CN112825621A - 包含两个以上金属箔之间的电阻层的电极集流体、包含其的电极和锂二次电池 - Google Patents
包含两个以上金属箔之间的电阻层的电极集流体、包含其的电极和锂二次电池 Download PDFInfo
- Publication number
- CN112825621A CN112825621A CN202080004372.5A CN202080004372A CN112825621A CN 112825621 A CN112825621 A CN 112825621A CN 202080004372 A CN202080004372 A CN 202080004372A CN 112825621 A CN112825621 A CN 112825621A
- Authority
- CN
- China
- Prior art keywords
- current collector
- electrode
- electrode current
- resistive layer
- metal foil
- 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
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 20
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 title claims description 66
- 239000002184 metal Substances 0.000 title claims description 66
- 239000011888 foil Substances 0.000 title claims description 54
- 239000004020 conductor Substances 0.000 claims abstract description 30
- 239000011347 resin Substances 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 21
- -1 polyethylene Polymers 0.000 claims description 39
- 239000011230 binding agent Substances 0.000 claims description 13
- 239000004698 Polyethylene Substances 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 9
- 229920002943 EPDM rubber Polymers 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000002033 PVDF binder Substances 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 4
- 239000003575 carbonaceous material Substances 0.000 claims description 4
- 239000007772 electrode material Substances 0.000 claims description 4
- 229920001973 fluoroelastomer Polymers 0.000 claims description 4
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 4
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 4
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 4
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 4
- 239000004627 regenerated cellulose Substances 0.000 claims description 4
- 239000008107 starch Substances 0.000 claims description 4
- 235000019698 starch Nutrition 0.000 claims description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 4
- 229920005608 sulfonated EPDM Polymers 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 11
- 239000000843 powder Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 239000007784 solid electrolyte Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000011149 active material Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910003002 lithium salt Inorganic materials 0.000 description 4
- 159000000002 lithium salts Chemical class 0.000 description 4
- 239000011255 nonaqueous electrolyte Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 239000006230 acetylene black Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000003273 ketjen black Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 229920000265 Polyparaphenylene Polymers 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000006231 channel black Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000006232 furnace black Substances 0.000 description 2
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910003480 inorganic solid Inorganic materials 0.000 description 2
- 239000006233 lamp black Substances 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- URIIGZKXFBNRAU-UHFFFAOYSA-N lithium;oxonickel Chemical compound [Li].[Ni]=O URIIGZKXFBNRAU-UHFFFAOYSA-N 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 239000006234 thermal black Substances 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- PYOKUURKVVELLB-UHFFFAOYSA-N trimethyl orthoformate Chemical compound COC(OC)OC PYOKUURKVVELLB-UHFFFAOYSA-N 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical compound FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 description 1
- ZZXUZKXVROWEIF-UHFFFAOYSA-N 1,2-butylene carbonate Chemical compound CCC1COC(=O)O1 ZZXUZKXVROWEIF-UHFFFAOYSA-N 0.000 description 1
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical compound CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 description 1
- PPDFQRAASCRJAH-UHFFFAOYSA-N 2-methylthiolane 1,1-dioxide Chemical compound CC1CCCS1(=O)=O PPDFQRAASCRJAH-UHFFFAOYSA-N 0.000 description 1
- 229910001558 CF3SO3Li Inorganic materials 0.000 description 1
- 239000006245 Carbon black Super-P Substances 0.000 description 1
- 229910000925 Cd alloy Inorganic materials 0.000 description 1
- 229910018039 Cu2V2O7 Inorganic materials 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical group COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910007969 Li-Co-Ni Inorganic materials 0.000 description 1
- 229910006570 Li1+xMn2-xO4 Inorganic materials 0.000 description 1
- 229910006628 Li1+xMn2−xO4 Inorganic materials 0.000 description 1
- 229910010228 Li2Mn3MO8 Inorganic materials 0.000 description 1
- 229910007558 Li2SiS3 Inorganic materials 0.000 description 1
- 229910012722 Li3N-LiI-LiOH Inorganic materials 0.000 description 1
- 229910012716 Li3N-LiI—LiOH Inorganic materials 0.000 description 1
- 229910012734 Li3N—LiI—LiOH Inorganic materials 0.000 description 1
- 229910013043 Li3PO4-Li2S-SiS2 Inorganic materials 0.000 description 1
- 229910013035 Li3PO4-Li2S—SiS2 Inorganic materials 0.000 description 1
- 229910012810 Li3PO4—Li2S-SiS2 Inorganic materials 0.000 description 1
- 229910012797 Li3PO4—Li2S—SiS2 Inorganic materials 0.000 description 1
- 229910012047 Li4SiO4-LiI-LiOH Inorganic materials 0.000 description 1
- 229910012075 Li4SiO4-LiI—LiOH Inorganic materials 0.000 description 1
- 229910012057 Li4SiO4—LiI—LiOH Inorganic materials 0.000 description 1
- 229910010739 Li5Ni2 Inorganic materials 0.000 description 1
- 229910003253 LiB10Cl10 Inorganic materials 0.000 description 1
- 229910000552 LiCF3SO3 Inorganic materials 0.000 description 1
- 229910012820 LiCoO Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- 229910014172 LiMn2-xMxO2 Inorganic materials 0.000 description 1
- 229910014774 LiMn2O3 Inorganic materials 0.000 description 1
- 229910014437 LiMn2−XMXO2 Inorganic materials 0.000 description 1
- 229910002993 LiMnO2 Inorganic materials 0.000 description 1
- 229910014713 LiMnO3 Inorganic materials 0.000 description 1
- 229910014114 LiNi1-xMxO2 Inorganic materials 0.000 description 1
- 229910014907 LiNi1−xMxO2 Inorganic materials 0.000 description 1
- 229910013292 LiNiO Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 229910012346 LiSiO4-LiI-LiOH Inorganic materials 0.000 description 1
- 229910012345 LiSiO4-LiI—LiOH Inorganic materials 0.000 description 1
- 229910012348 LiSiO4—LiI—LiOH Inorganic materials 0.000 description 1
- 229910012967 LiV3O4 Inorganic materials 0.000 description 1
- 229910012970 LiV3O8 Inorganic materials 0.000 description 1
- 229910016622 LixFe2O3 Inorganic materials 0.000 description 1
- 229910015103 LixWO2 Inorganic materials 0.000 description 1
- 229910006555 Li—Co—Ni Inorganic materials 0.000 description 1
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 1
- 239000004472 Lysine Substances 0.000 description 1
- 229910015667 MoO4 Inorganic materials 0.000 description 1
- ZHGDJTMNXSOQDT-UHFFFAOYSA-N NP(N)(N)=O.NP(N)(N)=O.NP(N)(N)=O.NP(N)(N)=O.NP(N)(N)=O.NP(N)(N)=O Chemical compound NP(N)(N)=O.NP(N)(N)=O.NP(N)(N)=O.NP(N)(N)=O.NP(N)(N)=O.NP(N)(N)=O ZHGDJTMNXSOQDT-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 229910006145 SO3Li Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical class C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- QDDVNKWVBSLTMB-UHFFFAOYSA-N [Cu]=O.[Li] Chemical compound [Cu]=O.[Li] QDDVNKWVBSLTMB-UHFFFAOYSA-N 0.000 description 1
- BEKPOUATRPPTLV-UHFFFAOYSA-N [Li].BCl Chemical compound [Li].BCl BEKPOUATRPPTLV-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical class [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- FDLZQPXZHIFURF-UHFFFAOYSA-N [O-2].[Ti+4].[Li+] Chemical compound [O-2].[Ti+4].[Li+] FDLZQPXZHIFURF-UHFFFAOYSA-N 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical group 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000006183 anode active material Substances 0.000 description 1
- LJCFOYOSGPHIOO-UHFFFAOYSA-N antimony pentoxide Inorganic materials O=[Sb](=O)O[Sb](=O)=O LJCFOYOSGPHIOO-UHFFFAOYSA-N 0.000 description 1
- 229910000411 antimony tetroxide Inorganic materials 0.000 description 1
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 1
- 229910000417 bismuth pentoxide Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000004292 cyclic ethers Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 150000004862 dioxolanes Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000011267 electrode slurry Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- BLBBMBKUUHYSMI-UHFFFAOYSA-N furan-2,3,4,5-tetrol Chemical compound OC=1OC(O)=C(O)C=1O BLBBMBKUUHYSMI-UHFFFAOYSA-N 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010220 ion permeability Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- YADSGOSSYOOKMP-UHFFFAOYSA-N lead dioxide Inorganic materials O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 1
- XMFOQHDPRMAJNU-UHFFFAOYSA-N lead(II,IV) oxide Inorganic materials O1[Pb]O[Pb]11O[Pb]O1 XMFOQHDPRMAJNU-UHFFFAOYSA-N 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- 229910001547 lithium hexafluoroantimonate(V) Inorganic materials 0.000 description 1
- 229910001540 lithium hexafluoroarsenate(V) Inorganic materials 0.000 description 1
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Inorganic materials [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 description 1
- 229910002102 lithium manganese oxide Inorganic materials 0.000 description 1
- QEXMICRJPVUPSN-UHFFFAOYSA-N lithium manganese(2+) oxygen(2-) Chemical group [O-2].[Mn+2].[Li+] QEXMICRJPVUPSN-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
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 229910001537 lithium tetrachloroaluminate Inorganic materials 0.000 description 1
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 1
- HSFDLPWPRRSVSM-UHFFFAOYSA-M lithium;2,2,2-trifluoroacetate Chemical compound [Li+].[O-]C(=O)C(F)(F)F HSFDLPWPRRSVSM-UHFFFAOYSA-M 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 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
- 239000007773 negative electrode material Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 150000005181 nitrobenzenes Chemical class 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
- 239000011356 non-aqueous organic solvent Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920001197 polyacetylene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical group 0.000 description 1
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 description 1
- BHZCMUVGYXEBMY-UHFFFAOYSA-N trilithium;azanide Chemical compound [Li+].[Li+].[Li+].[NH2-] BHZCMUVGYXEBMY-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
- B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/668—Composites of electroconductive material and synthetic resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/42—Alternating layers, e.g. ABAB(C), AABBAABB(C)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/103—Metal fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/105—Metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/107—Ceramic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/107—Ceramic
- B32B2264/108—Carbon, e.g. graphite particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—Batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
-
- 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)
- Ceramic Engineering (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
本发明提供了锂二次电池用电极集流体、包含其的电极和锂二次电池,所述电极集流体包括:两个以上金属箔层和位于所述两个以上金属箔层之间的电阻层,其中,所述电阻层包含体积膨胀树脂、导电材料和胶粘剂。
Description
相关申请的交叉引用
本申请要求于2019年9月19日向韩国知识产权局提交的韩国专利申请No.10-2019-0115355的权益,通过援引将其公开内容完整并入本文。
技术领域
本发明涉及包含位于两个以上金属箔之间的电阻层的电极集流体、包含其的电极以及锂二次电池。
背景技术
最近,随着对移动设备的技术开发和需求的增加,对作为能源的能够充电和放电的二次电池的需求迅速增加,因此,许多能够符合各种需求的电池的研究正在涌现。此外,作为为了解决使用化石燃料的现有汽油和柴油车辆造成的问题(例如空气污染)而开发的电动车辆(EV)、混合动力电动车辆(HEV)和插电式混合动力电动车辆(插电式HEV)的电源,二次电池已引起了极大的关注。
因此,已经开发了仅由二次电池驱动的电动车辆(EV)和将常规发动机与二次电池结合的混合动力电动车辆(HEV),并且其中一些已经商业化。镍-金属氢化物(Ni-MH)二次电池已主要用作EV和HEV的电源。然而,最近已经积极地进行了使用具有高能量密度、高放电电压和输出稳定性的锂二次电池的研究,并且其中一些已经商业化。
这种锂二次电池通过以下过程制造:将含有电极活性材料的电极浆料涂布到电极集流体上,干燥并辊压以制造电极,并且将其中隔膜置于这些电极之间的电极组件与电解质一起内置于电池壳体中。
这里,由于电极集流体用于接收来自活性材料的电子并将其转移至另一电极,因此,如果电极集流体具有优异的电子导电性,则包含该电极集流体的锂二次电池的输出特性得到提高。
另外,最近,锂二次电池的使用一直在扩大,并且它们正在用于电动车辆等中,因此,正在积极地进行提高输出特性的研究。
其中,已经开发了通过增加电极集流体的厚度来提高输出特性的技术,但随着电极集流体变厚,可能流过更大量的电流。因此,在非理想充电情况下,其作为降低安全性的因素,成为该研究的绊脚石。
因此,迫切需要一种能够解决上述问题并通过形成更厚的电极集流体来在提高输出特性的同时防止安全性劣化的技术。
发明内容
[技术问题]
本发明旨在解决现有技术的上述问题以及其他尚未解决的技术问题。
具体而言,本发明的目的是提供一种电极集流体,其能够保持较大的厚度以提高输出特性并且还提高包含该电极集流体的二次电池的安全性。
[技术方案]
为了实现上述目的,根据本发明的实施方式,提供了一种锂二次电池用电极集流体,
所述电极集流体包括:两个以上金属箔层和位于所述两个以上金属箔层之间的电阻层,
其中,所述电阻层包含体积膨胀树脂、导电材料和胶粘剂。
在一个实施方式中,电阻层可以置于两个以上扁平金属箔层之间。
例如,电极集流体可以构造成包括下部集流体、位于所述下部集流体上的第一电阻层、位于所述第一电阻层上的中间集流体、位于所述中间集流体上的第二电阻层和位于所述第二电阻层上的上部集流体。
在另一个实施方式中,两个以上金属箔层中的至少一个金属箔层在其表面上具有包含凸部和凹部的凹凸部,并且电阻层可以形成在所述凹部中。
此时,凸部和凹部可以以规律性间隔形成。
同时,电阻层中包含的体积膨胀树脂可以是选自由聚乙烯、聚丙烯和聚乙烯乙酸乙烯酯组成的组中的至少一种。
如果温度因非理想情况而升高,则电阻层中包含的体积膨胀树脂可以阻断彼此相邻的两个金属箔层之间的电流。
导电材料可以是选自由碳基材料和金属材料组成的组中的至少一种。
胶粘剂可以是选自由聚偏二氟乙烯、聚乙烯醇、羧甲基纤维素(CMC)、淀粉、羟丙基纤维素、再生纤维素、聚乙烯吡咯烷酮、聚四氟乙烯、聚乙烯、聚丙烯、乙烯-丙烯-二烯三元共聚物(EPDM)、磺化EPDM、苯乙烯-丁二烯橡胶和氟橡胶组成的组中的至少一种。
同时,电阻层的厚度可以为5至50μm。
两个以上金属箔层可以由彼此相同的金属制成。
两个以上金属箔层的厚度可以分别为10至100μm。
两个以上金属箔层可以由Al金属制成,并且电极集流体可以是正极集流体。
同时,根据本发明的另一个实施方式,提供了电极以及包含其的锂二次电池,在所述电极中,含有电极活性材料、粘合剂和导电材料的电极混合物形成在上述电极集流体的至少一个表面上。
附图说明
图1是本发明的一个实施方式的电极集流体的垂直截面图。
图2是本发明的另一个实施方式的电极集流体的垂直截面图。
图3是本发明的另一个实施方式的电极集流体的垂直截面图。
图4是本发明的又一个实施方式的电极集流体的垂直截面图。
图5是本发明的又一个实施方式的电极集流体的平面图。
图6是本发明的再一个实施方式的电极集流体的平面图。
图7是本发明的再一个实施方式的电极集流体的平面图。
图8是由本发明的电极集流体中的电阻层的温度引起的形状变化的示意图。
具体实施方式
根据本发明,提供了一种锂二次电池用电极集流体,
所述电极集流体包括:两个以上金属箔层和位于所述两个以上金属箔层之间的电阻层,
其中,所述电阻层包含体积膨胀树脂、导电材料和胶粘剂。
电极集流体没有限制,只要其具有包括两个以上金属箔层之间的电阻层的结构即可,并且多种结构是可行的。
作为一个实例,电阻层可以置于两个以上扁平金属箔层之间。换句话说,其可以是作为一层置于两个以上的金属箔层之间的形状。
具体而言,这是一种电阻层作为一层置于两个金属箔层之间的结构,并且可以由下部集流体、位于下部集流体上的电阻层和位于电阻层上的上部集流体组成。
这里和下文中,下部集流体、上部集流体、中间集流体等是用于划分集流体的结构的术语,并且对应于金属箔层。
图1示意性地示出了这种电极集流体的垂直截面图。
参考图1,本发明的电极集流体100具有电阻层120置于两个金属箔层111和112之间的结构。
具体而言,电极集流体由下部集流体112、位于下部集流体112上的电阻层120和位于电阻层120上的上部集流体111组成。
作为另选,电极集流体可以具有如下结构:金属箔层为三个以上,电阻层为两个以上,且电阻层置于金属箔层之间。
图2示意性地示出了电极集流体的垂直截面图。
参考图2,本发明的电极集流体200由包括下部集流体213、位于下部集流体213上的第一电阻层222、位于第一电阻层222上的中间集流体212、位于中间集流体212上的第二电阻层221和位于第二电阻层221上的上部集流体211的结构组成。
作为另一个实例,两个以上金属箔层中的至少一个金属箔层可以在其表面上具有包含凸部和凹部的凹凸部,并且电阻层可以形成在凹部中。
具体而言,电极集流体可以是如下结构:在彼此面对的金属箔层的一个表面上具有包含凸部和凹部的凹凸部,其中,电阻层形成在凹部中。
为了示出这种结构,图3中示意性地示出了这种电极集流体的垂直截面图。
参考图3,本发明的电极集流体300包括上部集流体311、下部集流体312和位于上部集流体311和下部集流体312之间的电阻层320。
此时,下部集流体312在表面上具有包含凸部A和凹部B的凹凸部,其中,电阻层320形成在凹部B中。
作为另选,电极集流体可以是如下结构:在彼此面对的两个金属箔层表面上均具有包含凸部和凹部的凹凸部,其中,电阻层形成在凹部中。
图4示意性地示出了这种电极集流体的垂直截面图。
参考图4,本发明的电极集流体400具有如下结构:在上部集流体411和下部集流体412的表面上具有包含凸部A'和凹部B'的凹凸部,其中,凸部A'彼此面对,凹部B'彼此面对,并且电阻层420形成在彼此面对的凹部B'中。
同时,尽管图中未示出,但上部集流体的凸部和下部集流体的凹部可以彼此面对。在此情况下,电阻层可以形成在各自的凹部中。
对于如图3和4所示形成有凸部和凹部的金属箔层,凸部A和A'以及凹部B和B'可以以规律性间隔d1=d2形成。当然,间隔不限于此,只要其是包括足以显示本发明的效果的水平的电阻层的情况即可,并且间隔可以适当地选择。例如,间隔d1和d2可以分别为100μm至200μm。
同时,当以此方式形成凹部和凸部时,凹部的平面形状没有限制,并且可以是线形形状、圆形形状或多边形形状。
为了示出这些实例,图5至7示出了具有凹部和凸部的金属箔的平面图。
图5示出了凹部的平面形状是线形的情况,图6示出了凹部的平面形状是方形的情况,图7示出了凹部的平面形状是圆形的情况。在图7那样的情况下,与图3至4不同,垂直横截面形状可以是半圆形。
在以此方式具有凹部和凸部并将电阻层形成在凹部中的情况下,由于电阻层的插入,可以使集流体的整个体积减小,并且各个金属箔层也可以彼此直接接触。因此,其优点在于,在正常的工作条件下与现有的单个集流体一样可以充分确保导电性,因此可以防止包含该集流体的二次电池的能量密度和输出特性相对于体积的劣化。
同时,无论任何结构,两个以上的金属箔层在材料方面没有限制,但可以使用铜、不锈钢、铝、镍、钛、烧结碳,或其表面经碳、镍、钛、银处理过的铜、不锈钢;或铝-镉合金等。
两个以上的金属箔层可以在上述材料中选择并使用,并且可以由彼此相同或不同的金属形成。然而,考虑到电阻增加或在两侧上使用相同的活性材料,金属箔层可以由彼此相同的金属制成。
此外,再参考图1至4,金属箔层111、112、211、212、213、311、312、411和412的厚度t1、t2、t3、t4、t5、t6、t7、t8和t9可以分别为10至100μm。
当金属箔层各自的厚度太薄而超出上述范围时,输出特性降低,而当厚度太厚时,即使存在电阻层,也无法有效地防止由于现有电极集流体变厚而出现的安全性问题,这是不优选的。
此外,金属箔层的形状可以通过在其表面上形成精细的凹凸来提高活性材料的结合力,并且可以使用各种形状,例如膜、片、箔、网、多孔体、泡沫体和无纺布。
同时,电阻层120、221、222、320和420的厚度T1、T2、T3、T4和T5可以分别为5至50μm。
当厚度太薄而超出上述范围时,其可能无法充当电阻层。相反,当厚度太厚时,即使在正常工作期间,其也可能充当降低电子传导性的电阻层,从而导致总体积增加和单位体积能量密度降低,这是不优选的。
同时,图8示出了放大示意图以阐明电阻层的构造和电阻层工作的形式。作为实例,将结合图1给出描述。
参考图1和图8,电阻层可以具体地包含体积膨胀树脂121、导电材料122和胶粘剂123。
具体而言,体积膨胀树脂121随着温度的升高而熔融并体积膨胀,并且没有限制,只要其是不引起与电解质的副反应的材料即可。具体而言,其可以是选自由聚乙烯、聚丙烯和聚乙烯乙酸乙烯酯组成的组中的至少一种。
此时,基于电阻层的总重量,体积膨胀树脂121的含量可以为20至50重量%。
当体积膨胀树脂的含量太小而超出上述范围时,在异常情况下无法充分发挥安全性,而当体积膨胀树脂的含量太大时,在二次电池的正常工作情况下难以通过连接导电材料来确保导电性,这是不优选的。
这里,体积膨胀树脂121可以在稍后的异常情况下用作电阻器。
具体而言,如图8示意性所示,在二次电池的正常工作下(图8(a)),体积膨胀树脂121以特定类型的颗粒存在,使得导电材料122可以实现导电路径,反之如果电池温度由于异常情况而升高到预定温度以上(图8(b)),则体积膨胀树脂121在熔融的同时膨胀并破坏导电材料122的导电路径以增加电阻,从而确保电池的安全性。即,当温度由于异常情况而升高时,电阻层120中包含的体积膨胀树脂121膨胀,从而减少或阻断两个相邻的金属箔111和112之间的电流。
导电材料122置于两个以上金属箔层之间,同时起到保持彼此两侧的导电性的作用。
导电材料122是可用于普通锂二次电池中的材料,并且没有特别限制,只要其具有导电性而在相应的电池中不引起化学变化即可,并且例如,可以使用碳黑,例如炭黑、乙炔黑、科琴黑、槽黑、炉黑、灯黑和热裂法碳黑;导电纤维,例如碳纤维和金属纤维;金属粉末,例如碳氟化合物粉末、铝粉末和镍粉末;导电晶须,例如氧化锌和钛酸钾;导电金属氧化物,例如氧化钛;诸如聚亚苯基衍生物等导电材料。具体实例可以是选自由碳基材料和金属材料组成的组中的至少一种。
基于电阻层的总重量,导电材料的含量可以为5至40重量%。
当导电材料的含量太小而超出上述范围时,无法确保电阻层中足够的导电性,而当导电材料的含量太大时,即使在非理想工作情况下也能保持导电性,这是不优选的。
同时,电阻层120还必须起到粘结两个以上金属箔层的作用,因此还包括胶粘剂。
胶粘剂123形成金属箔与电阻层之间的结合,并且还有助于导电材料和体积膨胀树脂之间的结合。
这种胶粘剂123没有限制,只要其是具有粘合性且在电池中不引起化学变化的成分即可。其实例可以是选自由聚偏二氟乙烯、聚乙烯醇、羧甲基纤维素(CMC)、淀粉、羟丙基纤维素、再生纤维素、聚乙烯吡咯烷酮、聚四氟乙烯、聚乙烯、聚丙烯、乙烯-丙烯-二烯三元共聚物(EPDM)、磺化EPDM、苯乙烯-丁二烯橡胶和氟橡胶组成的组中的至少一种。
基于电阻层的总重量,胶粘剂的含量可以为5至40重量%。
当胶粘剂的含量太小而超出上述范围时,无法确保电阻层和金属箔之间的粘合力,而当胶粘剂的含量太大时,其他材料的含量降低并且电阻可能增加,这是不优选的。
利用这种结构,可以增加电极集流体的总厚度。因此,在包含其的二次电池的正常工作情况下,金属箔之间的导电性因电阻层的导电材料而保持,并且其可以表现出与具有两个以上金属箔的合并厚度的金属箔相似的输出特性,而且在异常情况下,温度升高会导致体积膨胀树脂熔融并膨胀,从而破坏导电材料中的导电网络。因此,电阻增加,并且可以通过在过充电期间终止早期电压或通过在过度C-倍率情况下减小电流来提高安全性。
同时,由于电子从正极转移到负极,因此两个以上金属箔可以由Al金属制成。
当然,本发明的电极集流体可以是负极集流体,并且两个以上金属箔可以由Cu金属制成。
本发明还提供了一种电极以及包含该电极的锂二次电池,在所述电极中,含有电极活性材料、粘合剂和导电材料的电极混合物形成在电极集流体的至少一个表面上。
电极集流体具有如上所述的结构,并且电极可以是正极和负极。
当电极是正极时,电极集流体可以是正极集流体,并且可以具有如下结构:含有正极活性材料、粘合剂和导电材料的正极混合物形成在正极集流体的至少一个表面上。
正极活性材料可以是例如层状化合物,例如锂钴氧化物(LiCoO2)或锂镍氧化物(LiNiO2)或取代有一种或多种过渡金属的化合物;锂锰氧化物,例如化学式Li1+xMn2-xO4(其中,x为0至0.33)、LiMnO3、LiMn2O3、LiMnO2;锂铜氧化物(Li2CuO2);钒氧化物,例如LiV3O8、LiV3O4、V2O5和Cu2V2O7;化学式LiNi1-xMxO2(其中,M=Co、Mn、Al、Cu、Fe、Mg、B或Ga,并且x=0.01至0.3)表示的Ni位型锂镍氧化物;化学式LiMn2-xMxO2(其中,M=Co、Ni、Fe、Cr、Zn或Ta,并且x=0.01至0.1)或Li2Mn3MO8(其中,M=Fe、Co、Ni、Cu或Zn)表示的锂锰复合氧化物;化学式中的Li部分被碱土金属离子取代的LiMn2O4;二硫化物;Fe2(MoO4)3等等,但不限于此。
粘合剂没有限制,只要其是有助于活性材料和导电材料之间的结合以及与集流体的结合的成分即可。例如,粘合剂可以选自聚偏二氟乙烯、聚乙烯醇、羧甲基纤维素(CMC)、淀粉、羟丙基纤维素、再生纤维素、聚乙烯吡咯烷酮、聚四氟乙烯、聚乙烯、聚丙烯、乙烯-丙烯-二烯三元共聚物(EPDM)、磺化EPDM、苯乙烯-丁二烯橡胶、氟橡胶和各种共聚物等。
导电材料作为常规导电材料没有特别限制,只要其具有导电性而在相应的电池中不引起化学变化即可,并且例如,可以使用碳黑,例如炭黑、乙炔黑、科琴黑、槽黑、炉黑、灯黑和热裂法碳黑;导电纤维,例如碳纤维和金属纤维;金属粉末,例如碳氟化合物粉末、铝粉末和镍粉末;导电晶须,例如氧化锌和钛酸钾;导电金属氧化物,例如氧化钛;诸如聚亚苯基衍生物等导电材料。
此时,基于正极混合物的总重量,导电材料和粘合剂的含量可以各自为0.1至30重量%,具体为0.5至10重量%,更具体为1至5重量%。
当电极是负极时,电极集流体可以是负极集流体,并且可以是如下结构:含有负极活性材料、粘合剂和导电材料的负极混合物形成在负极集流体的至少一个表面上。
负极活性材料可以包括:选自由人造结晶石墨、天然结晶石墨、无定形硬碳、低结晶软碳、炭黑、乙炔黑、科琴黑、Super-P、石墨烯和纤维状碳组成的组中的一种以上的碳基材料;硅基材料;金属复合氧化物,例如LixFe2O3(0≤x≤1)、LixWO2(0≤x≤1)、SnxMe1-xMe’yOz(Me:Mn、Fe、Pb、Ge;Me’:Al、B、P、Si、元素周期表中的第1、2、3族元素、卤素;0<x≤1;1≤y≤3;1≤z≤8);锂金属;锂合金;硅基合金;锡基合金;金属基氧化物,例如SnO、SnO2、PbO、PbO2、Pb2O3、Pb3O4、Sb2O3、Sb2O4、Sb2O5、GeO、GeO2、Bi2O3、Bi2O4和Bi2O5;导电聚合物,例如聚乙炔;Li-Co-Ni基材料;钛氧化物;锂钛氧化物等等,但不限于此。
导电材料和粘合剂的细节与对于正极的描述相同。
此外,电极混合物还可以任选地包括填料等。
填料任选地用作抑制正极膨胀的成分,并且没有特别限制,只要该填料是纤维状材料且在电池中不引起化学变化即可。例如,使用烯烃聚合物,例如聚乙烯和聚丙烯以及纤维状材料,例如玻璃纤维和碳纤维。
同时,作为置于正极和负极之间的隔膜,使用具有高离子渗透性和机械强度的绝缘薄膜。隔膜的孔径通常为0.01至10μm,其厚度通常为5至300μm。作为隔膜的实例,可以使用诸如耐化学性和疏水性的聚丙烯等烯烃基聚合物;由玻璃纤维或聚乙烯等制成的片或无纺布。当使用固体电解质(例如聚合物)作为电解质时,固体电解质也可以充当隔膜。
含有锂盐的非水电解质可以包括非水电解质和锂盐。
作为非水有机溶剂的实例,可以提及非质子有机溶剂,例如N-甲基-2-吡咯烷酮、碳酸亚丙酯、碳酸亚乙酯、碳酸亚丁酯、碳酸二甲酯、碳酸二乙酯、γ-丁内酯、1,2-二甲氧基乙烷、四羟基呋喃、2-甲基四氢呋喃、二甲亚砜、1,3-二氧戊环、甲酰胺、二甲基甲酰胺、二氧戊环、乙腈、硝基甲烷、甲酸甲酯、乙酸甲酯、磷酸三酯、三甲氧基甲烷、二氧戊环衍生物、环丁砜、甲基环丁砜、1,3-二甲基-2-咪唑烷酮、碳酸亚丙酯衍生物、四氢呋喃衍生物、醚、丙酸甲酯和丙酸乙酯。
锂盐是易溶于上述非水电解质的材料。锂盐可以包括例如LiCl、LiBr、LiI、LiClO4、LiBF4、LiB10Cl10、LiPF6、LiCF3SO3、LiCF3CO2、LiAsF6、LiSbF6、LiAlCl4、CH3SO3Li、CF3SO3Li、(CF3SO2)2NLi、氯硼烷锂、低级脂族羧酸锂、四苯基硼酸锂和亚胺化物。
必要时,可以使用有机固体电解质或无机固体电解质等。
有机固体电解质的实例包括聚乙烯衍生物、聚环氧乙烷衍生物、聚环氧丙烷衍生物、磷酸酯聚合物、聚搅拌赖氨酸、聚酯硫化物、聚乙烯醇、聚偏二氟乙烯和含有离子离解基团的聚合物。
无机固体电解质的实例包括锂(Li)的氮化物、卤化物和硫酸盐,例如Li3N、LiI、Li5NI2、Li3N-LiI-LiOH、LiSiO4、LiSiO4-LiI-LiOH、Li2SiS3、Li4SiO4、Li4SiO4-LiI-LiOH、Li3PO4-Li2S-SiS2。
另外,为了改善充电和放电特性以及阻燃性等,可以向非水电解质中添加例如吡啶、亚磷酸三乙酯、三乙醇胺、环醚、乙二胺、n-甘醇二甲醚、六磷酸三酰胺、硝基苯衍生物、硫、醌亚胺染料、N-取代的噁唑烷酮、N,N-取代的咪唑烷、乙二醇二烷基醚、铵盐、吡咯、2-甲氧基乙醇或三氯化铝等。在一些情况下,为了赋予不燃性,电解质可以进一步包括含卤素溶剂,例如四氯化碳和三氟乙烯。此外,为了提高高温保存特性,电解质可以进一步包括二氧化碳气体。
锂二次电池可以作为装置的单元电池而包含,并且该装置可以选自由移动电话、便携式计算机、智能电话、平板电脑、智能平板、上网本计算机、轻型电动车辆(LEV)、电动车辆、混合动力电动车辆、插电式混合动力电动车辆和电力存储装置组成的组。
所述装置的结构和制造方法在本发明所属领域中是公知的,因此将省略其详细描述。
尽管出于说明性目的公开了本发明的示例性实施方式,但本领域技术人员将理解,在不脱离所附权利要求中公开的本发明的范围和精神的情况下,可以进行各种应用和修改。
工业实用性
如上所述,在本发明的电极集流体中,由于将含有体积膨胀树脂的电阻层设置在两个以上金属箔之间,因此不仅使金属箔的总厚度较厚以提高输出特性,而且当温度由于异常情况而升高时,体积膨胀树脂熔融并膨胀以增加电极集流体的电阻,从而减小流过电极集流体的电流,以表现出提高电芯安全性的效果。
Claims (15)
1.一种锂二次电池用电极集流体,
所述电极集流体包括:两个以上金属箔层和位于所述两个以上金属箔层之间的电阻层,
其中,所述电阻层包含体积膨胀树脂、导电材料和胶粘剂。
2.如权利要求1所述的电极集流体,其中,所述电阻层置于扁平的两个以上金属箔层之间。
3.如权利要求2所述的电极集流体,其中,所述电极集流体包括下部集流体、位于所述下部集流体上的第一电阻层、位于所述第一电阻层上的中间集流体、位于所述中间集流体上的第二电阻层和位于所述第二电阻层上的上部集流体。
4.如权利要求1所述的电极集流体,其中,所述两个以上金属箔层中的至少一个金属箔层在其表面上具有包含凸部和凹部的凹凸部,并且所述电阻层形成在所述凹部中。
5.如权利要求4所述的电极集流体,其中,所述凸部和所述凹部以规律性间隔形成。
6.如权利要求1所述的电极集流体,其中,所述体积膨胀树脂是选自由聚乙烯、聚丙烯和聚乙烯乙酸乙烯酯组成的组中的至少一种。
7.如权利要求1所述的电极集流体,其中,所述导电材料是选自由碳基材料和金属材料组成的组中的至少一种。
8.如权利要求1所述的电极集流体,其中,所述胶粘剂是选自由聚偏二氟乙烯、聚乙烯醇、羧甲基纤维素(CMC)、淀粉、羟丙基纤维素、再生纤维素、聚乙烯吡咯烷酮、聚四氟乙烯、聚乙烯、聚丙烯、乙烯-丙烯-二烯三元共聚物(EPDM)、磺化EPDM、苯乙烯-丁二烯橡胶和氟橡胶组成的组中的至少一种。
9.如权利要求1所述的电极集流体,其中,在温度因非理想情况而升高时,所述电阻层中包含的所述体积膨胀树脂阻断彼此相邻的两个金属箔层之间的电流。
10.如权利要求1所述的电极集流体,其中,所述电阻层的厚度为5μm至50μm。
11.如权利要求1所述的电极集流体,其中,所述两个以上金属箔层是彼此相同的金属。
12.如权利要求1所述的电极集流体,其中,所述两个以上金属箔层的厚度分别为10μm至100μm。
13.如权利要求1所述的电极集流体,其中,所述两个以上金属箔层由Al金属制成,并且所述电极集流体是正极集流体。
14.一种电极,其中,含有电极活性材料、粘合剂和导电材料的电极混合物形成在权利要求1所述的电极集流体的至少一个表面上。
15.一种锂二次电池,其包含权利要求14所述的电极。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2019-0115355 | 2019-09-19 | ||
KR1020190115355A KR20210033721A (ko) | 2019-09-19 | 2019-09-19 | 2개 이상의 금속 호일 사이에 저항층을 포함하는 전극 집전체, 이를 포함하는 전극 및 리튬 이차전지 |
PCT/KR2020/009773 WO2021054595A1 (ko) | 2019-09-19 | 2020-07-24 | 2개 이상의 금속 호일 사이에 저항층을 포함하는 전극 집전체, 이를 포함하는 전극 및 리튬 이차전지 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112825621A true CN112825621A (zh) | 2021-05-21 |
Family
ID=74883048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202080004372.5A Pending CN112825621A (zh) | 2019-09-19 | 2020-07-24 | 包含两个以上金属箔之间的电阻层的电极集流体、包含其的电极和锂二次电池 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20210384514A1 (zh) |
EP (1) | EP3836287A4 (zh) |
KR (2) | KR20210033721A (zh) |
CN (1) | CN112825621A (zh) |
WO (1) | WO2021054595A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023097565A1 (zh) * | 2021-12-01 | 2023-06-08 | 宁德时代新能源科技股份有限公司 | 正极极片及包括其的二次电池、电池模块、电池包和用电装置 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114335557B (zh) * | 2021-11-30 | 2023-07-14 | 蜂巢能源科技有限公司 | 复合箔材及制备方法、集流体和锂离子电池 |
KR20230140051A (ko) * | 2022-03-29 | 2023-10-06 | 주식회사 엘지에너지솔루션 | 양극 및 이를 포함하는 전지 |
CN115000414A (zh) * | 2022-06-15 | 2022-09-02 | 欣旺达惠州动力新能源有限公司 | 一种集流体及其制备方法与应用 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080036261A (ko) * | 2006-10-23 | 2008-04-28 | 주식회사 엘지화학 | 도전성 고분자가 균일한 패턴으로 코팅되어 있는 음극 및이를 포함하고 있는 이차전지 |
US20120052378A1 (en) * | 2010-08-25 | 2012-03-01 | Naoto Torata | Collector and electrode for nonaqueous secondary battery and nonaqueous secondary battery |
CN102856558A (zh) * | 2011-07-01 | 2013-01-02 | 夏普株式会社 | 集流体和非水系二次电池 |
CN102891323A (zh) * | 2011-07-22 | 2013-01-23 | 夏普株式会社 | 集流体和非水系二次电池 |
WO2014132679A1 (ja) * | 2013-02-28 | 2014-09-04 | 日東電工株式会社 | 導電性積層シート、および、集電体 |
US9825302B1 (en) * | 2016-05-23 | 2017-11-21 | Korea Jcc Co., Ltd. | Metal foil, metal foil manufacturing method and method for manufacturing electrode using the same |
CN108682790A (zh) * | 2018-03-30 | 2018-10-19 | 合肥国轩高科动力能源有限公司 | 一种锂金属负极片及其制作方法 |
CN109216703A (zh) * | 2018-09-06 | 2019-01-15 | 珠海光宇电池有限公司 | 一种柔性多孔集流体及其制备方法 |
JP2019071208A (ja) * | 2017-10-10 | 2019-05-09 | トヨタ自動車株式会社 | 負極集電体 |
CN110114914A (zh) * | 2017-07-28 | 2019-08-09 | 株式会社Lg化学 | 二次电池用正极以及包含其的锂二次电池 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100858415B1 (ko) * | 2004-12-02 | 2008-09-11 | 주식회사 엘지화학 | 양극 전압에서 안정한 금속이 피복되어 있는 양극 집전체및 그것을 포함하는 리튬 이차전지 |
JP2009059571A (ja) * | 2007-08-31 | 2009-03-19 | Sanyo Electric Co Ltd | 電池用集電体及びこれを用いた電池 |
JP6008389B2 (ja) * | 2012-06-01 | 2016-10-19 | セイコーインスツル株式会社 | 電子部品、及び電子装置 |
FR2993098B1 (fr) * | 2012-07-09 | 2019-11-01 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Collecteur de courant pour batterie lithium |
WO2015064652A1 (ja) * | 2013-10-30 | 2015-05-07 | 日本ポリエチレン株式会社 | 導電性ポリエチレン樹脂組成物並びにそれを用いた成形品、および積層体 |
JP2018092804A (ja) * | 2016-12-05 | 2018-06-14 | セイコーエプソン株式会社 | 電池及び電池の製造方法、電子機器 |
-
2019
- 2019-09-19 KR KR1020190115355A patent/KR20210033721A/ko active Application Filing
-
2020
- 2020-07-24 CN CN202080004372.5A patent/CN112825621A/zh active Pending
- 2020-07-24 WO PCT/KR2020/009773 patent/WO2021054595A1/ko unknown
- 2020-07-24 EP EP20848785.0A patent/EP3836287A4/en active Pending
- 2020-07-24 US US17/269,440 patent/US20210384514A1/en active Pending
-
2023
- 2023-10-18 KR KR1020230139552A patent/KR20230149783A/ko active Application Filing
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080036261A (ko) * | 2006-10-23 | 2008-04-28 | 주식회사 엘지화학 | 도전성 고분자가 균일한 패턴으로 코팅되어 있는 음극 및이를 포함하고 있는 이차전지 |
US20120052378A1 (en) * | 2010-08-25 | 2012-03-01 | Naoto Torata | Collector and electrode for nonaqueous secondary battery and nonaqueous secondary battery |
CN102856558A (zh) * | 2011-07-01 | 2013-01-02 | 夏普株式会社 | 集流体和非水系二次电池 |
CN102891323A (zh) * | 2011-07-22 | 2013-01-23 | 夏普株式会社 | 集流体和非水系二次电池 |
WO2014132679A1 (ja) * | 2013-02-28 | 2014-09-04 | 日東電工株式会社 | 導電性積層シート、および、集電体 |
US9825302B1 (en) * | 2016-05-23 | 2017-11-21 | Korea Jcc Co., Ltd. | Metal foil, metal foil manufacturing method and method for manufacturing electrode using the same |
CN110114914A (zh) * | 2017-07-28 | 2019-08-09 | 株式会社Lg化学 | 二次电池用正极以及包含其的锂二次电池 |
JP2019071208A (ja) * | 2017-10-10 | 2019-05-09 | トヨタ自動車株式会社 | 負極集電体 |
CN108682790A (zh) * | 2018-03-30 | 2018-10-19 | 合肥国轩高科动力能源有限公司 | 一种锂金属负极片及其制作方法 |
CN109216703A (zh) * | 2018-09-06 | 2019-01-15 | 珠海光宇电池有限公司 | 一种柔性多孔集流体及其制备方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023097565A1 (zh) * | 2021-12-01 | 2023-06-08 | 宁德时代新能源科技股份有限公司 | 正极极片及包括其的二次电池、电池模块、电池包和用电装置 |
Also Published As
Publication number | Publication date |
---|---|
US20210384514A1 (en) | 2021-12-09 |
EP3836287A1 (en) | 2021-06-16 |
KR20230149783A (ko) | 2023-10-27 |
EP3836287A4 (en) | 2021-08-18 |
KR20210033721A (ko) | 2021-03-29 |
WO2021054595A1 (ko) | 2021-03-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10910639B2 (en) | Multi-layer negative electrode with different binder content and different particle size of active material in each layer and lithium secondary battery comprising the same | |
KR101783445B1 (ko) | 다층 구조 전극 및 이를 포함하는 리튬 이차전지 | |
US9099721B2 (en) | High-power lithium secondary battery | |
KR100894410B1 (ko) | 이종 전극 활물질층을 포함하고 있는 중첩식 리튬 이차전지 | |
CN108140867B (zh) | 具有其中形成有多个电极接片的单元电极的袋型电池单元 | |
US20210384514A1 (en) | Electrode current collector comprising resistive layer between two or more metal foils, electrode comprising the same, and lithium secondary battery | |
KR100825207B1 (ko) | 안전성이 향상된 이차전지 | |
CN111788721B (zh) | 包含直径不同的石墨和硅基材料的负极以及包含其的锂二次电池 | |
KR102161591B1 (ko) | 용량 및 안전성이 개선된 리튬 이차전지용 양극 및 이를 포함하는 리튬 이차전지 | |
US9966627B2 (en) | Electrode assembly of incline structure and battery cell employed with the same | |
CN110383535B (zh) | 电池模块及其制造方法 | |
KR20100071773A (ko) | 이차전지의 제조방법 | |
KR20080058967A (ko) | 과충전 안전성이 향상된 이차전지 | |
KR102563808B1 (ko) | 집전체의 양면에 서로 다른 조성의 활물질을 포함하는 음극 합제들이 형성되어 있는 음극을 포함하는 젤리-롤형 전극조립체, 이를 포함하는 이차전지, 및 이차전지를 포함하는 디바이스 | |
KR102082467B1 (ko) | 집전체 중심 부위에 높은 활물질 로딩량을 가지는 전극을 포함하는 전극조립체 | |
KR102070907B1 (ko) | 충방전 시 발생하는 가스를 수용할 수 있는 잉여부를 포함하는 전지셀 | |
CN111801837A (zh) | 包括具有绝缘层的电极的堆叠型电极组件和包括该堆叠型电极组件的锂二次电池 | |
US10720628B2 (en) | Battery module including cooling pin having fixing protrusions formed thereon | |
KR102261649B1 (ko) | 단위셀의 위치에 따라 기공률이 상이한 전극을 포함하는 전극조립체 | |
EP3823077A1 (en) | Electrode current collector comprising heat-pressure conversion layer between two or more metal foils, electrode comprising same, and lithium secondary battery | |
KR102026292B1 (ko) | 활물질 로딩량의 구배를 가진 전극을 포함하는 전극조립체 | |
KR100858416B1 (ko) | 안전성이 향상된 리튬 이차전지 | |
KR101262086B1 (ko) | 내부 단락을 방지할 수 있는 구조의 이차전지 | |
US20230261185A1 (en) | Sacrificial Positive Electrode Material With Reduced Gas Emissions, And Lithium Secondary Battery Comprising Same | |
KR102074302B1 (ko) | 활물질 도포 유도 부재를 포함하는 이차전지용 전극 시트 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20220808 Address after: Seoul, South Kerean Applicant after: LG Energy Solution,Ltd. Address before: Seoul, South Kerean Applicant before: LG CHEM, Ltd. |
|
TA01 | Transfer of patent application right |