CN110459723A - Battery diaphragm, preparation method thereof and battery with battery diaphragm - Google Patents
Battery diaphragm, preparation method thereof and battery with battery diaphragm Download PDFInfo
- Publication number
- CN110459723A CN110459723A CN201910724639.7A CN201910724639A CN110459723A CN 110459723 A CN110459723 A CN 110459723A CN 201910724639 A CN201910724639 A CN 201910724639A CN 110459723 A CN110459723 A CN 110459723A
- Authority
- CN
- China
- Prior art keywords
- lithium
- battery
- containing compound
- battery diaphragm
- pole piece
- 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.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 105
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 105
- 150000001875 compounds Chemical class 0.000 claims abstract description 57
- 238000000576 coating method Methods 0.000 claims abstract description 45
- 239000011248 coating agent Substances 0.000 claims abstract description 44
- 239000011230 binding agent Substances 0.000 claims abstract description 21
- 239000002002 slurry Substances 0.000 claims description 22
- 239000003792 electrolyte Substances 0.000 claims description 19
- 239000002270 dispersing agent Substances 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- 229920000098 polyolefin Polymers 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 5
- YQNQTEBHHUSESQ-UHFFFAOYSA-N lithium aluminate Chemical compound [Li+].[O-][Al]=O YQNQTEBHHUSESQ-UHFFFAOYSA-N 0.000 claims description 4
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- YNQRWVCLAIUHHI-UHFFFAOYSA-L dilithium;oxalate Chemical compound [Li+].[Li+].[O-]C(=O)C([O-])=O YNQRWVCLAIUHHI-UHFFFAOYSA-L 0.000 claims description 3
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 239000004584 polyacrylic acid Substances 0.000 claims description 3
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 2
- 229910001386 lithium phosphate Inorganic materials 0.000 claims description 2
- 229910052912 lithium silicate Inorganic materials 0.000 claims description 2
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 229910052808 lithium carbonate Inorganic materials 0.000 claims 1
- 239000007774 positive electrode material Substances 0.000 description 14
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 13
- 229910001416 lithium ion Inorganic materials 0.000 description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- -1 polyethylene Polymers 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- 239000007773 negative electrode material Substances 0.000 description 10
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 9
- 239000004743 Polypropylene Substances 0.000 description 8
- 229920001155 polypropylene Polymers 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000005524 ceramic coating Methods 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 239000006258 conductive agent Substances 0.000 description 5
- 239000002562 thickening agent Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 3
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical class COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- FSSPGSAQUIYDCN-UHFFFAOYSA-N 1,3-Propane sultone Chemical compound O=S1(=O)CCCO1 FSSPGSAQUIYDCN-UHFFFAOYSA-N 0.000 description 2
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 239000002253 acid Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011267 electrode slurry Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- GAEKPEKOJKCEMS-UHFFFAOYSA-N gamma-valerolactone Chemical compound CC1CCC(=O)O1 GAEKPEKOJKCEMS-UHFFFAOYSA-N 0.000 description 2
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 1
- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 1
- HMWVNKJRYWXJGS-UHFFFAOYSA-N C(C)(=O)OC=C.[C] Chemical compound C(C)(=O)OC=C.[C] HMWVNKJRYWXJGS-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- 229910010092 LiAlO2 Inorganic materials 0.000 description 1
- 229910013188 LiBOB Inorganic materials 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229910013872 LiPF Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- RJUFJBKOKNCXHH-UHFFFAOYSA-N Methyl propionate Chemical compound CCC(=O)OC RJUFJBKOKNCXHH-UHFFFAOYSA-N 0.000 description 1
- RDHSUTIDSFVNJL-UHFFFAOYSA-N OC(=O)C=C.CCCCCCCCCCCC(O)=O Chemical compound OC(=O)C=C.CCCCCCCCCCCC(O)=O RDHSUTIDSFVNJL-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- OQPHEVHDBFEJRQ-UHFFFAOYSA-N [Li].P(O)(O)(O)=O Chemical compound [Li].P(O)(O)(O)=O OQPHEVHDBFEJRQ-UHFFFAOYSA-N 0.000 description 1
- KFDQGLPGKXUTMZ-UHFFFAOYSA-N [Mn].[Co].[Ni] Chemical compound [Mn].[Co].[Ni] KFDQGLPGKXUTMZ-UHFFFAOYSA-N 0.000 description 1
- 238000003677 abuse test Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 150000005676 cyclic carbonates Chemical class 0.000 description 1
- LRJNNJLCNGFADW-UHFFFAOYSA-N diethyl carbonate;1,3-dioxolan-2-one Chemical compound O=C1OCCO1.CCOC(=O)OCC LRJNNJLCNGFADW-UHFFFAOYSA-N 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 229940113088 dimethylacetamide Drugs 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- ZTOMUSMDRMJOTH-UHFFFAOYSA-N glutaronitrile Chemical compound N#CCCCC#N ZTOMUSMDRMJOTH-UHFFFAOYSA-N 0.000 description 1
- 150000004676 glycans Polymers 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 1
- OVAQODDUFGFVPR-UHFFFAOYSA-N lithium cobalt(2+) dioxido(dioxo)manganese Chemical compound [Li+].[Mn](=O)(=O)([O-])[O-].[Co+2] OVAQODDUFGFVPR-UHFFFAOYSA-N 0.000 description 1
- DEUISMFZZMAAOJ-UHFFFAOYSA-N lithium dihydrogen borate oxalic acid Chemical compound B([O-])(O)O.C(C(=O)O)(=O)O.C(C(=O)O)(=O)O.[Li+] DEUISMFZZMAAOJ-UHFFFAOYSA-N 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical group 0.000 description 1
- JQQCMCDVLAZJHZ-UHFFFAOYSA-N lithium;methanesulfonic acid Chemical compound [Li].CS(O)(=O)=O JQQCMCDVLAZJHZ-UHFFFAOYSA-N 0.000 description 1
- WDGKXRCNMKPDSD-UHFFFAOYSA-N lithium;trifluoromethanesulfonic acid Chemical compound [Li].OS(=O)(=O)C(F)(F)F WDGKXRCNMKPDSD-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 150000004804 polysaccharides Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000010148 water-pollination Effects 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- 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
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a battery diaphragm which comprises a diaphragm body and a lithium-containing coating, wherein the diaphragm body and the lithium-containing coating are arranged in a laminated mode, the lithium-containing coating is provided with a lithium-containing compound and a binding agent, and the mass fraction of the lithium-containing compound in the lithium-containing coating is 80% -98%. The invention also discloses a preparation method of the battery diaphragm. The invention also discloses a battery with the battery diaphragm.
Description
Technical field
The present invention relates to technical field of energy storage, more particularly to a kind of battery diaphragm and preparation method thereof and have this
The battery of battery diaphragm.
Background technique
Now, demand of the people to pure electric automobile and electronic product is growing day by day, using lithium ion battery as the new of representative
Generation electrochemical cell is high with its energy density, voltage is high, have extended cycle life, big multiplying power discharging, self discharge are low, environmentally friendly etc. excellent
Gesture has been widely used in electric car and energy storage field.Electrochemical cell is by anode, cathode, diaphragm, electrolyte
Four big material compositions.Influence electrochemical cell performance major parameter be also more than four kinds of materials.Wherein, diaphragm in addition to play for
Ion (lithium ion in such as lithium ion battery) diffusion provides channel, completely cuts off outside the basic role that positive and negative anodes directly contact, also right
The security performance and electric conductivity of battery have great influence.
It currently, is to carry out ceramic coating processing to the common method that diaphragm is modified.Ceramic coating has excellent height
Warm stability, good hydrophily and liquid retention.Therefore, the diaphragm handled using ceramic coating, the thermal stability of battery are obtained
Performance to raising, wetting electrolytic liquid is improved.However, carrying out ceramic coating coating in membrane surface will affect lithium ion
Diffusion, especially diffusion under conditions of big multiplying power, so that the safety of battery and high rate performance be made to reduce.
Summary of the invention
Based on this, it is necessary to provide that a kind of humectation is strong, battery security and the high battery diaphragm and its system of high rate performance
Preparation Method and battery with the battery diaphragm.
A kind of battery diaphragm, it is described to contain in lithium coating with containing lithium including the septum body being stacked and containing lithium coating
Compound and binder, the lithium-containing compound are 80%~98% in the mass fraction containing in lithium coating.
The lithium-containing compound is selected from lithium zirconate, lithium phosphate, lithium aluminate, lithium fluoride, carbon in one of the embodiments,
Sour lithium, lithium oxalate and lithium metasilicate it is one or more.
The septum body is polyolefins diaphragm in one of the embodiments,.
The polyolefins diaphragm is selected from polyethylene diagrams, polypropylene diaphragm, polyethylene-in one of the embodiments,
One of polypropylene two-layer compound diaphragm, three layers of composite diaphragm of polypropylene-polyethylene-polypropylene and Kynoar diaphragm or
It is a variety of.
The binder is selected from polyacrylic acid, polyacrylamide, polyvinyl alcohol and gathers inclined fluorine in one of the embodiments,
Ethylene it is one or more.
The mass ratio of the lithium-containing compound and the binder is (80~98) in one of the embodiments: (2~
20)。
In one of the embodiments, it is described containing lithium coating with a thickness of 1 μm~10 μm.
The unilateral side or two sides that the septum body is set containing lithium coating in one of the embodiments,.
A kind of preparation method of the battery diaphragm, comprising:
Lithium-containing compound slurry is provided, the lithium-containing compound slurry includes the mixed uniformly lithium-containing compound, institute
State binder and dispersing agent；
The lithium-containing compound slurry is coated in the septum body；And
The diaphragm for being coated with the lithium-containing compound slurry is dried and removes the dispersing agent.
The temperature of the drying is 60 DEG C~95 DEG C in one of the embodiments,.
The lithium-containing compound in the lithium-containing compound slurry and the binder in one of the embodiments,
Gross mass percentage is 20%~50%.
A kind of battery, including anode pole piece, cathode pole piece, battery diaphragm and electrolyte, the battery diaphragm are arranged in institute
It states between anode pole piece and the cathode pole piece and the anode pole piece and the cathode pole piece is isolated, the electrolyte infiltration
The battery diaphragm, the anode pole piece and the cathode pole piece, the battery diaphragm are the battery diaphragm or are institute
The battery diaphragm that the preparation method stated is prepared.
Battery diaphragm of the invention is formed by adding in septum body containing lithium coating, and septum body itself can completely cut off
Electronics simultaneously makes metal ion, as lithium ion passes through.There is preferable close electrolyte property containing the lithium-containing compound in lithium coating, it can
Improve guarantor's liquid measure of battery.Also, relative to the diaphragm of traditional ceramic coating, what lithium-containing compound of the invention was formed contains lithium
Coating makes diaphragm have preferable lithium ion diffusion, can be improved the high rate performance of battery.Lithium-containing compound has height
Heat resistance, can be improved the thermal stability of battery.Therefore, pass through the coating in the surface of septum body progress lithium-containing compound
It is modified, guarantor's liquid measure of battery can be improved to improve the charge and discharge uniformity of battery, improve the cycle performance of battery；It can be improved
The heat resistance of battery is to have improvement result to the safety of battery；Ion-diffusibility can be improved to promote battery high current
Charging and discharging capabilities improve the high rate performance of battery.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the battery diaphragm of one embodiment of the invention；
Fig. 2 is the structural schematic diagram of the battery diaphragm of another embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, by the following examples, it and combines attached
Figure, is further elaborated battery diaphragm of the invention and preparation method thereof and the battery with the battery diaphragm.
It should be appreciated that described herein, specific examples are only used to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1, the embodiment of the present invention provides a kind of battery diaphragm, the septum body 10 including being stacked and contain lithium
Coating 20, described containing having lithium-containing compound and binder in lithium coating 20, the lithium-containing compound contains lithium coating 20 described
In mass fraction be 80%~98%.
The battery diaphragm of the embodiment of the present invention is formed by adding in septum body 10 containing lithium coating 20, septum body 10
Itself it can completely cut off electronics and make metal ion, as lithium ion passes through.Have containing the lithium-containing compound in lithium coating 20 preferable
Guarantor's liquid measure of battery can be improved in close electrolyte property.Also, relative to the diaphragm of traditional ceramic coating, the embodiment of the present invention
Lithium-containing compound formed containing lithium coating 20 make diaphragm have preferable lithium ion diffusion, can be improved battery times
Rate performance.Lithium-containing compound has high heat resistance, can be improved the thermal stability of battery.Therefore, by septum body 10
Surface carry out lithium-containing compound it is coating modified after, can be improved battery guarantors liquid measure thus improve battery charge and discharge it is uniform
Property, improve the cycle performance of battery；The heat resistance of battery can be improved to have improvement result to the safety of battery；Can be improved from
Sub- diffusivity improves the high rate performance of battery to promote battery high current charge-discharge ability.
The main function of diaphragm in the battery is to separate the anode pole piece of battery with cathode pole piece, prevents the two poles of the earth from connecing
Touching and it is short-circuit, furthermore diaphragm also has the function of that electrolyte ion can be made to pass through, and forms the movable passageway of ion, make electrolyte from
Son moves between anode pole piece and cathode pole piece.In one embodiment, the septum body 10 can be polyolefins diaphragm,
Polyolefins diaphragm high mechanical strength, long service life, and there is good electrolyte resistance corrosivity.The polyolefins every
Film can be selected from polyethylene (PE) diaphragm, polypropylene diaphragm, polyethylene-polypropylene (PE/PC) two-layer compound diaphragm, polypropylene-
One of three layers of composite diaphragm of polyethylene-polypropylene (PE/PC/PE) and Kynoar diaphragm are a variety of.
In one embodiment, the lithium-containing compound is inorganic matter containing lithium, and the heat resistance of the inorganic matter containing lithium is stronger, is conducive to
Improve the service life of diaphragm and the security performance of battery.The inorganic matter containing lithium can be selected from lithium zirconate (Li2ZrO3), phosphoric acid
Lithium (Li3PO4), lithium aluminate (LiAlO2), lithium fluoride (LiF), lithium carbonate (Li2CO3), lithium oxalate (Li2C2O4) and lithium metasilicate
(Li2SiO3) it is one or more.
Binder both has bonding 20 component containing lithium coating, i.e., lithium-containing compound is bonded as one to the effect of formula coating,
Also has the function of bonding containing lithium coating 20 and septum body 10.In one embodiment, the binder can be selected from polypropylene
Sour (PAA), polyacrylamide, polyvinyl alcohol (PVA) and Kynoar (PVDF) it is one or more.
In one embodiment, lithium-containing compound is evenly distributed on graininess containing in lithium coating 20.Of lithium-containing compound
The shape of grain can be spherical or random polygon.Lithium-containing compound particle is set as spherical shape and is conducive to lithium-containing compound particle
Containing the accumulation in lithium coating 20.Containing in lithium coating 20, the mass ratio of lithium-containing compound and binder can be (80~98):
(2~20).In the quality than in range, enabling the structural stability containing lithium coating 20 to get well and making lithium-containing compound more preferable
It plays and improves guarantor's liquid measure of battery, improve the heat resistance of battery and improve the effect of ion-diffusibility.
In one embodiment, the overall thickness of the battery diaphragm can be 20 μm~30 μm, the thickness containing lithium coating 20
It can be 1 μm~10 μm.Thickness containing lithium coating 20 can require to carry out adaptability tune according to battery capacity and diaphragm overall thickness
It is whole.
Optionally, the unilateral side or two sides that the septum body 10 is set containing lithium coating 20.It is arranged containing lithium coating 20
It is described to be arranged towards the anode pole piece of battery containing lithium coating 20 at the unilateral side of the septum body 10, it can be with positive pole
Piece surface forms good adhesion effect, improves stability test.Referring to Fig. 2, described can be set containing lithium coating 20 in institute
State the two sides of septum body 10.
The embodiment of the present invention also provides the preparation method of battery diaphragm described in one kind, comprising:
S100, provides lithium-containing compound slurry, and the lithium-containing compound slurry includes mixed uniformly described containing lithiumation conjunction
Object, the binder and dispersing agent；
The lithium-containing compound slurry is coated in the septum body 10 by S200；And
S300, the diaphragm for being coated with the lithium-containing compound slurry are dried and remove the dispersing agent.
In the step s 100, the dispersing agent can for one of ethyl alcohol, acetone and N-Methyl pyrrolidone (NMP) or
It is a variety of.Solid content in lithium-containing compound slurry can be 20%~50%, i.e. the gross mass of lithium-containing compound and binder accounts for
The percentage of lithium-containing compound stock quality is 20%~50%.
In step s 200, coating method of the lithium-containing compound slurry in septum body 10 can be transfer coated, recessed
Version printing coating, dip-coating or extrusion coated.
In step S300, the temperature of the drying can be 60 DEG C~95 DEG C, preferably 75 DEG C~85 DEG C.
In one embodiment, the gross mass of the lithium-containing compound in the lithium-containing compound slurry and the binder
Percentage is 20%~50%.
The embodiment of the present invention also provides a kind of battery with the battery diaphragm, including anode pole piece, cathode pole piece, battery
Diaphragm and electrolyte, the battery diaphragm are arranged between the anode pole piece and the cathode pole piece and by the anode pole pieces
It is isolated with the cathode pole piece, the electrolyte infiltrates the battery diaphragm, the anode pole piece and the cathode pole piece, described
Battery diaphragm is above-mentioned battery diaphragm or is the battery diaphragm that above-mentioned preparation method obtains.
Electrochemical cell can be lithium ion battery etc..
The anode pole piece may include the plus plate current-collecting body and positive electrode material layer being stacked.
There is positive electrode active materials, conductive agent and binder in positive electrode material layer.It preferably, can also include thickener.
Positive electrode material layer can be obtained by the way that the slurry containing positive electrode to be coated on plus plate current-collecting body or heat dissipating layer.
Positive electrode slurry is positive electrode and the pulp-like mixture that volatile organic solvent is mixed to form.Implement one
In example, positive electrode slurry is coated in plus plate current-collecting body surface, is obtained just after drying in vacuum, protective gas or inert gas
Pole pole piece.Drying temperature can be dry (such as 30 DEG C~150 DEG C) for air drying or lower temperature.
The organic solvent, which is selected as, cannot dissolve the positive electrode, not chemically react with the positive electrode,
And the solvent that can be completely removed under lower temperature (such as 30 DEG C~150 DEG C), such as low molecular weight volatile organic solvent, it can
To be selected from N-Methyl pyrrolidone (NMP), methanol, ethyl alcohol, ethylene glycol, propyl alcohol, isopropanol, acetonitrile, acetone, ether, N, N diformazan
Base formamide (DMF), N, one of N dimethyl acetamide (DMAc) and tetrahydrofuran (THF) or more than one.
In one embodiment, electrochemical cell is lithium ion battery, and the positive electrode active materials and electrolyte contain lithium
Ion.The positive electrode active materials can be in cobalt acid lithium, LiFePO4, LiMn2O4 and ternary material, such as nickle cobalt lithium manganate
It is one or more.
In one embodiment, the conductive agent in positive electrode material layer can be selected from active carbon, graphene, carbon nanotube, section's qin
At least one of black, Super P (SP), acetylene black and graphite.Binder in positive electrode material layer can be selected from polyvinylidene fluoride
Alkene (PVDF), butadiene-styrene rubber (SBR), butadiene rubber, polyethylene glycol oxide (PEO), vinylidene fluoride-hexafluoropropylene copolymer
(PVDF-HFP), lauric acid acrylate (LA), polytetrafluoroethylene (PTFE) (PTFE), polyvinyl alcohol (PVA), epoxy resin, polypropylene
Acid at least one of (PAA) and sodium carboxymethylcellulose (CMC).The thickener is preferably sodium carboxymethylcellulose, hydroxyl second
Base cellulose, hydroxypropyl cellulose, diutan, chitosan and cross-linking type polysaccharide structures polymer, polyvinyl alcohol, in polyacrylic acid
It is at least one.In one embodiment, the content of the conductive agent can for positive electrode material layer gross mass 1.5% to
2.5%.The content of the binder is the 2% to 3% of the gross mass of positive electrode material layer.It is total that thickener can account for positive electrode material layer
The 0%~1.5% of quality.
The cathode pole piece may include the negative current collector and negative electrode material layer being stacked.
There is negative electrode active material, conductive agent and binder in the negative electrode material layer.It preferably, can also include thickening
Agent.Negative electrode material layer can be obtained by the way that the slurry containing negative electrode material to be coated on negative current collector or heat dissipating layer.Cathode
Material paste is negative electrode material and the pulp-like mixture that solvent is mixed to form.Solvent can be water.
In one embodiment, the negative electrode active material can selected from one of graphite, silicon carbon material and lithium titanate or
It is a variety of.The component and content of conductive agent, binder and thickener in the negative electrode material layer and positive electrode material layer can be distinguished
Identical or different, which is not described herein again.
The plus plate current-collecting body and negative current collector conduct electricity for supporting the positive electrode and negative electrode material respectively
Stream, shape can be paillon or netted.The material of the plus plate current-collecting body can be selected from aluminium, titanium, stainless steel, carbon cloth or carbon paper.
The material of the negative current collector can be selected from copper, nickel, stainless steel, carbon cloth or carbon paper.
The electrolyte is nonaqueous electrolytic solution, including solvent and is dissolved in the electrolyte of the solvent, the solvent can be selected from but
One of cyclic carbonate, linear carbonate, ring-type ethers, chain ethers, nitrile and amides or a variety of are not limited to, such as carbon
Vinyl acetate, propene carbonate, diethyl carbonate, dimethyl carbonate, methyl ethyl carbonate, methyl acetate, ethyl acetate, acetic acid third
Ester, methyl propionate, ethyl propionate, diethyl ether, acetonitrile, propionitrile, methyl phenyl ethers anisole, butyrate, glutaronitrile, dintrile, gamma-butyrolacton,
Gamma-valerolactone, tetrahydrofuran, 1,2- dimethoxy-ethane and one of acetonitrile and dimethylformamide or a variety of.
When electrochemical cell is lithium ion battery, the electrolyte is lithium salts, may be selected from but not limited to lithium chloride
(LiCl), lithium hexafluoro phosphate (LiPF6), LiBF4 (LiBF4), methanesulfonic acid lithium (LiCH3SO3), trifluoromethanesulfonic acid lithium
(LiCF3SO3), hexafluoroarsenate lithium (LiAsF6), lithium perchlorate (LiClO4) and one of di-oxalate lithium borate (LiBOB) or
It is a variety of.
Embodiment
Lithium-containing compound lithium aluminate and bonding agent PAA with the ratio of mass ratio 85:15 (lithium aluminate 1.5kg,
PAA0.26kg), it is added in dispersing agent acetone and carries out uniformly being mixed to get lithium-containing compound slurry, solid content is that 30% (acetone adds
Entering amount is 4.1kg).
By the way of dip-coating, using the PE diaphragm of 16 μ m-thicks as septum body 10, by lithium-containing compound slurry dual coating
In septum body 10.
The septum body 10 of lithium-containing compound slurry is coated with after oven dries (80 DEG C of temperature), obtain battery every
Film.Battery diaphragm contains 20 thickness of lithium coating between 4 μm~6 μm, and battery diaphragm overall thickness is between 20 μm~22 μm.
Above-mentioned battery diaphragm and anode pole piece, cathode pole piece and electrolyte are assembled into the Soft Roll electricity of model 406591
Pond, rated capacity 3Ah.Anode pole piece is used as positive electrode active materials using nickel-cobalt-manganese ternary material (NCM523), and cathode pole piece is adopted
Use graphite as negative electrode active material, electrolyte is LiPF containing 1mol/L6, 2% mass parts 1,3- propane sultone (PS) and
Ethylene carbonate-diethyl carbonate of 1% vinylene carbonate (VC)-methyl ethyl ester (EC-DEC-EMC) (volume ratio
1:1:1) electrolyte.
Comparative example
Comparative example is essentially identical with embodiment, difference be only that the battery diaphragm of comparative example be only septum body 10PE every
Film does not have and contains lithium coating 20.
The battery of embodiment and comparative example is carried out to guarantor's liquid measure, volume test, multiplying power test, circulation survey under the same conditions
Examination and hot abuse test.The result being repeated 3 times is as shown in table 1 below.
The different battery performance comparisons of table 1
Table 1 the result shows that, compared with the diaphragm not containing lithium coating 20, by septum body 10 be arranged containing lithium apply
Layer 20 enables to battery to have the ability of better wetting electrolytic liquid, the uniformity for improving battery charging and discharging, promote lithium ion
In the diffusion rate of diaphragm and the thermal stability of high temperature lower diaphragm plate so that battery protect liquid measure, capacity plays, forthright again
Energy, cycle performance and security performance have improvement.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of battery diaphragm, which is characterized in that the septum body (10) including being stacked and (20) containing lithium coating, it is described to contain
There is lithium-containing compound and binder, the lithium-containing compound is in the quality point containing in lithium coating (20) in lithium coating (20)
Number is 80%~98%.
2. battery diaphragm according to claim 1, which is characterized in that the lithium-containing compound be selected from lithium zirconate, lithium phosphate,
Lithium aluminate, lithium fluoride, lithium carbonate, lithium oxalate and lithium metasilicate it is one or more.
3. battery diaphragm according to claim 2, which is characterized in that the septum body (10) is polyolefins diaphragm,
The binder is selected from the one or more of polyacrylic acid, polyacrylamide, polyvinyl alcohol and Kynoar.
4. battery diaphragm according to claim 1-3, which is characterized in that the lithium-containing compound and the bonding
The mass ratio of agent is (80~98): (2~20).
5. battery diaphragm according to claim 1-3, which is characterized in that it is described containing lithium coating (20) with a thickness of
1 μm~10 μm.
6. battery diaphragm according to claim 1-3, which is characterized in that described to be arranged containing lithium coating (20) in institute
State the unilateral side or two sides of septum body (10).
7. a kind of preparation method of battery diaphragm according to claim 1-6, comprising:
There is provided lithium-containing compound slurry, the lithium-containing compound slurry includes the mixed uniformly lithium-containing compound, described viscous
Tie agent and dispersing agent；
The lithium-containing compound slurry is coated on the septum body (10)；And
The diaphragm for being coated with the lithium-containing compound slurry is dried and removes the dispersing agent.
8. the preparation method of battery diaphragm according to claim 7, which is characterized in that the temperature of the drying be 60 DEG C~
95℃。
9. the preparation method of battery diaphragm according to claim 7 or 8, which is characterized in that the lithium-containing compound slurry
In the lithium-containing compound and the binder gross mass percentage be 20%~50%.
10. a kind of battery, which is characterized in that including anode pole piece, cathode pole piece, battery diaphragm and electrolyte, the battery every
Film is arranged between the anode pole piece and the cathode pole piece and the anode pole piece and the cathode pole piece is isolated, described
Electrolyte infiltrates the battery diaphragm, the anode pole piece and the cathode pole piece, and the battery diaphragm is such as claim 1-6
Described in any item battery diaphragms or the battery being prepared for such as described in any item preparation methods of claim 7-9 every
Film.
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| CN201910724639.7A CN110459723A (en) | 2019-08-07 | 2019-08-07 | Battery diaphragm, preparation method thereof and battery with battery diaphragm |
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| CN111613759A (en) * | 2020-05-27 | 2020-09-01 | 湖北亿纬动力有限公司 | Separator slurry and preparation method thereof, separator and lithium ion battery |
| CN111900315A (en) * | 2020-08-04 | 2020-11-06 | 中国科学院物理研究所 | Ceramic diaphragm with double-sided coating material coating and preparation method and application thereof |
| CN112271405A (en) * | 2020-10-16 | 2021-01-26 | 欣旺达电动汽车电池有限公司 | Lithium-supplementing composite diaphragm and preparation method thereof |
| CN112768694A (en) * | 2021-01-11 | 2021-05-07 | 深圳市豪鹏科技股份有限公司 | Nickel-hydrogen battery positive electrode slurry, nickel-hydrogen battery positive electrode sheet and nickel-hydrogen battery |
| CN115995657A (en) * | 2023-03-03 | 2023-04-21 | 江苏正力新能电池技术有限公司 | Composite diaphragm structure, electrode assembly and lithium battery |
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| CN111613759A (en) * | 2020-05-27 | 2020-09-01 | 湖北亿纬动力有限公司 | Separator slurry and preparation method thereof, separator and lithium ion battery |
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| CN111900315B (en) * | 2020-08-04 | 2021-10-22 | 中国科学院物理研究所 | Ceramic diaphragm with double-sided coating material coating, preparation method and application thereof |
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