% by mass, about 99.9 to 50% by mass, more preferably about 99.5 to 70% by mass, and further About 99 to 85% by mass is preferred.
- a known conductive aid can be used, and conductive carbon black such as graphite, furnace black, acetylene black, ketjen black, carbon fiber such as carbon nanotube, or metal powder, etc. mentioned.
- conductive carbon black such as graphite, furnace black, acetylene black, ketjen black, carbon fiber such as carbon nanotube, or metal powder, etc. mentioned.
- One or two or more of these conductive aids may be used.
- the content of the conductive aid is not particularly limited, but the upper limit is preferably 20 parts by mass or less, and 15 parts by mass or less with respect to 100 parts by mass of the total amount of the active material. It is more preferably 10 parts by mass or less, and the lower limit of the content of the conductive aid is usually 0.05 parts by mass or more, 0.1 parts by mass or more, and 0.2 parts by mass or more. , 0.5 parts by mass or more, and 2 parts by mass or more.
- binder for example, one or more selected from fluororesins such as PVdF, fluororubbers, acrylic rubbers, modified acrylic rubbers, styrene-butadiene rubbers, acrylic polymers, vinyl polymers, and the ion-conductive polymers described above. compounds can be used.
- fluororesins such as PVdF, fluororubbers, acrylic rubbers, modified acrylic rubbers, styrene-butadiene rubbers, acrylic polymers, vinyl polymers, and the ion-conductive polymers described above. compounds
- binders are added in an amount of preferably 5 parts by mass or less, more preferably 3 parts by mass or less, for example 0.01 to 2 parts by mass, per 100 parts by mass of the active material.
- thickeners include carboxymethyl cellulose, methyl cellulose, hydroxymethyl cellulose, ethyl cellulose and salts thereof (alkali metal salts such as sodium salts, ammonium salts), polyvinyl alcohol, polyacrylates, polyethylene oxide, and the like. You may use 1 type(s) or 2 or more types of these thickeners. These thickeners are added in an amount of preferably 5 parts by mass or less, more preferably 3 parts by mass or less, for example 0.01 to 2 parts by mass, per 100 parts by mass of the active material. Moreover, when the viscosity of the coating liquid is low, a thickener can be used together.
- positive electrode and negative electrode which include a current collector, a positive electrode material layer, and a negative electrode material layer
- a general method is used.
- positive electrode material or negative electrode material paste Coating liquid
- a negative electrode active material powder, a positive electrode active material powder, a conductive aid, a binder, etc. are dispersed in water to form a slurry, which is applied to a metal electrode substrate, and then a blade having a predetermined slit width is used to obtain an appropriate slurry. Uniform thickness.
- the electrode is dried, for example, with hot air at 100° C. or under reduced pressure at 80° C. in order to remove excess organic solvent.
- An electrode is manufactured by press-molding the dried electrode with a press machine.
- the electrolyte is preferably a solid electrolyte, preferably a polymer solid electrolyte or an inorganic solid electrolyte, and more preferably an oxide-based solid electrolyte or a sulfide-based solid electrolyte.
- An inorganic solid electrolyte is generally an aggregate of inorganic solid particles that constitute the electrolyte.
- the oxide-based solid electrolyte is particularly limited as long as it contains oxygen, has ion conductivity of a metal belonging to Group 1 or Group 2 of the periodic table, and has electronic insulation. not a thing
- Li, P and O Phosphorus compounds containing Li, P and O are also desirable.
- lithium phosphate Li 3 PO 4
- LiPON in which a part of oxygen in lithium phosphate is replaced with nitrogen
- LiPOD LiPOD
- D is Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb , Mo, Ru, Ag, Ta, W, Pt, Au, etc.
- LiAON A is at least one selected from Si, B, Ge, Al, C, Ga, etc.
- AON is at least one selected from Si, B, Ge, Al, C, Ga, etc.
- the sulfide-based solid electrolyte is particularly limited as long as it contains sulfur, has ion conductivity of a metal belonging to Group 1 or Group 2 of the periodic table, and has electronic insulation. not a thing Examples thereof include lithium ion conductive inorganic solid electrolytes satisfying the composition represented by the following formula.
- M represents an element selected from B, Zn, Sn, Si, Cu, Ga, Sb, Al and Ge. Among them, B, Sn, Si, Al and Ge are preferred, and Sn, Al and Ge are more preferred.
- A represents I, Br, Cl or F, preferably I or Br, and particularly preferably I.
- a to e indicate the composition ratio of each element, and a:b:c:d:e satisfies 1-12:0-1:1:2-12:0-5. Further, a is preferably 1 to 9, more preferably 1.5 to 4. b is preferably 0 to 0.5. Further, d is preferably 3 to 7, more preferably 3.25 to 4.5. Further, e is preferably 0 to 3, more preferably 0 to 2.
- the ratio of Li 2 S and P 2 S 5 is Li 2 S:P 2 S 5 molar ratio of 60:40 to 85:15. preferably 65:35 to 80:20.
- sulfide-based solid electrolytes include Li 2 S/SiS 2 , Li 2 S—SiS 2 /P 2 S 5 , Li 2 S/P 2 S 5 , Li 2 S/GeS 2 , Li 2 S / GeS2 / Ga2S3 , Li2S / B2S3 , Li2S / Ga2S3 , Li2S / Al2S3 , Li2S / GeS2 / P2S5 , Li2 S / Al2S3 / P2S5 , Li2S / Al2S3 / P2S5 , Li2S / P2S3 , Li2S / P2S3 , Li2S / P2S3 / P2S5 , Li2S / SiS2 / Li4SiO4 , Li2S / SiS2 / Li3PO4 , LiX/ Li2S / P2S5 , LiX/ Li2S / SiS
- the inorganic solid electrolyte When the inorganic solid electrolyte is particulate, its particle diameter is, for example, 0.01 to 100 ⁇ m, preferably 0.1 to 20 ⁇ m.
- the method for manufacturing the electricity storage device of the present invention is not particularly limited, and at least the device is composed of a positive electrode, a negative electrode, an electrolyte, and a negative electrode protective film, and is manufactured by a known method.
- a positive electrode, an electrolyte, a negative electrode, and a negative electrode protective film are arranged between the negative electrode and the electrolyte, and then inserted into an outer can. After that, it is obtained by joining the sealing body by tab welding or the like, enclosing the sealing body, and caulking it.
- the shape of the battery is not limited, but examples thereof include a coin shape, a cylindrical shape, a sheet shape, and the like, and a structure in which two or more cells are stacked may be used.
- a film of the protective film composition for the negative electrode was prepared and the physical properties of the film were evaluated. Evaluation was performed in the following experiments.
- Polymer was measured by the following method. [Composition molar ratio] It was determined from the signal intensity ratio derived from the composition unit by 1 H-NMR spectrum. [Weight average molecular weight] Gel permeation chromatography (GPC) measurement was performed, and the weight average molecular weight was calculated by standard polystyrene conversion. GPC measurement was performed at 60 ° C. using RID-6A manufactured by Shimadzu Corporation, Shodex KD-807, KD-806, KD-806M and KD-803 columns manufactured by Showa Denko Co., Ltd., and DMF as a solvent. .
- the polymerization temperature at this time was 20° C., and the reaction was carried out for 10 hours.
- the polymerization reaction was stopped by adding 1 mL of methanol. After the polymer was taken out by decantation, it was dried at 40° C. under normal pressure for 24 hours and further at 45° C. under reduced pressure for 10 hours to obtain 210 g of polymer.
- a negative electrode for a solid electrolyte secondary battery was produced (basis weight: 4.0 mg/cm 2 , negative electrode density: 1.1 g/cm 3 , porosity: 26%).
- a negative electrode protective film composition 1 was prepared by completely dissolving 3 parts by mass of benzophenone as an initiator in 700 parts by mass of ethylene glycol dimethyl ether (monoglyme) as a coating solvent.
- Negative Electrode with Protective Film In an argon glove box, the negative electrode protective film composition 1 was dropped onto the precursor of the negative electrode. After drying at room temperature for 10 minutes, the solvent was removed under vacuum at 50° C. for 1 hour. Next, cross-linking was performed by UV irradiation at 1 J/cm 2 in an argon glove box to prepare negative electrode 1 (negative electrode with negative electrode protective film) laminated with negative electrode protective film 1 having a thickness of 15 ⁇ m.
- negative electrode protective film composition 2 was prepared in the same manner as the negative electrode protective film composition 1, except that the type of plasticizer was changed to triethylene glycol dimethyl ether (triglyme).
- Negative Electrode with Protective Film Formed Negative Electrode 2 (a negative electrode 2 ( A negative electrode with a negative electrode protective film) was produced.
- negative electrode protective film composition 3 A negative electrode protective composition was prepared in the same manner as negative electrode protective composition 1 except that 20 parts by mass of nanosilica (manufactured by Admatechs, particle size 0.2 to 0.4 ⁇ m) was further added. 3 was produced.
- Negative electrode protective film composition 4 was prepared in the same manner as negative electrode protective composition 1 except that the amount of LiTFSI was changed to 150 parts by mass and the amount of tetraglyme was changed to 280 parts by mass. did.
- Negative Electrode with Protective Film Formed Negative Electrode 4 (a negative electrode 4 ( A negative electrode with a negative electrode protective film) was produced.
- negative electrode protective film composition 5 A negative electrode protective film composition 5 was prepared in the same manner as the negative electrode protective composition 1 except that the amount of LiTFSI was changed to 160 parts by mass and the amount of tetraglyme was changed to 300 parts by mass. did.
- Negative Electrode Formed with Protective Film Negative electrode 6 (negative electrode with negative electrode protective film) laminated with negative electrode protective film 6 having a thickness of 0.5 ⁇ m was prepared in the same manner as in Example 1 using composition 1 for negative electrode protective film. did.
- Example 7 Preparation of Negative Electrode with Protective Film Using Composition 1 for negative electrode protective film, negative electrode 7 (negative electrode with negative electrode protective film) laminated with negative electrode protective film 7 having a thickness of 30 ⁇ m was prepared in the same manner as in Example 1.
- negative electrode protective film composition 6 was prepared in the same manner as the negative electrode protective film composition 1 except that the amount of LiTFSI was changed to 36 parts by mass and the amount of TMPTMA was changed to 5 parts by mass, and the plasticizer was not used. A protective film composition 6 was prepared.
- Negative Electrode with Protective Film Formed Negative Electrode 8 (a negative electrode 8 ( A negative electrode with a negative electrode protective film) was produced.
- negative electrode protective film composition 7 was prepared in the same manner as the negative electrode protective film composition 1 except that the amount of LiTFSI was changed to 180 parts by mass and the amount of tetraglyme was changed to 400 parts by mass. made.
- Negative Electrode 9 A negative electrode with a negative electrode protective film
- a negative electrode 9 A negative electrode with a negative electrode protective film
- Negative Electrode Protective Film Composition 8 A negative electrode protective film composition 1 was prepared in the same manner as for negative electrode protective film composition 1 except that the amount of polymer was changed to 10 parts by mass, the amount of LiTFSI was changed to 75 parts by mass, and the amount of TMPTMA was changed to 10 parts by mass. A protective film composition 8 was prepared.
- Negative electrode 10 laminated with negative electrode protective film 10 having a thickness of 15 ⁇ m was prepared in the same manner as in Example 1, except that composition 1 for negative electrode protective film was changed to composition 8 for negative electrode protective film. made.
- A2 Film thickness change rate when pressed at a temperature of 25° C. and a pressure of 1 MPa for 10 minutes (referred to as “thickness change rate during pressing” in the table):
- X1 X2 (%) [(A1-A3)/A1] x 100 Film thickness of negative electrode protective film before pressing: A1 Film thickness when pressed for 10 minutes at a temperature of 25° C. and a pressure of 1 MPa, and left for 10 minutes after releasing the press pressure: A3
- the rate of change in film thickness when pressed at a temperature of 25° C. and a pressure of 1 MPa for 10 minutes and left for 10 minutes after releasing the pressing pressure (referred to as “thickness change rate before and after test” in the table): X2
- the ionic conductivity of protective films 1 to 10 was measured using a dynamic viscoelasticity tester (potentiostat PMC-1000 manufactured by Ametec Science Instruments Co., Ltd.) using negative electrodes 1 to 10 as samples. Conducted at 25 ° C., negative electrodes 1 to 10 were sandwiched between SUS electrodes, a voltage of 30 mV, an alternating current method with a frequency range of 10 Hz to 10 MHz was used, and the ionic conductivity of the protective film was calculated from the bulk resistance of the protective film by the complex impedance method. .
- Preparation Example of Positive Electrode 100 parts by mass of NCM (LiNi 0.5 Co 0.2 Mn 0.3 O 2 ) as a positive electrode active material, 3 parts by mass of acetylene black and 3 parts by mass of graphite as a conductive agent, and polyvinylidene fluoride (PVdF) as a binder. ) was added, and further added to the NMP solution so that the solid content concentration of the slurry was 35% by mass, followed by thorough mixing to obtain a positive electrode slurry. The resulting positive electrode slurry was applied onto an aluminum current collector having a thickness of 20 ⁇ m using a die coater, dried at 100° C.
- NCM LiNi 0.5 Co 0.2 Mn 0.3 O 2
- PVdF polyvinylidene fluoride
- a body was produced (weight per unit area: 6.0 mg/cm 2 , positive electrode density: 3.0 g/cm 3 , porosity: 26%).
- Example of production of oxide-based electrolyte secondary battery Production example of negative electrode with protective film formed in argon glove box Using Li 7 La 3 Zr 2 O 12 (film thickness: 500 ⁇ m) as the positive electrode and inorganic solid electrolyte, the positive electrode, the inorganic solid electrolyte and the negative electrode were laminated in this order and crimped to manufacture a 2032 type coin battery for testing.
- the negative electrode protective film has film strength, flexibility, binding properties, and ionic conductivity. From the results of Examples and Comparative Examples, the inorganic solid electrolyte secondary battery in which the protective film is arranged between the negative electrode and the inorganic solid electrolyte has excellent battery characteristics (discharge capacity, charge-discharge cycle capacity retention). I understand.
- the inorganic solid electrolyte secondary battery of the present invention can exhibit excellent charge-discharge characteristics, and can be suitably used for large battery applications such as vehicle applications such as electric vehicles and hybrid electric vehicles and storage batteries for household power storage. It is possible.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Secondary Cells (AREA)
Abstract
Description
項1 リチウム塩化合物を含有する負極保護膜であって、
プレス前の負極保護膜の膜厚を100%として、温度25℃、圧力1MPaで10分間プレスした時の膜厚変化率が1~20%であり、プレス圧解除後に10分間放置した時の膜厚変化率が-1~5%である負極保護膜。
項2 25℃におけるイオン伝導率が0.1~10mS/cmである項1に記載の負極保護膜。
項3 前記負極保護膜は、温度25℃、圧力1MPaで10分間プレスした時の膜厚変化率(X1)と温度25℃、圧力1MPaで10分間プレスし、プレス圧解除後に10分間放置した時の膜厚の変化率:(X2)がX1>X2の関係である、項1または2に記載の負極保護膜。
項4 負極と、前記負極表面に積層された項1~3のいずれか1項に記載の負極保護膜と、を備える、負極保護膜付き負極。
項5 正極、電解質、項1~3のいずれか1項に記載の負極保護膜、負極を含有する蓄電デバイス。
項6 電解質が固体電解質である項5に記載の蓄電デバイス。
本発明の負極保護膜は、リチウム塩化合物を含有し、
プレス前の負極保護膜の膜厚を100%として、温度25℃、圧力1MPaで10分間プレスした時の膜厚変化率(X1)が1~20%であり、プレス圧解除後に10分間放置した時の膜厚変化率(X2)が-1~5%である。本発明において、膜厚変化率とは、より具体的には、膜厚減少率である。すなわち、プレス前の負極保護膜の膜厚を100%(基準)とした場合に、当該負極保護膜を、温度25℃、圧力1MPaで10分間プレスした直後の負極保護膜の膜厚減少率が1~20%(負極保護膜が80~99%となる)である。さらに、プレス前の負極保護膜の膜厚を100%(基準)とした場合に、前記のプレスによる圧力を解除し、温度25℃、大気圧中で10分間静置した時の負極保護膜の膜厚減少率が-1~5%(負極保護膜が95%~101%となる)である。本発明の負極保護膜において、前記の膜厚変化率(X1)及び膜厚変化率(X2)は、例えば、後述の可塑剤及び後述の架橋助剤の配合割合によって、好適に調整することができる。
市販品から入手可能な化合物としては、例えば、プロピレンオキシド、ブチレンオキシド、メチルグリシジルエーテル、エチルグリシジルエーテル、ブチルグリシジルエーテル、t-ブチルグリシジルエーテル、ベンジルグリシジルエーテル、1,2-エポキシドデカン、1,2-エポキシオクタン、1,2-エポキシヘプタン、2-エチルヘキシルグリシジルエーテル、1,2-エポキシデカン、1,2-エポキシへキサン、グリシジルフェニルエーテル、1,2-エポキシペンタン、グリシジルイソプロピルエーテルなどが使用できる。これら市販品のなかでは、プロピレンオキシド、ブチレンオキシド、メチルグリシジルエーテル、エチルグリシジルエーテル、ブチルグリシジルエーテル、グリシジルイソプロピルエーテルが好ましく、プロピレンオキシド、ブチレンオキシド、メチルグリシジルエーテル、エチルグリシジルエーテルが特に好ましい。
合成によって得られる式(2)で表される単量体では、Rは-CH2O(CR1R2R3)が好ましく、R1、R2、R3の少なくとも一つが-CH2O(CH2CH2O)nR4であることが好ましい。R4は炭素数1~6のアルキル基が好ましく、炭素数1~4のアルキル基がより好ましい。nは0~6が好ましく、0~4がより好ましい。
式(1)の単量体に由来する構成単位は30モル%以上有することが好ましく、45モル%以上有することがより好ましく、60モル%以上有することが特に好ましく、100モル%以下有することが好ましく、96モル%以下有することがより好ましく、93.5モル%以下有することが特に好ましい。
式(2)の単量体に由来する構成単位は0モル%以上であってよく、3モル%以上であってよく、5モル%以上であってよく、70モル%以下であってよく、59モル%以下であってよく、39モル%以下であってよい。
式(3)の単量体に由来する構成単位は0モル%以上であってよく、1モル%以上であってよく、1.5モル%以上であってよく、2モル%以上であってよく、3モル%以上であってよく、20モル%以下であってよく、15モル%以下であってよく、12モル%以下であってよい。
有機フィラーの具体例として、アクリル系樹脂(ポリメタクリル酸メチル等)、スチレン系樹脂、フッ素系樹脂、ウレタン系樹脂等、ポリオレフィン系樹脂、スチレン-ブタジエン共重合体、スチレン-メタクリル酸メチル共重合体、ポリアルキレンオキシド(ポリエチレンオキシド等)、が挙げられる。これらのフィラーは、それぞれ単独でまたは二種類以上を組み合わせて使用することができる。
X1(%)=[(A1-A2)/A1]×100
プレス前の負極保護膜の膜厚:A1
温度25℃、圧力1MPaで10分間プレスした時の膜厚:A2
温度25℃、圧力1MPaで10分間プレスした時の膜厚変化率:X1
X2(%)=[(A1-A3)/A1]×100
プレス前の負極保護膜の膜厚:A1
温度25℃、圧力1MPaで10分間プレスし、プレス圧解除後に10分間放置した時の膜厚:A3
温度25℃、圧力1MPaで10分間プレスし、プレス圧解除後に10分間放置した時の膜厚の変化率:X2
負極保護膜用組成物に用いられるポリマーとしては、「1.負極保護膜」の項で説明したポリマーを用いることができる。
本発明の蓄電デバイスは、正極、電解質、「1.負極保護膜」の項で記載した負極保護膜、負極を備える。負極保護膜は負極と電解質との間に介在することを特徴としている。負極保護膜は、負極及び電解質それぞれと接触していることが好ましい。また、本発明においては、負極表面に負極保護膜を積層して負極保護膜付き負極とし、これを蓄電デバイスに適用してもよい。また、電解質表面に負極保護膜を積層し、負極保護膜が負極側に位置するようにして電解質と負極とを配置することで、負極保護膜を蓄電デバイスに適用することもできる。
式中、Mは、B、Zn、Sn、Si、Cu、Ga、Sb、Al及びGeから選択される元素を示す。なかでも、B、Sn、Si、Al、Geが好ましく、Sn、Al、Geがより好ましい。Aは、I、Br、Cl、Fを示し、I、Brが好ましく、Iが特に好ましい。a~eは各元素の組成比を示し、a:b:c:d:eは1~12:0~1:1:2~12:0~5を満たす。aはさらに、1~9が好ましく、1.5~4がより好ましい。bは0~0.5が好ましい。dはさらに、3~7が好ましく、3.25~4.5がより好ましい。eはさらに、0~3が好ましく、0~2がより好ましい。
〔組成モル比率〕
1H-NMRスペクトルにより組成単位に由来するシグナル強度比から求めた。
〔重量平均分子量〕
ゲルパーミエーションクロマトグラフィー(GPC)測定を行い、標準ポリスチレン換算により重量平均分子量を算出した。GPC測定は(株)島津製作所製RID-6A、昭和電工(株)製ショウデックスKD-807、KD-806、KD-806MおよびKD-803カラム、および溶媒にDMFを用いて60℃で行った。
撹拌機、温度計及び蒸留装置を備えた3つ口フラスコにトリブチル錫クロライド10g及びトリブチルホスフェート35gを入れ、窒素気流下に撹拌しながら250℃で20分間加熱して留出物を留去させ残留物として固体状の縮合物質を得た。以下の重合例で重合触媒として用いた。
内容量3Lのガラス製4つ口フラスコの内部を窒素置換し、これに重合触媒として触媒の合成例で示した縮合物質1gと水分10ppm以下に調整したグリシジルエーテル化合物(a):
重合例1の仕込みにおいてグリシジルエーテル化合物(a)130g、n-ブタノール0.13g及び溶媒としてn-ヘキサン1000gを仕込み、化合物(a)の重合率をガスクロマトグラフィーで追跡しながら、エチレンオキシド135gを逐次添加した。このときの重合温度は20℃とし、10時間反応を行った。重合反応はメタノールを1mL加え反応を停止した。デカンテーションによりポリマーを取り出した後、常圧下40℃で24時間、更に減圧下45℃で10時間乾燥してポリマー220gを得た。得られたポリマーのモル比率はエチレンオキシド/ジエチレングリコールメチルグリシジルエーテル=80/20モル%であり、重量平均分子量180万)
(1)負極活物質として人造黒鉛(粒径10μm)100質量部に、導電助剤として気相成長炭素繊維(VGCF)2質量部、バインダーとしてスチレン-ブタジエンゴム(SBR)3質量部、増粘剤としてカルボキシメチルセルロースのナトリウム塩 2質量部を加え、さらにスラリーの固形分濃度が35質量%となるように水を加えて、十分に混合して負極用スラリーを得た。得られた負極スラリーを厚さ16.5μmの銅集電体上にダイコーターを用いて塗布し、100℃で12時間以上乾繰後、ロールプレス機にてプレスを行い、厚さ30μmの無機固体電解質二次電池用負極を作製した(目付量4.0mg/cm2、負極密度1.1g/cm3、空隙率26%)
負極保護膜用組成物1の作製
ポリマーとしてエチレンオキシド/ジエチレングリコールメチルグリシジルエーテル/アリルグリシジルエーテル=80/17/3モル%三元共重合体(重量平均分子量150万)100質量部、リチウム塩化合物としてLiN(CF3SO2)2(略号:LiTFSI)116質量部、可塑剤としてテトラエチレングリコールジメチルエーテル(テトラグライム)200質量部、架橋助剤としてトリメチロールプロパントリメタクリレート(略号:TMPTMA)40質量部、ラジカル開始剤としてベンゾフェノン3質量部を、塗工溶媒としてエチレングリコールジメチルエーテル(モノグライム)700質量部に完全に溶解させた負極保護膜用組成物1を作製した。
アルゴングローブボックス内で、負極の前駆体上に負極保護膜用組成物1を滴下塗工した。その後、10分間室温で乾燥したのち、真空下50℃で1時間溶媒を除去した。次いで、アルゴングローブボックス内でUV照射1J/cm2による架橋を行い、厚み15μmの負極保護膜1が積層した負極1(負極保護膜付き負極)を作製した。
負極保護膜用組成物2の作製
可塑剤の種類をトリエチレングリコールジメチルエーテル(トリグライム)に変えた以外は負極保護膜用組成物1と同様にして、負極保護膜用組成物2を作製した。
負極保護膜用組成物1を負極保護膜用組成物2に変えた以外は実施例1と同様にして、厚み15μmの負極保護膜2が積層した負極2(負極保護膜付き負極)を作製した。
負極保護膜用組成物3の作製
更にナノシリカ(アドマテックス製、粒径0.2~0.4μm)20質量部を加えた以外は負極保護用組成物1と同様にして、負極保護用組成物3を作製した。
負極保護膜用組成物1を負極保護膜用組成物3に変えた以外は実施例1と同様にして、厚み15μmの負極保護膜3が積層した負極3(負極保護膜付き負極)を作製した。
負極保護膜用組成物4の作製
LiTFSIの量を150質量部、テトラグライムの量を280質量部に変えた以外は負極保護用組成物1と同様にして、負極保護膜用組成物4を作製した。
負極保護膜用組成物1を負極保護膜用組成物4に変えた以外は実施例1と同様にして、厚み15μmの負極保護膜4が積層した負極4(負極保護膜付き負極)を作製した。
負極保護膜用組成物5の作製
LiTFSIの量を160質量部、テトラグライムの量を300質量部に変えた以外は負極保護用組成物1と同様にして、負極保護膜用組成物5を作製した。
負極保護膜用組成物1を負極保護膜用組成物5に変えた以外は実施例1と同様にして、厚み15μmの負極保護膜5が積層した負極5(負極保護膜付き負極)を作製した。
保護膜が形成された負極の作製
負極保護膜用組成物1を用いて実施例1と同様にして、厚み0.5μmの負極保護膜6が積層した負極6(負極保護膜付き負極)を作製した。
保護膜が形成された負極の作製
負極保護膜用組成物1を用いて実施例1と同様にして、厚み30μmの負極保護膜7が積層した負極7(負極保護膜付き負極)を作製した。
負極保護膜用組成物6の作製
LiTFSIの量を36質量部、TMPTMAの量を5質量部に変えて、更に可塑剤を用いないこと以外は負極保護膜用組成物1と同様にして、負極保護膜用組成物6を作製した。
負極保護膜用組成物1を負極保護膜用組成物6に変えた以外は実施例1と同様にして、厚み15μmの負極保護膜8が積層した負極8(負極保護膜付き負極)を作製した。
負極保護膜用組成物7の作製
LiTFSIの量を180質量部、テトラグライムの量を400質量部に変えた以外は負極保護膜用組成物1と同様にして、負極保護膜用組成物7を作製した。
負極保護膜用組成物1を負極保護膜用組成物7に変えた以外は実施例1と同様にして、厚み15μmの負極保護膜9が積層した負極9(負極保護膜付き負極)を作製した。
負極保護膜用組成物8の作製
ポリマーの量を10質量部、LiTFSIの量を75質量部、TMPTMAの量を10質量部に変えた以外は負極保護膜用組成物1と同様にして、負極保護膜用組成物8を作製した。
負極保護膜用組成物1を負極保護膜用組成物8に変えた以外は実施例1と同様にして、厚み15μmの負極保護膜10が積層した負極10を作製した。
負極保護膜1~10のプレス試験は、負極1~10をサンプルとして動的粘弾性試験機(ユービーエム社製動的粘弾性測定装置Rheogel-E)を用いて、サンプルシートの厚み方向をプレスするように、25℃で圧力1MPaを10分間掛けて、そのときの厚みを測定し、圧力を解除後10分間放置したときの厚みを測定し、以下の式により膜厚変化率を算出した。結果を表1に示す。
X1(%)=[(A1-A2)/A1]×100
プレス前の負極保護膜の膜厚:A1
温度25℃、圧力1MPaで10分間プレスした時の膜厚:A2
温度25℃、圧力1MPaで10分間プレスした時の膜厚変化率(表内では「プレス時厚み変化率」と記載する):X1
X2(%)=[(A1-A3)/A1]×100
プレス前の負極保護膜の膜厚:A1
温度25℃、圧力1MPaで10分間プレスし、プレス圧解除後に10分間放置した時の膜厚:A3
温度25℃、圧力1MPaで10分間プレスし、プレス圧解除後に10分間放置した時の膜厚の変化率(表内では「試験前後厚み変化率」と記載する):X2
保護膜1~10のイオン伝導度の測定は、負極1~10をサンプルとして動的粘弾性試験機(アメテックサイエンスインスツルメンツ社製ポテンショスタットPMC-1000)を用いて、25℃で行い、負極1~10をSUS製の電極ではさみ、電圧 30mV、周波数範囲 10Hz~10MHzの交流法を用い、複素インピーダンス法により保護膜のバルク抵抗から保護膜のイオン伝導度を算出した。
(1)正極活物質としてNCM(LiNi0.5Co0.2Mn0.3O2)100質量部に、導電助剤としてアセチレンブラック3質量部、黒鉛3質量部、バインダーとしてポリビニリデンフロライド(PVdF)3質量部を加え、さらにスラリーの固形分濃度が35質量%となるようにNMP溶液中に加えて、十分に混合して正極用スラリーを得た。得られた正極スラリーを厚さ20μmのアルミ集電体上にダイコーターを用いて塗布し、100℃で12時間以上乾繰後、ロールプレス機にてプレスを行い、厚さ18μmの正極の前駆体を作製した(目付量 6.0mg/cm2、正極密度 3.0g/cm3、空隙率 26%)。
アルゴングローブボックス内において、保護膜が形成された負極の作製例 実施例1~7および比較例1~3で得た負極、正極の作製例で得た正極、無機固体電解質としてLi7La3Zr2O12(膜厚500μm)を用いて、正極、無機固体電解質、負極の順に積層後、カシめ、試験用2032型コイン電池を製造した。
作製した電池の評価としては充放電装置を用いて充放電試験を行い、充電放電3サイクル目の放電容量および3サイクル目の放電容量に対する50サイクル目の放電容量の維持率を求めた。充放電試験条件は、0.1C(10時間率)に相当する電流で4.2VまでCCCV充電(0.01Cカット)後、0.1Cに相当する電流で、2.5VまでCCCV放電(0.01Cカット)を行った。試験温度は60℃環境とした。結果を表1に示す。
Claims (6)
- リチウム塩化合物を含有する負極保護膜であって、
プレス前の負極保護膜の膜厚を100%として、温度25℃、圧力1MPaで10分間プレスした時の膜厚変化率が1~20%であり、プレス圧解除後に10分間放置した時の膜厚変化率が-1~5%である負極保護膜。 - 25℃におけるイオン伝導率が0.1~10mS/cmである請求項1に記載の負極保護膜。
- 前記負極保護膜は、温度25℃、圧力1MPaで10分間プレスした時の膜厚変化率(X1)と温度25℃、圧力1MPaで10分間プレスし、プレス圧解除後に10分間放置した時の膜厚の変化率:(X2)がX1>X2の関係である、請求項1または2に記載の負極保護膜。
- 負極と、前記負極表面に積層された請求項1~3のいずれか1項に記載の負極保護膜と、を備える、負極保護膜付き負極。
- 正極、電解質、請求項1~3のいずれか1項に記載の負極保護膜、及び負極を含有する蓄電デバイス。
- 電解質が固体電解質である請求項5に記載の蓄電デバイス。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020237020023A KR20230163349A (ko) | 2021-03-30 | 2022-03-18 | 음극 보호막 |
JP2023510998A JPWO2022210060A1 (ja) | 2021-03-30 | 2022-03-18 | |
CN202280011742.7A CN116868435A (zh) | 2021-03-30 | 2022-03-18 | 负极保护膜 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-057344 | 2021-03-30 | ||
JP2021057344 | 2021-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022210060A1 true WO2022210060A1 (ja) | 2022-10-06 |
Family
ID=83455229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/012898 WO2022210060A1 (ja) | 2021-03-30 | 2022-03-18 | 負極保護膜 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPWO2022210060A1 (ja) |
KR (1) | KR20230163349A (ja) |
CN (1) | CN116868435A (ja) |
WO (1) | WO2022210060A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07220759A (ja) * | 1994-01-31 | 1995-08-18 | Sony Corp | 非水電解液二次電池 |
WO2011036797A1 (ja) * | 2009-09-28 | 2011-03-31 | トヨタ自動車株式会社 | リチウム二次電池及びその製造方法 |
JP2013125750A (ja) * | 2011-12-13 | 2013-06-24 | Samsung Electronics Co Ltd | 保護負極、これを含むリチウム空気電池及びこれを含む全固体電池 |
JP2014026806A (ja) * | 2012-07-26 | 2014-02-06 | Kojima Press Industry Co Ltd | リチウムイオン二次電池及びその製造方法並びに製造装置 |
WO2014188987A1 (ja) * | 2013-05-24 | 2014-11-27 | Jsr株式会社 | 蓄電デバイス用組成物、蓄電デバイス用スラリー、蓄電デバイス用電極、蓄電デバイス用セパレーターおよび蓄電デバイス |
JP2016058282A (ja) * | 2014-09-10 | 2016-04-21 | 株式会社東芝 | 非水電解質電池 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7478508B2 (ja) | 2018-11-26 | 2024-05-07 | 株式会社大阪ソーダ | 無機固体電解質二次電池 |
-
2022
- 2022-03-18 CN CN202280011742.7A patent/CN116868435A/zh active Pending
- 2022-03-18 KR KR1020237020023A patent/KR20230163349A/ko unknown
- 2022-03-18 JP JP2023510998A patent/JPWO2022210060A1/ja active Pending
- 2022-03-18 WO PCT/JP2022/012898 patent/WO2022210060A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07220759A (ja) * | 1994-01-31 | 1995-08-18 | Sony Corp | 非水電解液二次電池 |
WO2011036797A1 (ja) * | 2009-09-28 | 2011-03-31 | トヨタ自動車株式会社 | リチウム二次電池及びその製造方法 |
JP2013125750A (ja) * | 2011-12-13 | 2013-06-24 | Samsung Electronics Co Ltd | 保護負極、これを含むリチウム空気電池及びこれを含む全固体電池 |
JP2014026806A (ja) * | 2012-07-26 | 2014-02-06 | Kojima Press Industry Co Ltd | リチウムイオン二次電池及びその製造方法並びに製造装置 |
WO2014188987A1 (ja) * | 2013-05-24 | 2014-11-27 | Jsr株式会社 | 蓄電デバイス用組成物、蓄電デバイス用スラリー、蓄電デバイス用電極、蓄電デバイス用セパレーターおよび蓄電デバイス |
JP2016058282A (ja) * | 2014-09-10 | 2016-04-21 | 株式会社東芝 | 非水電解質電池 |
Also Published As
Publication number | Publication date |
---|---|
KR20230163349A (ko) | 2023-11-30 |
CN116868435A (zh) | 2023-10-10 |
JPWO2022210060A1 (ja) | 2022-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3655443B2 (ja) | リチウム電池 | |
EP3809510A1 (en) | Solid electrolyte membrane and all-solid-state battery comprising same | |
KR20160029599A (ko) | 유무기 실리콘 구조체 함유 블록 공중합체, 이를 포함하는 전해질, 및 상기 전해질을 포함하는 리튬전지 | |
JP6246019B2 (ja) | 正極および非水電解質二次電池 | |
CN110998953B (zh) | 固体电解质组合物、含固体电解质的片材及全固态二次电池、以及含固体电解质的片材及全固态二次电池的制造方法 | |
KR102425398B1 (ko) | 전고체 전지용 바인더 조성물, 전고체 전지용 슬러리 조성물, 전고체 전지용 전극, 및 전고체 전지 | |
CN111201660A (zh) | 固体电解质组合物、含固体电解质的片材、全固态二次电池用电极片及全固态二次电池、以及含固体电解质的片材及全固态二次电池的制造方法 | |
CN113273010A (zh) | 复合固体电解质及复合固体电解质二次电池 | |
CN110945702B (zh) | 固体电解质组合物、含固体电解质的片材及全固态二次电池、以及后两者的制造方法 | |
CN111213213B (zh) | 固体电解质组合物、含固体电解质的片材及全固态二次电池、以及含固体电解质的片材及全固态二次电池的制造方法 | |
WO2016145341A1 (en) | Crosslinked polymeric battery materials | |
JP5326575B2 (ja) | ポリラジカル化合物−導電性物質複合体の製造方法 | |
CN112042033A (zh) | 固体电解质组合物、全固态二次电池用片材、全固态二次电池用电极片及全固态二次电池、以及全固态二次电池用片材及全固态二次电池的制造方法 | |
JP5517887B2 (ja) | 非水電解質二次電池 | |
CN112602214A (zh) | 全固体二次电池用粘结剂组合物、全固体二次电池电极复合材料层用浆料组合物、全固体二次电池固体电解质层用浆料组合物、全固体二次电池用电极、全固体二次电池用固体电解质层以及全固体二次电池 | |
JP2022155549A (ja) | 蓄電デバイスおよび負極保護膜用コーティング液 | |
Nguyen et al. | Enhanced Performance of Lithium Polymer Batteries Based on the Nickel-Rich LiNi0. 8Mn0. 1Co0. 1O2 Cathode Material and Dual Salts | |
JP5934532B2 (ja) | 非水電解質二次電池 | |
WO2022210060A1 (ja) | 負極保護膜 | |
JP7478508B2 (ja) | 無機固体電解質二次電池 | |
CN115917818A (zh) | 全固态二次电池用片材及全固态二次电池的制造方法、以及全固态二次电池用片材及全固态二次电池 | |
JP5959089B2 (ja) | 非水電解質二次電池 | |
WO2024135777A1 (ja) | ポリマー電解質及び二次電池 | |
WO2024111618A1 (ja) | ポリマー電解質及び二次電池 | |
JP7400729B2 (ja) | 無機固体電解質二次電池用電極、および無機固体電解質二次電池 |
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: 22780275 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280011742.7 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023510998 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22780275 Country of ref document: EP Kind code of ref document: A1 |