JP2022074127A - グラフトコポリマー及びその使用 - Google Patents
グラフトコポリマー及びその使用 Download PDFInfo
- Publication number
- JP2022074127A JP2022074127A JP2021177766A JP2021177766A JP2022074127A JP 2022074127 A JP2022074127 A JP 2022074127A JP 2021177766 A JP2021177766 A JP 2021177766A JP 2021177766 A JP2021177766 A JP 2021177766A JP 2022074127 A JP2022074127 A JP 2022074127A
- Authority
- JP
- Japan
- Prior art keywords
- meth
- polyvinyl alcohol
- acrylamide
- graft copolymer
- monomer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920000578 graft copolymer Polymers 0.000 title claims abstract description 61
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 94
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 92
- 239000000178 monomer Substances 0.000 claims abstract description 72
- 239000000203 mixture Substances 0.000 claims abstract description 51
- 239000011230 binding agent Substances 0.000 claims abstract description 47
- 239000011267 electrode slurry Substances 0.000 claims abstract description 32
- 150000001408 amides Chemical class 0.000 claims abstract description 20
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 20
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 16
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims abstract description 16
- 239000011737 fluorine Substances 0.000 claims abstract description 16
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 43
- -1 monoalkylamino Chemical group 0.000 claims description 25
- 125000000217 alkyl group Chemical group 0.000 claims description 22
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims description 21
- 125000003118 aryl group Chemical group 0.000 claims description 18
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- 125000001153 fluoro group Chemical group F* 0.000 claims description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 9
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 9
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 7
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 125000004663 dialkyl amino group Chemical group 0.000 claims description 5
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005977 Ethylene Substances 0.000 claims description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 4
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000000908 ammonium hydroxide Substances 0.000 claims description 3
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 2
- WROUWQQRXUBECT-UHFFFAOYSA-N 2-ethylacrylic acid Chemical compound CCC(=C)C(O)=O WROUWQQRXUBECT-UHFFFAOYSA-N 0.000 claims description 2
- CRPNZBHOACFXED-UHFFFAOYSA-N 3-oxopent-4-enylcarbamic acid Chemical compound OC(=O)NCCC(=O)C=C CRPNZBHOACFXED-UHFFFAOYSA-N 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- 125000003158 alcohol group Chemical group 0.000 claims description 2
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 claims description 2
- 239000001530 fumaric acid Substances 0.000 claims description 2
- LDHQCZJRKDOVOX-IHWYPQMZSA-N isocrotonic acid Chemical compound C\C=C/C(O)=O LDHQCZJRKDOVOX-IHWYPQMZSA-N 0.000 claims description 2
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 claims description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 2
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 claims description 2
- CFVZILWIXKITDD-UHFFFAOYSA-N 2-acetyloxyprop-2-enoic acid Chemical compound CC(=O)OC(=C)C(O)=O CFVZILWIXKITDD-UHFFFAOYSA-N 0.000 claims 1
- 239000007773 negative electrode material Substances 0.000 abstract description 26
- 239000000853 adhesive Substances 0.000 abstract description 13
- 230000001070 adhesive effect Effects 0.000 abstract description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052710 silicon Inorganic materials 0.000 abstract description 10
- 239000010703 silicon Substances 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 abstract description 9
- 238000000576 coating method Methods 0.000 abstract description 9
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 238000000034 method Methods 0.000 description 15
- 238000002360 preparation method Methods 0.000 description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 14
- 239000002210 silicon-based material Substances 0.000 description 14
- 229920003048 styrene butadiene rubber Polymers 0.000 description 14
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 13
- 239000002174 Styrene-butadiene Substances 0.000 description 13
- 239000001768 carboxy methyl cellulose Substances 0.000 description 12
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 12
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 11
- 229910001416 lithium ion Inorganic materials 0.000 description 11
- 239000007864 aqueous solution Substances 0.000 description 10
- 125000004432 carbon atom Chemical group C* 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 230000002829 reductive effect Effects 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 8
- 239000012736 aqueous medium Substances 0.000 description 8
- 229910002804 graphite Inorganic materials 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 239000004020 conductor Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 150000007942 carboxylates Chemical class 0.000 description 6
- 239000011889 copper foil Substances 0.000 description 6
- 239000007772 electrode material Substances 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 5
- 230000008602 contraction Effects 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 5
- 239000002033 PVDF binder Substances 0.000 description 4
- 239000011149 active material Substances 0.000 description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 125000003709 fluoroalkyl group Chemical group 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 125000004206 2,2,2-trifluoroethyl group Chemical group [H]C([H])(*)C(F)(F)F 0.000 description 3
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 3
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 125000003368 amide group Chemical group 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000002427 irreversible effect Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- SBLRHMKNNHXPHG-UHFFFAOYSA-N 4-fluoro-1,3-dioxolan-2-one Chemical compound FC1COC(=O)O1 SBLRHMKNNHXPHG-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- DMEGYFMYUHOHGS-UHFFFAOYSA-N cycloheptane Chemical compound C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 2
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 229910021385 hard carbon Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 125000001624 naphthyl group Chemical group 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000011871 silicon-based negative electrode active material Substances 0.000 description 2
- 229910021384 soft carbon Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 2
- DTGKSKDOIYIVQL-WEDXCCLWSA-N (+)-borneol Chemical group C1C[C@@]2(C)[C@@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-WEDXCCLWSA-N 0.000 description 1
- FGGRLKWCMJMSKS-UHFFFAOYSA-N (2-phenoxy-2-phenylethyl) prop-2-enoate Chemical compound C=1C=CC=CC=1C(COC(=O)C=C)OC1=CC=CC=C1 FGGRLKWCMJMSKS-UHFFFAOYSA-N 0.000 description 1
- YBYIRNPNPLQARY-UHFFFAOYSA-N 1H-indene Natural products C1=CC=C2CC=CC2=C1 YBYIRNPNPLQARY-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
- RZVINYQDSSQUKO-UHFFFAOYSA-N 2-phenoxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC1=CC=CC=C1 RZVINYQDSSQUKO-UHFFFAOYSA-N 0.000 description 1
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- CYUZOYPRAQASLN-UHFFFAOYSA-N 3-prop-2-enoyloxypropanoic acid Chemical compound OC(=O)CCOC(=O)C=C CYUZOYPRAQASLN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000285023 Formosa Species 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 1
- 239000012425 OXONE® Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910004283 SiO 4 Inorganic materials 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- ZVLDJSZFKQJMKD-UHFFFAOYSA-N [Li].[Si] Chemical compound [Li].[Si] ZVLDJSZFKQJMKD-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000005428 anthryl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C(*)=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 1
- 125000004104 aryloxy group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- DSSYKIVIOFKYAU-UHFFFAOYSA-N camphor Chemical compound C1CC2(C)C(=O)CC1C2(C)C DSSYKIVIOFKYAU-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000003869 coulometry Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- ZZVUWRFHKOJYTH-UHFFFAOYSA-N diphenhydramine Chemical group C=1C=CC=CC=1C(OCCN(C)C)C1=CC=CC=C1 ZZVUWRFHKOJYTH-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- MHLPKAGDPWUOOT-UHFFFAOYSA-N housane Chemical compound C1CC2CC21 MHLPKAGDPWUOOT-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 238000006138 lithiation reaction Methods 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 125000002950 monocyclic group Chemical group 0.000 description 1
- UTSYWKJYFPPRAP-UHFFFAOYSA-N n-(butoxymethyl)prop-2-enamide Chemical compound CCCCOCNC(=O)C=C UTSYWKJYFPPRAP-UHFFFAOYSA-N 0.000 description 1
- ULYOZOPEFCQZHH-UHFFFAOYSA-N n-(methoxymethyl)prop-2-enamide Chemical compound COCNC(=O)C=C ULYOZOPEFCQZHH-UHFFFAOYSA-N 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- CBFCDTFDPHXCNY-UHFFFAOYSA-N octyldodecane Natural products CCCCCCCCCCCCCCCCCCCC CBFCDTFDPHXCNY-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 125000005007 perfluorooctyl group Chemical group FC(C(C(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)* 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- 125000000914 phenoxymethylpenicillanyl group Chemical group CC1(S[C@H]2N([C@H]1C(=O)*)C([C@H]2NC(COC2=CC=CC=C2)=O)=O)C 0.000 description 1
- 125000004344 phenylpropyl group Chemical group 0.000 description 1
- 208000011130 pituitary stalk interruption syndrome Diseases 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 125000005592 polycycloalkyl group Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- OKBMCNHOEMXPTM-UHFFFAOYSA-M potassium peroxymonosulfate Chemical compound [K+].OOS([O-])(=O)=O OKBMCNHOEMXPTM-UHFFFAOYSA-M 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1806—C6-(meth)acrylate, e.g. (cyclo)hexyl (meth)acrylate or phenyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/22—Esters containing halogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F261/00—Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00
- C08F261/02—Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00 on to polymers of unsaturated alcohols
- C08F261/04—Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00 on to polymers of unsaturated alcohols on to polymers of vinyl alcohol
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
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Abstract
Description
(a)フッ素含有エチレン性不飽和モノマー;
(b)エチレン性不飽和カルボン酸モノマー;及び
(c)エチレン性不飽和アミドモノマー;
に由来する構造単位を含む分岐鎖を含む。
本発明のポリビニルアルコールグラフトコポリマーは、(主鎖としての)ポリビニルアルコールとフッ素含有エチレン性不飽和モノマー、エチレン性不飽和カルボン酸モノマー、エチレン性不飽和アミドモノマー、及び他の任意選択のモノマーとのグラフト共重合により得られる。
R1は、H、C1~C4アルキル、又は1つ又は複数のフッ素原子で置換されたC1~C4アルキルであり;
R2は、H、C1~C12アルキル、1つ又は複数のフッ素原子で置換されたC1~C12アルキル、アリール、1つ又は複数のフッ素原子で置換されたアリール、アラルキル、又は1つ又は複数のフッ素原子で置換されたアラルキルである。
R6は、H、C1~C10アルキル、アリール、アラルキル、シクロアルキル、
R7は、H又はC1~C5アルキルであり、前記C1~C5アルキルは、非置換であるか、又はアミノ、モノアルキルアミノ、又はジアルキルアミノで置換されていてもよく;
R8は、C1~C10アルキルである
本発明のポリビニルアルコールグラフトコポリマーは、任意の好適な方法により調製され得る。本発明の一実施形態において、ポリビニルアルコールグラフトコポリマーは、以下の方法によって調製され得る:
(1)溶媒にポリビニルアルコールを溶解して、ポリビニルアルコール溶液を得る。
(2)任意選択で、工程(1)においてポリビニルアルコール溶液中に不活性ガスを導入して、溶液中の酸素を取り除く。
(3)フッ素含有エチレン性不飽和モノマー、エチレン性不飽和カルボン酸モノマー、エチレン性不飽和アミドモノマー、任意選択でエチレン性不飽和カルボキシレートモノマー又は他のモノマー、及び開始剤を工程(2)で得られた溶液中に加える。
(4)重合のために加熱して、フッ素含有エチレン性不飽和モノマー、エチレン性不飽和カルボン酸モノマー、エチレン性不飽和アミドモノマー、及び任意選択でエチレン性不飽和カルボキシレートモノマーをポリビニルアルコールに共有結合によってグラフトして、ポリビニルアルコールグラフトコポリマーを得る。
本発明のポリビニルアルコールグラフトコポリマーは、水性媒体との十分な適合性を有し、水性媒体と配合して、水性バインダー組成物を形成することができる。溶媒はポリビニルアルコールグラフトコポリマーの調整のプロセスからの溶媒であってもよく、又は任意選択で調製が完了した後に粘度を調整するために加えられてもよい。前述の水性媒体は、上述に記載されたとおりである。
本発明は、活性材料、導電材料、及び本発明のポリビニルアルコールグラフトコポリマー(バインダーとして)を含む、電極スラリー組成物も提供する。
ポリビニルアルコールグラフトコポリマーの調製
調製例1から5:ポリビニルアルコール(以下、PVAと呼ぶ)GOHSENOL GL-05(日本合成化学工業株式会社)を7200mLの水に溶解して、十分な攪拌後、均一で、透明で、粘性のある、ポリビニルアルコール水性溶液を得た。窒素ガスを約60分間連続的に導入して水性溶液中の酸素を取り除いた。次に、2,2,2-トリフルオロエチル(メタ)アクリレート(Sigma-Aldrich、99%の純度)、(メタ)アクリル酸(Sigma-Aldrich、99%の純度)、(メタ)アクリルアミド(Sigma-Aldrich、98%の純度)、ヘキシル(メタ)アクリレート(Sigma-Aldrich、99%の純度)、及び1%の過硫酸ナトリウム水性溶液を加えて、均一混合のために攪拌し、温度を70℃まで上げて4時間連続反応させ、調製例1から5のポリビニルアルコールグラフトコポリマー(以下、グラフトPVAと呼ぶ)を水性バインダー(固形分(solid content)は5.2質量%であった)として得た。各グラフトPVAについて使用した反応物質の量を表1に記録した。
実施例1から7及び比較例1:36.7gのグラフトPVA溶液(固形分:5.2質量%)、56.4gの前処理されたアルカリ性酸化ケイ素/グラファイト負極活性材料(BTR-6002A、BTR New Material Group Co., Ltd.)、及び1.8gのカーボンブラック(Super P、Taiwan Maxwave Co., Ltd.)を分散機を備えたプラネターミキサーに加えて、25℃で均一に攪拌し、適切な量の脱イオン水を加えて粘度を調整し、負極スラリーを調製した。
調製した電極スラリー組成物を、スクレーパーを用いて銅箔(電池用の10μm銅箔、Chang Chun Group)上にコーティングした(コーティング重量:5~7mg/cm2)。100℃で5分間乾燥し、冷間プレスした後、コーティングした銅箔を12mmの直径を有するカッターを用いて円形に切断し、6時間100℃の真空オーブンの中に置き、負極板を得た。
使用した電解液の組成は、2%のエチレンカーボネート(EC)/ジエチルカーボネート(DEC)-ビニレンカーボネート(VC)、8%のフルオロエチレンカーボネート(FEC)、及びリチウムヘキサフルオロホスフェート(Formosa Plastics Group:LE)を含んでいた。セパレーター膜は約20μmの厚みを有するポリプロピレンフィルムであった。
1.細かさ測定
攪拌後、適切な量の水性バインダースラリーを細かさ計(fineness meter)(ブランド:PSIS-303-50)の溝の最深部に滴下した。スクレーパーを細かさ計と垂直に接触させ、最大スケール部分から最小スケール部分に引っ張り、溝中の粒子が顕著に存在する場所を観察した。相当するスケール値(すなわち細かさ)を記録した。
電量カールフィッシャー水分計を試験のために使用した。電極板サンプルを密封されたサンプルボトルの中に入れ、7分間130℃で加熱し、電極板サンプル中の水分を蒸発させた。乾燥ガスを導入して、水蒸気を電解槽に供給し、反応に関与させた。続いて、電気量を電解過程で測定し、水分含有量を決定した。
3M 610テープを使用して、乾燥させた電極板に密着させ、続いて180度引張試験のために張力計(モデル:RX-100、MOGRL Technology Co., Ltd.)を使用した。
電極スラリー組成物を調製した後、その初期粘度を試験した。電極スラリー組成物を室温で一晩静置した後、再度その粘度を試験した。電極スラリー組成物の粘度変化を比較した。「◎」は初期粘度と比較して粘度変化が10%未満であることを表す;「△」は初期粘度と比較して粘度変化が10~20%であることを表す;「X」は初期粘度と比較して粘度変化が20%より大きいことを表す。
7mg/cm2より多いコーティング重量を有する電極板を3mmの円筒形の周りに巻きつけた。巻き戻した後、表面上の割れが無いかを観察した。「◎」は割れが5個よりも少ないことを表す;「△」は5個以上の割れがあることを表す;「X」はコーティングが剥がれ落ちたことを表す。
Arbin Instrumentの充放電機器(モデル:LBT21084)を使用して電池性能を測定した。
充電:0.1Cの定電流を10時間充電するように設定した定電流モード、続いて0.01Vの定電圧を1時間充電するように設定した定電圧モード
放電:0.1Cの電流での10時間の放電
前述の条件下で充放電を3回繰り返し、最初の3サイクルを使用してSEIを形成した。
充電:0.5Cの定電流を2時間充電するように設定した定電流モード、続いて0.01Vの定電圧を1時間充電するように設定した定電圧モード
放電:0.5Cの電流での2時間の放電
比較例1で使用されたグラフトPVAは、エチレン性不飽和アミドモノマーの構造単位を含有していない。比較例では、CMC/SBRをバインダーとして使用している。比較例3では、PAA/SBRをバインダーとして使用している。比較して、実施例1から7で使用されたグラフトPVAは、フッ素含有エチレン性不飽和モノマー、エチレン性不飽和カルボン酸モノマー、及びエチレン性不飽和アミドモノマーで同時にグラフトされている。
Claims (12)
- ポリビニルアルコール主鎖を含む、ポリビニルアルコールグラフトコポリマーであって、以下のモノマー:
(a)フッ素含有エチレン性不飽和モノマー;
(b)エチレン性不飽和カルボン酸モノマー;及び
(c)エチレン性不飽和アミドモノマー;
に由来する構造単位を含む分岐鎖を含む、ポリビニルアルコールグラフトコポリマー。 - 前記エチレン性不飽和カルボン酸モノマーは、(メタ)アクリル酸、マレイン酸、フマル酸、イタコン酸、2-エチルアクリル酸、イソクロトン酸、α-アセトキシアクリル酸、又はβ-トランス-アリールオキシアクリル酸を含む、請求項1に記載のポリビニルアルコールグラフトコポリマー。
- 前記エチレン性不飽和アミドモノマーは、式(3)の構造:
R5は、H又はC1~C4アルキルであり;
R6は、H、C1~C10アルキル、アリール、アラルキル、シクロアルキル、
R7は、H又はC1~C5アルキルであり、前記C1~C5アルキルは、非置換であるか、又はアミノ、モノアルキルアミノ、又はジアルキルアミノで置換されていてもよく;
R8は、C1~C10アルキルである)
を有する、請求項1に記載のポリビニルアルコールグラフトコポリマー。 - 前記エチレン性不飽和アミドモノマーは、(メタ)アクリルアミド、N-メチル(メタ)アクリルアミド、N-エチル(メタ)アクリルアミド、N-n-プロプル(メタ)アクリルアミド、N-イソプロピル(メタ)アクリルアミド、N-n-ブチル(メタ)アクリルアミド、N-sec-ブチル(メタ)アクリルアミド、N-tert-ブチル(メタ)アクリルアミド、N-ヘキシル(メタ)アクリルアミド、N-ベンジル(メタ)アクリルアミド、N-(3-ジメチルアミノプロピル)(メタ)アクリルアミド、N-ヒドロキシメチル(メタ)アクリルアミド、ジアセトン(メタ)アクリルアミド、N-(メトキシメチル)(メタ)アクリルアミド、N-(ブトキシメチル)(メタ)アクリルアミド、N-フェニル(メタ)アクリルアミド、N-(3-メチルフェニル)(メタ)アクリルアミド、N-シクロヘキシル(メタ)アクリルアミド、N-シクロペンチル(メタ)アクリルアミド、N-(メタ)アクリロイルエチルカルバメート、又はこれらの組み合わせを含む、請求項1に記載のポリビニルアルコールグラフトコポリマー。
- ポリビニルアルコールの100質量部に基づいて、前記フッ素含有エチレン性不飽和モノマーの含有量は20質量部以上である、請求項1に記載のポリビニルアルコールグラフトコポリマー。
- ポリビニルアルコールの100質量部に基づいて、前記エチレン性不飽和カルボン酸モノマーの含有量は500質量部から2500質量部である、請求項1に記載のポリビニルアルコールグラフトコポリマー。
- 前記エチレン性不飽和カルボン酸モノマーの前記エチレン性不飽和アミドモノマーに対する質量比は50:1から2:1である、請求項1に記載のポリビニルアルコールグラフトコポリマー。
- 請求項1に記載のポリビニルアルコールグラフトコポリマーを含む、水性バインダー組成物。
- アルカリ化合物をさらに含み、前記アルカリ化合物は、水酸化リチウム、水酸化ナトリウム、水酸化カリウム、水酸化アンモニウム、又はこれらの混合物を含む、請求項10に記載の水性バインダー組成物。
- 請求項1に記載のポリビニルアルコールグラフトコポリマーを含む、電極スラリー組成物。
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