CN107845829A - A kind of two-layer compound diaphragm cell and its benefit lithium method - Google Patents
A kind of two-layer compound diaphragm cell and its benefit lithium method Download PDFInfo
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- CN107845829A CN107845829A CN201710949412.3A CN201710949412A CN107845829A CN 107845829 A CN107845829 A CN 107845829A CN 201710949412 A CN201710949412 A CN 201710949412A CN 107845829 A CN107845829 A CN 107845829A
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- Prior art keywords
- lithium
- barrier film
- layer
- positive pole
- ear
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Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 197
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 190
- 150000001875 compounds Chemical class 0.000 title claims abstract description 71
- 230000008901 benefit Effects 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000004888 barrier function Effects 0.000 claims abstract description 79
- 239000003792 electrolyte Substances 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 25
- 238000000576 coating method Methods 0.000 claims description 24
- 239000011248 coating agent Substances 0.000 claims description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- -1 Super P Chemical compound 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000004425 Makrolon Substances 0.000 claims description 6
- QXYJCZRRLLQGCR-UHFFFAOYSA-N dioxomolybdenum Chemical compound O=[Mo]=O QXYJCZRRLLQGCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910021389 graphene Inorganic materials 0.000 claims description 6
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 6
- 229920000515 polycarbonate Polymers 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 239000011532 electronic conductor Substances 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 4
- 229910001416 lithium ion Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- JECYNCQXXKQDJN-UHFFFAOYSA-N 2-(2-methylhexan-2-yloxymethyl)oxirane Chemical compound CCCCC(C)(C)OCC1CO1 JECYNCQXXKQDJN-UHFFFAOYSA-N 0.000 claims description 3
- 101000598921 Homo sapiens Orexin Proteins 0.000 claims description 3
- 101001123245 Homo sapiens Protoporphyrinogen oxidase Proteins 0.000 claims description 3
- 239000004697 Polyetherimide Substances 0.000 claims description 3
- 229920002873 Polyethylenimine Polymers 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 102100029028 Protoporphyrinogen oxidase Human genes 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000006230 acetylene black Substances 0.000 claims description 3
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- 239000002048 multi walled nanotube Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 229920001601 polyetherimide Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920001021 polysulfide Polymers 0.000 claims description 3
- 239000005077 polysulfide Substances 0.000 claims description 3
- 150000008117 polysulfides Polymers 0.000 claims description 3
- 239000002109 single walled nanotube Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 2
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000005030 aluminium foil Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 2
- 229910001415 sodium ion Inorganic materials 0.000 claims description 2
- 239000013589 supplement Substances 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims 2
- 150000001336 alkenes Chemical class 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 150000005690 diesters Chemical class 0.000 claims 1
- 238000000338 in vitro Methods 0.000 claims 1
- 150000002825 nitriles Chemical class 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 5
- 230000036632 reaction speed Effects 0.000 abstract description 4
- 210000004027 cell Anatomy 0.000 description 37
- 238000005516 engineering process Methods 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000005955 Ferric phosphate Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 150000001722 carbon compounds Chemical class 0.000 description 2
- MPMSMUBQXQALQI-UHFFFAOYSA-N cobalt phthalocyanine Chemical compound [Co+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 MPMSMUBQXQALQI-UHFFFAOYSA-N 0.000 description 2
- 239000013310 covalent-organic framework Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 229940032958 ferric phosphate Drugs 0.000 description 2
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012621 metal-organic framework Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910001339 C alloy Inorganic materials 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 229910000927 Ge alloy Inorganic materials 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- OBOXTJCIIVUZEN-UHFFFAOYSA-N [C].[O] Chemical compound [C].[O] OBOXTJCIIVUZEN-UHFFFAOYSA-N 0.000 description 1
- GJEAMHAFPYZYDE-UHFFFAOYSA-N [C].[S] Chemical compound [C].[S] GJEAMHAFPYZYDE-UHFFFAOYSA-N 0.000 description 1
- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 description 1
- PAMMESUSQVJOMA-UHFFFAOYSA-L [Li].[Mn](=O)(=O)(O)O.[Ni].[Co] Chemical compound [Li].[Mn](=O)(=O)(O)O.[Ni].[Co] PAMMESUSQVJOMA-UHFFFAOYSA-L 0.000 description 1
- ZKBAHUCGLZXDPQ-UHFFFAOYSA-N [Li].[Ni].[Si](O)(O)(O)O Chemical compound [Li].[Ni].[Si](O)(O)(O)O ZKBAHUCGLZXDPQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910000152 cobalt phosphate Inorganic materials 0.000 description 1
- ZBDSFTZNNQNSQM-UHFFFAOYSA-H cobalt(2+);diphosphate Chemical compound [Co+2].[Co+2].[Co+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O ZBDSFTZNNQNSQM-UHFFFAOYSA-H 0.000 description 1
- INPLXZPZQSLHBR-UHFFFAOYSA-N cobalt(2+);sulfide Chemical compound [S-2].[Co+2] INPLXZPZQSLHBR-UHFFFAOYSA-N 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- ASTZLJPZXLHCSM-UHFFFAOYSA-N dioxido(oxo)silane;manganese(2+) Chemical compound [Mn+2].[O-][Si]([O-])=O ASTZLJPZXLHCSM-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 229910052635 ferrosilite Inorganic materials 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- SBWRUMICILYTAT-UHFFFAOYSA-K lithium;cobalt(2+);phosphate Chemical compound [Li+].[Co+2].[O-]P([O-])([O-])=O SBWRUMICILYTAT-UHFFFAOYSA-K 0.000 description 1
- ILXAVRFGLBYNEJ-UHFFFAOYSA-K lithium;manganese(2+);phosphate Chemical compound [Li+].[Mn+2].[O-]P([O-])([O-])=O ILXAVRFGLBYNEJ-UHFFFAOYSA-K 0.000 description 1
- LRVBJNJRKRPPCI-UHFFFAOYSA-K lithium;nickel(2+);phosphate Chemical compound [Li+].[Ni+2].[O-]P([O-])([O-])=O LRVBJNJRKRPPCI-UHFFFAOYSA-K 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 229910000159 nickel phosphate Inorganic materials 0.000 description 1
- VIAPNRBXEJNZKV-UHFFFAOYSA-N nickel silicic acid Chemical compound [Ni].[Si](O)(O)(O)O VIAPNRBXEJNZKV-UHFFFAOYSA-N 0.000 description 1
- JOCJYBPHESYFOK-UHFFFAOYSA-K nickel(3+);phosphate Chemical compound [Ni+3].[O-]P([O-])([O-])=O JOCJYBPHESYFOK-UHFFFAOYSA-K 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- CADICXFYUNYKGD-UHFFFAOYSA-N sulfanylidenemanganese Chemical compound [Mn]=S CADICXFYUNYKGD-UHFFFAOYSA-N 0.000 description 1
- WWNBZGLDODTKEM-UHFFFAOYSA-N sulfanylidenenickel Chemical compound [Ni]=S WWNBZGLDODTKEM-UHFFFAOYSA-N 0.000 description 1
- RCYJPSGNXVLIBO-UHFFFAOYSA-N sulfanylidenetitanium Chemical compound [S].[Ti] RCYJPSGNXVLIBO-UHFFFAOYSA-N 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910021561 transition metal fluoride Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- H01M50/463—Separators, membranes or diaphragms characterised by their shape
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of two-layer compound diaphragm cell, including housing, positioned at the positive pole, negative pole and electrolyte of enclosure interior, it is characterised in that, two-layer compound barrier film is provided between the positive pole and negative pole, the two-layer compound barrier film isolates the positive pole and negative insulation；The two-layer compound barrier film includes the first barrier film, the second barrier film and active lithium layer, and the active lithium layer is between first barrier film and the second barrier film；Also include positive pole ear, negative lug and mend lithium electrode ear, the positive pole ear, negative lug and mend the other end of lithium electrode ear and stretch out the housing outer or the positive pole ear and the other end of negative lug is stretched out outside the housing.Reaction speed is controllable when two-layer compound diaphragm cell provided by the invention mends lithium, and embedding lithium speed is uniform, can be achieved uniformly to mend lithium, improves the first efficiency for charge-discharge and energy density of battery；It is simple to operate to mend lithium, cumbersome benefit lithium flow can be avoided, it is time saving and energy saving；And whole battery preparation technique is had no effect, cost is relatively low.
Description
Technical field
The present invention relates to field of new energy technologies, more particularly to a kind of two-layer compound diaphragm cell and its benefit lithium method.
Background technology
Lithium ion battery has high voltage, high-energy-density, long circulation life and security performance compared to other secondary cells
The advantage such as good, turns into most widely used rechargeable battery, such as large-scale as portable type electronic product power supply, electric automobile etc.
The electrokinetic cell of mobile device.Ripe cell negative electrode material is mainly graphite type material at present, by development for many years, its energy
Metric density is had been developed that to horizontal close to theoretical value（Theoretical specific capacity 372mAh/g）, so as to limit entering for battery energy density
One step improves, and can not meet the needs of following battery is to high-energy-density.
Nano-silicon（Theoretical capacity 4200mAh/g）With carbon compound cathode or the sub- silicon of oxidation（Theoretical capacity 1600mAh/g）
It is considered as third generation negative pole with carbon compound cathode, and preparation cost is cheap, therefore as the one of the great potential for substituting graphite
Class negative material.Wherein aoxidize that sub- silicon cycling is more preferable, but the negative pole for aoxidizing sub- silicon materials can consume one in initial charge
Divide from positive pole to form SEI films and participate in some irreversible reactions, more, cause can be consumed in embedding lithium reaction first
Make first cycle efficiency for charge-discharge relatively low, only 50% ~ 77%.
The usually used consumption problem for mending lithium mode to solve at present.Have in existing benefit lithium technology by lithium powder and electrode
Material directly contacts, and is covered in negative plate surface using by metallic lithium powder, battery is made in winding, the method for then irrigating electrolyte
Prepare battery.It is very active metal yet with lithium, after lithium metal is added into electrolyte by this method, reaction speed
Quickly, embedding lithium speed is uncontrollable, and the SEI films resulted in are unstable, easily causes negative material rupture, it is poor to mend lithium effect.
In addition barrier film can be pierced through and cause the potential safety hazard of battery by remaining in some lithium metal particles of electrode surface.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of two-layer compound diaphragm cell and its benefit lithium side
Method, reaction speed is uncontrollable when can be effectively prevented from mending lithium, can reach the purpose for uniformly mending lithium, greatly improves the head of battery
Cycle efficiency for charge-discharge and energy density.Whole battery preparation technique is simple simultaneously, and benefit lithium is simple to operate, and cost is relatively low.
To achieve these goals, the present invention is using technical scheme in detail below：
The present invention provides a kind of two-layer compound diaphragm cell, including housing, positioned at the positive pole, negative pole and electrolyte of enclosure interior,
Characterized in that, being provided with two-layer compound barrier film between the positive pole and negative pole, the two-layer compound barrier film makes the positive pole
Isolate with negative insulation；The two-layer compound barrier film includes the first barrier film, the second barrier film and active lithium layer, and the active lithium layer is situated between
Between first barrier film and the second barrier film；Also include positive pole ear, negative lug and mend lithium electrode ear, the positive pole ear,
One end of negative lug and benefit lithium electrode ear is conductively connected with the positive pole, negative pole and active lithium layer respectively, the positive pole ear, is born
Pole lug and mend the other end of lithium electrode ear and stretch out the housing outer or the positive pole ear and the other end of negative lug is stretched
Go out outside the housing, the other end for mending lithium electrode ear is connected with the positive pole ear or negative lug in the enclosure interior.
Further, the benefit lithium electrode ear directly contacts connection with the active lithium layer.
Further, in first barrier film and the active lithium layer and/or in second barrier film and the active lithium
Conductive coating is provided between layer, the conductive coating contacts with the active lithium layer, the benefit lithium electrode ear and the conductive painting
Layer contact connection.
Further, the conductive coating contains electronic conductor, the electronic conductor be carbon black, Ke Qin carbon, acetylene black,
Super P, graphite, graphene, graphene oxide, COF, MOF, single wall or multi-walled carbon nanotube, copper powder, aluminium powder, nickel, cobalt,
One or more in titanium, iron, ruthenic oxide and molybdenum dioxide.
Further, the thickness of first barrier film is 5-30 μm；The thickness of second barrier film is 0.1-12 μm；It is described
The base material of first barrier film and the second barrier film is polypropylene, polyethylene, oxirane, PPOX, Kynoar, poly- inclined fluorine
Ethene-hexafluoropropene, polymethyl methacrylate, polyacrylonitrile, polyimides, PEI, makrolon, poly- aramid fiber,
PET（PET）, polybutylene terephthalate（PBT）, polyacrylonitrile, makrolon, polysulfide acid esters and
One or more in cellulose.
Further, the active lithium layer is one or more in lithium metal or lithium and aluminium, silicon, germanium, tin and carbon
Alloy or mixture；Being shaped as the active lithium layer is any in banding, strip, ring-type or point-like；The active lithium layer
Thickness be 0.1-500 μm.
Further, the benefit lithium electrode ear is conductive carbon, copper foil, aluminium foil, stainless steel, nickel foil, copper plating nickel foil and conducting resinl
In one or more.
Further, first barrier film and/or the second barrier film in the side of the uncoated conductive coating coated with the
Two coatings, the second coating include Al2O3, it is MgO, ZnO, any one or more in boehmite or Lithium Ionic Conducting Materials.
The present invention a kind of benefit lithium method according to above-mentioned two-layer compound diaphragm cell is also provided, it is characterised in that by positive pole,
Two-layer compound barrier film, negative pole, which are cascading, is assembled into dry battery core, by positive pole ear, negative lug and the one end for mending lithium electrode ear
It is conductively connected respectively with the active lithium layer in the positive pole, negative pole and the two-layer compound barrier film, the positive pole ear, negative pole pole
The other end of ear and benefit lithium electrode ear stretches out outside the housing or only stretches the other end of the positive pole ear and negative lug
Go out outside the housing, the other end of the benefit lithium electrode ear is connected with the positive pole ear or negative lug in the enclosure interior
Connect, wherein placing the benefit lithium electrode ear being connected with active lithium layer or the only outermost in dry battery core in each two-layer compound barrier film
Placed in the two-layer compound barrier film of side and mend lithium electrode ear；Inject the electrolyte into inside dry battery core, connection positive pole, negative pole and active lithium
Layer, by the connection for mending lithium electrode ear and negative lug or positive pole ear；Lithium in active lithium layer is embedded into negative or positive electrode
In, complete to mend lithium.
Further, after injecting the electrolyte into dry battery core inside, electrolyte is immersed between both positive and negative polarity, is formed in inside battery
Path；First chemical conversion before either first be melted into after or cyclic process in, can outside batteries regulate and control it is described benefit lithium electrode ear and
Electric current between negative lug or positive pole ear, complete to mend lithium.
Further, the capacity for mending lithium is the 1% ~ 99% of full battery capacity.
Further, after completing to mend lithium, the active lithium layer will disappear or reduce, and lithium ion is conducted in positive and negative interpolar
It is unaffected.
Further, this method can be used in sodium-ion battery, Magnesium ion battery, Zinc ion battery and aluminium ion battery appointing
A kind of supplement for carrying out corresponding ion.
The beneficial effects of the present invention are：Reaction speed is controllable when battery provided by the invention mends lithium, and embedding lithium speed is uniform,
It can be achieved uniformly to mend lithium, improve the first cycle efficiency for charge-discharge and energy density of battery；It is simple to operate to mend lithium, can avoid numerous
Trivial benefit lithium flow, it is time saving and energy saving；And whole battery preparation technique is had no effect, cost is relatively low.
Brief description of the drawings
Fig. 1 is the schematic diagram of the two-layer compound diaphragm cell of the embodiment of the present invention one；
Fig. 2 is the schematic diagram of the two-layer compound diaphragm cell of the embodiment of the present invention two.
Wherein, description of reference numerals is as follows：
1- housings, 2- positive poles, 3- negative poles, the barrier films of 4- first, 5- lithium metals, the barrier films of 6- second, 7- positive pole ears, 8- mend lithium electrode
Ear, 9- negative lugs, 10- conductive coatings.
Embodiment
In order that those skilled in the art more fully understand technical scheme, with reference to specific embodiment to this
Invention is described in further detail.It is exemplary for note that the embodiments described below, is only used for explaining the present invention, and
It is not considered as limiting the invention.
Embodiment one
As shown in figure 1, the present embodiment provides a kind of two-layer compound diaphragm cell, including housing 1, and inside housing 1
Positive pole 2, negative pole 3, two-layer compound barrier film and electrolyte（Not shown in figure）.The two-layer compound barrier film includes the first barrier film 4, lived
Property the barrier film 6 of lithium layer 5 and second, and between positive pole 2 and negative pole 3, and isolate the positive pole and negative insulation, wherein, it is living
Property lithium layer 5 is between the first barrier film 4 and the second barrier film 6.Positive pole 2, negative pole 3 and active lithium layer 5 are respectively accordingly and positive pole ear
7th, mend lithium electrode ear 8 and one end of negative lug 9 is conductively connected, it is outer or only by positive pole ear and negative that the other end can stretch out housing 1
Pole lug is stretched out outside the housing, is mended lithium electrode ear and is welded with positive pole ear or negative lug in enclosure interior.Mend lithium electrode ear 8 with
Active lithium layer 5 directly contacts connection, is connected in or beyond battery with positive pole ear 7 or negative lug 9, carries out benefit lithium.
First barrier film 4 plays the isolated insulation effect between positive pole and negative pole, thickness is excellent from the barrier film commonly used in battery
Elect 5-30 μm as, the porosity of barrier film is between 35%~60%；The thickness of second barrier film 6 is much smaller than the first barrier film 4, primarily serves
Isolate the effect of active lithium layer and negative or positive electrode, thickness is preferably 0.1-12 μm, and the porosity of barrier film is between 35%~95%.
Two-layer compound diaphragm cell provided by the invention activity lithium layer when mending lithium is but logical due to not contacted directly with negative or positive electrode
Cross lug to be attached, benefit lithium speed is controllable, and it is uniform to mend lithium；After the completion of mending lithium, the disappearance or reduction of adjoint active lithium layer, the
Two barrier films 6 are combined with each other with the first barrier film 4, and the second barrier film 6 then plays to be acted on the identical of the first barrier film 4, in battery
Portion's structure and performance are had no effect.
In the two-layer compound diaphragm cell according to the present embodiment, the positive electrode is cobalt acid lithium, LiMn2O4, nickel
Cobalt manganic acid lithium, nickel cobalt lithium aluminate, lithium-rich oxide, nickel ion doped, LiFePO4, lithium manganese phosphate, cobalt phosphate lithium, nickel phosphate
Lithium, lithium ferric manganese phosphate, ferric phosphate, manganese phosphate, cobalt phosphate, nickel phosphate, ferric metasilicate lithium, manganese silicate of lithium, cobaltous silicate lithium, silicic acid nickel
Lithium, ferrosilite, manganous silicate, cobaltous silicate, silicic acid nickel, manganese dioxide, iron sulfide, manganese sulfide, cobalt sulfide, nickel sulfide, titanium sulfide, sulphur
One or more in sour iron, ferric phosphate, sulfurized polyacrylonitrile, sulphur carbon and oxyvanadium compound.
In the two-layer compound diaphragm cell according to the present embodiment, the negative material, which can be selected, to be included but is not limited to
Such as native graphite, Delanium, soft carbon, hard carbon, lithium metal, siliceous, tin, germanium, zinc, aluminium, boron, the material of magnesium elements, transition
One in metal oxide, transient metal sulfide, transition metal fluorides, transition metal nitride, transition metal phosphide
Kind is a variety of, wherein what the transition metal can be in Cr, Cu, Fe, Co, Ni, Nb, V, Mo, W and Ru is a kind of or more
Kind is compound.
In the two-layer compound diaphragm cell according to the present embodiment, the base material of the first barrier film 4 and the second barrier film 6 is poly-
Propylene, polyethylene, oxirane, PPOX, Kynoar, Kynoar-hexafluoropropene, poly-methyl methacrylate
Ester, polyacrylonitrile, polyimides, PEI, makrolon, poly- aramid fiber, PET（PET）, poly- pair
Terephtha-late（PBT）, polyacrylonitrile, makrolon, the one or more in polysulfide acid esters and cellulose.
In the two-layer compound diaphragm cell according to the present embodiment, the active lithium layer 5 be lithium metal or lithium with
One or more alloys or physical mixed in aluminium, silicon, germanium, tin and carbon；Active lithium layer is shaped as banding, strip, ring
It is any in shape or point-like；Active lithium thickness degree is preferably 0.1-500 μm.Certainly also active lithium layer can be replaced with active sodium
Layer, activated carbon layer, it is any in active zinc layers and active aluminium lamination etc.；So as to realize carried out with sodium, magnesium, zinc, aluminium ion etc. it is corresponding
The benefit ion manipulation of battery.
In the two-layer compound diaphragm cell according to the present embodiment, the benefit lithium electrode ear is conductive carbon, copper foil, aluminium
One or more in paper tinsel, stainless steel, nickel foil, copper plating nickel foil and conducting resinl.
In the two-layer compound diaphragm cell according to the present embodiment, the electrolyte can be liquid electrolyte or polymerization
Thing electrolyte.
The present embodiment also provides a kind of benefit lithium method of above-mentioned two-layer compound diaphragm cell：
First, battery preparation is carried out, positive pole, two-layer compound barrier film, negative pole need to be only cascading as dry battery core, placed
Led respectively with the active lithium layer in positive pole, negative pole and two-layer compound barrier film one end of positive pole ear, negative lug and benefit lithium electrode ear
Electrical connection, the other end are stretched out outside the housing, wherein placing what is be connected with active lithium layer in each two-layer compound barrier film
Mend lithium electrode ear or only placed in dry battery core in outermost two-layer compound barrier film and mend lithium electrode ear；, will after dry battery core is obtained
Inside the dry battery core of electrolyte injection, path, connection positive pole, negative pole and active lithium layer are formed in inside battery；By mending lithium electrode ear
With the connection of negative lug or positive pole ear；It is embedded into the lithium in active lithium layer is controllable in negative or positive electrode, completes to mend
Lithium.Two-layer compound diaphragm cell of the present invention can be that winding process be alternatively lamination process or its combination, according to being made
The type of standby battery is determined.
The benefit lithium method of two-layer compound diaphragm cell according to the present embodiment, is injected the electrolyte into inside dry battery core
Afterwards, electrolyte is immersed between both positive and negative polarity, and path is formed in inside battery；After being either melted into first before being melted into first or circulate
During, it can regulate and control mend the electric current between lithium electrode ear and negative lug or positive pole ear in outside batteries, such as lithium can mended
Resistance is placed between lug and negative lug or positive pole ear and carries out current regulation, so as to complete to mend lithium.
The benefit lithium method of two-layer compound diaphragm cell according to the present embodiment, after the completion of the benefit lithium, it will can mend
The part that lithium electrode ear is located at outside battery container removes.
The benefit lithium method of two-layer compound diaphragm cell according to the present embodiment, the group of above-mentioned two-layer compound diaphragm cell
Dress method, it is identical for the assemble method of existing commercial batteries barrier film with barrier film.
The benefit lithium method of two-layer compound diaphragm cell according to the present embodiment, only by positive pole ear and it can also bear certainly
Pole lug is stretched out outside the housing, and positive pole ear or negative lug are connected with mending lithium electrode ear in enclosure interior.
The benefit lithium method of two-layer compound diaphragm cell according to the present embodiment, after the completion of lithium is mended, along with activity
The disappearance or reduction of lithium layer, lithium ion is set to be conducted in positive and negative interpolar unaffected.The capacity of the present invention mended lithium and refer to mend lithium
For the 1% ~ 99% of full battery capacity.
The benefit lithium method of two-layer compound diaphragm cell according to the present embodiment, the system of above-mentioned two-layer compound diaphragm cell
Standby technique does not increase the complexity of battery preparation, and easily carries out benefit lithium operation of the battery in first cycle discharge and recharge, only
Lithium electrode ear need to will be mended to be attached with negative lug or positive pole ear as needed.Active lithium layer in two of which barrier film can
Decompose, participation forms SEI films, plays a part of mending lithium, declines so as to reduce capacity of the battery after first cycle discharge and recharge.Entirely
It is simple to operate to mend lithium, and is had little to no effect for the processing and fabricating of battery, it is low to mend lithium cost.
The benefit lithium method of two-layer compound diaphragm cell according to the present embodiment, will just extremely cobalt acid lithium, negative pole be silicon
After the battery of oxygen carbon carries out benefit lithium according to benefit lithium method of the present invention, compared with not carrying out mending the situation of lithium, the first cycle fills
Discharging efficiency is lifted to 94% from 77%.
Embodiment two
As shown in Fig. 2 the two-layer compound diaphragm cell that the present embodiment provides, can also be between the first barrier film 4 and active lithium layer 5
And/or second set conductive coating 10 between barrier film 6 and active lithium layer 5, the conductive coating 10 connects with the active lithium layer 5
Touch.Mend lithium electrode ear 8 no longer directly to contact with active lithium layer 5, but connection is directly contacted with conductive coating 10.The present embodiment provides
Two-layer compound diaphragm cell remaining structure it is identical with embodiment one.
The two-layer compound diaphragm cell provided according to the present embodiment, when mending lithium, applied caused by active lithium layer 5 by conduction
Layer 10 conducts to lithium electrode ear is mended, and then positive pole ear or negative lug by being connected with benefit lithium electrode ear pass to negative or positive electrode
Send.Conductive coating 10 further can effectively slow down embedding lithium speed when mending lithium, make benefit lithium more uniform.
Two-layer compound diaphragm cell according to the present embodiment, conductive coating 10 contain electronic conductor, and electronic conductor is
Carbon black, Ke Qin carbon, acetylene black, Super P, graphite, graphene, graphene oxide, COF, MOF, single wall or multi-wall carbon nano-tube
One or more in pipe, copper powder, aluminium powder, nickel, cobalt, titanium, iron, ruthenic oxide and molybdenum dioxide.
Two-layer compound diaphragm cell according to the present embodiment, the first barrier film and/or the second barrier film of the invention are uncoated
The side of conductive coating can coat including Al as needed2O3Deng the second coating of oxide or ionic conductor material, described second
Coating can increase the heat endurance of the barrier film and suppress Li dendrite.
Two-layer compound diaphragm cell according to the present embodiment, be provided with conductive coating the first barrier film or second every
It film, can isolate with positive pole and/or negative insulation, or connection or micro-short circuit between positive pole and/or negative pole be present.
The present embodiment also provides a kind of benefit lithium method of above-mentioned two-layer compound diaphragm cell, when carrying out battery assembling, only
Positive pole, the two-layer compound barrier film, the negative pole that are provided with conductive coating need to be cascading as dry battery core；Remaining step and side
Method is completely the same as embodiment one.
In summary, two-layer compound diaphragm cell provided by the invention and its benefit lithium method, it is possible to achieve mend lithium well
Effect, greatly improve the first cycle efficiency for charge-discharge and energy density of battery；It is simple to operate to mend lithium, cumbersome benefit can be avoided
Lithium flow, it is time saving and energy saving；The preparation technology of battery is had little to no effect, cost is relatively low.
In the description of the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or implies relative importance or imply the quantity of the technical characteristic indicated by indicating.Thus, define " the
One ", one or more this feature can be expressed or be implicitly included to the feature of " second ".In the description of the invention,
" multiple " are meant that two or more, unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification, meanwhile, for those of ordinary skill in the art, the think of according to the application
Think, in specific embodiments and applications there will be changes.
Claims (13)
1. a kind of two-layer compound diaphragm cell, including housing, positioned at the positive pole, negative pole and electrolyte of enclosure interior, its feature exists
In being provided with two-layer compound barrier film between the positive pole and negative pole, the two-layer compound barrier film makes the positive pole and negative pole exhausted
Edge is isolated；The two-layer compound barrier film includes the first barrier film, the second barrier film and active lithium layer, and the active lithium layer is between described
Between one barrier film and the second barrier film；Also include positive pole ear, negative lug and mend lithium electrode ear, the positive pole ear, negative lug
With mend lithium electrode ear one end be conductively connected respectively with the positive pole, negative pole and active lithium layer, the positive pole ear, negative lug and
The other end of benefit lithium electrode ear stretches out outside the housing or the positive pole ear and the other end of the negative lug stretching shell
In vitro, the other end for mending lithium electrode ear is connected with the positive pole ear or negative lug in the enclosure interior.
2. two-layer compound diaphragm cell according to claim 1, it is characterised in that the benefit lithium electrode ear directly with the work
Property lithium layer contact connection.
3. two-layer compound diaphragm cell according to claim 1, it is characterised in that in first barrier film and the activity
Lithium layer and/or conductive coating is provided between second barrier film and the active lithium layer, the conductive coating and the work
Property lithium layer contact, it is described benefit lithium electrode ear contact connection with the conductive coating.
4. two-layer compound diaphragm cell according to claim 3, it is characterised in that the conductive coating, which contains electronics, leads
Body,
The electronic conductor be carbon black, Ke Qin carbon, acetylene black, Super P, graphite, graphene, graphene oxide, COF, MOF,
One or more in single wall or multi-walled carbon nanotube, copper powder, aluminium powder, nickel, cobalt, titanium, iron, ruthenic oxide and molybdenum dioxide.
5. the two-layer compound diaphragm cell according to Claims 2 or 3, it is characterised in that the thickness of first barrier film is
5-30μm；The thickness of second barrier film is 0.1-12 μm；The base material of first barrier film and the second barrier film is polypropylene, poly- second
Alkene, oxirane, PPOX, Kynoar, Kynoar-hexafluoropropene, polymethyl methacrylate, polypropylene
Nitrile, polyimides, PEI, makrolon, poly- aramid fiber, PET（PET）, poly terephthalic acid fourth
Diester（PBT）, polyacrylonitrile, makrolon, the one or more in polysulfide acid esters and cellulose.
6. the two-layer compound diaphragm cell according to Claims 2 or 3, it is characterised in that the active lithium layer is lithium metal
Either lithium and one or more alloys or mixture in aluminium, silicon, germanium, tin and carbon；The active lithium layer is shaped as band
It is any in shape, strip, ring-type or point-like；The thickness of the active lithium layer is 0.1-500 μm.
7. the two-layer compound diaphragm cell according to Claims 2 or 3, it is characterised in that the benefit lithium electrode ear be conductive carbon,
One or more in copper foil, aluminium foil, stainless steel, nickel foil, copper plating nickel foil and conducting resinl.
8. the two-layer compound diaphragm cell according to claim 6 or 7, it is characterised in that first barrier film and/or second
Barrier film is coated with second coating in the side of the uncoated conductive coating, and the second coating includes Al2O3, it is MgO, ZnO, vigorous
It is any one or more in nurse stone or Lithium Ionic Conducting Materials.
A kind of 9. benefit lithium method of the two-layer compound diaphragm cell according to claim 1-8, it is characterised in that by positive pole, double
Layer composite diaphragm, negative pole are cascading and are assembled into dry battery core, by positive pole ear, negative lug and the one end point for mending lithium electrode ear
It is not conductively connected with the active lithium layer in the positive pole, negative pole and the two-layer compound barrier film, the positive pole ear, negative lug
Stretch out outside the housing or only by the positive pole ear and the other end of negative lug and stretch out with the other end for mending lithium electrode ear
Outside the housing, the other end of the benefit lithium electrode ear is connected with the positive pole ear or negative lug in the enclosure interior,
The benefit lithium electrode ear that is connected with active lithium layer or the only outermost in battery core is done are placed wherein in each two-layer compound barrier film
Two-layer compound barrier film in place mend lithium electrode ear；Inject the electrolyte into inside dry battery core, connection positive pole, negative pole and active lithium layer,
By the connection for mending lithium electrode ear and negative lug or positive pole ear；Lithium in active lithium layer is embedded into negative or positive electrode,
Complete to mend lithium.
10. benefit lithium method according to claim 9, it is characterised in that after injecting the electrolyte into dry battery core inside, electrolyte
Immerse between both positive and negative polarity, path is formed in inside battery；, can after being either melted into first before being melted into first or in cyclic process
In the outside batteries regulation and control electric current mended between lithium electrode ear and negative lug or positive pole ear, complete to mend lithium.
11. benefit lithium method according to claim 10, it is characterised in that the capacity for mending lithium is the 1% of full battery capacity
~99%。
12. benefit lithium method according to claim 10, it is characterised in that after completing to mend lithium, the active lithium layer will disappear
Lose or reduce, lithium ion is conducted in positive and negative interpolar unaffected.
13. benefit lithium method according to claim 11, it is characterised in that this method can be used for sodium-ion battery, magnesium ion
Any supplement for carrying out corresponding ion in battery, Zinc ion battery and aluminium ion battery.
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