JP4982866B2 - 全固体リチウム電池 - Google Patents
全固体リチウム電池 Download PDFInfo
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- JP4982866B2 JP4982866B2 JP2007524042A JP2007524042A JP4982866B2 JP 4982866 B2 JP4982866 B2 JP 4982866B2 JP 2007524042 A JP2007524042 A JP 2007524042A JP 2007524042 A JP2007524042 A JP 2007524042A JP 4982866 B2 JP4982866 B2 JP 4982866B2
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- Prior art keywords
- solid
- lithium
- positive electrode
- ion conductive
- lithium ion
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- 229910052744 lithium Inorganic materials 0.000 title claims description 144
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 137
- 239000007787 solid Substances 0.000 title claims description 59
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 94
- 229910001416 lithium ion Inorganic materials 0.000 claims description 94
- 239000007774 positive electrode material Substances 0.000 claims description 77
- 239000007784 solid electrolyte Substances 0.000 claims description 77
- 239000011247 coating layer Substances 0.000 claims description 56
- 239000000843 powder Substances 0.000 claims description 50
- 239000010410 layer Substances 0.000 claims description 48
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 47
- 239000011248 coating agent Substances 0.000 claims description 33
- 238000000576 coating method Methods 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 26
- 239000003792 electrolyte Substances 0.000 claims description 23
- 150000002500 ions Chemical class 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 20
- 239000010409 thin film Substances 0.000 claims description 20
- -1 iodide ions Chemical class 0.000 claims description 17
- 239000010936 titanium Substances 0.000 claims description 14
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 229910021437 lithium-transition metal oxide Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910018871 CoO 2 Inorganic materials 0.000 claims description 3
- 239000010408 film Substances 0.000 claims description 3
- 239000010955 niobium Substances 0.000 claims description 3
- 238000006479 redox reaction Methods 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 229910015207 Ni1/3Co1/3Mn1/3O Inorganic materials 0.000 claims description 2
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims description 2
- 229910001386 lithium phosphate Inorganic materials 0.000 claims description 2
- 229910052912 lithium silicate Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 2
- 239000000075 oxide glass Substances 0.000 claims description 2
- RIUWBIIVUYSTCN-UHFFFAOYSA-N trilithium borate Chemical compound [Li+].[Li+].[Li+].[O-]B([O-])[O-] RIUWBIIVUYSTCN-UHFFFAOYSA-N 0.000 claims description 2
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 claims description 2
- 150000003568 thioethers Chemical class 0.000 claims 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 53
- 229910011458 Li4/3 Ti5/3O4 Inorganic materials 0.000 description 24
- 239000002245 particle Substances 0.000 description 17
- 238000010438 heat treatment Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 15
- 239000000126 substance Substances 0.000 description 13
- 239000011572 manganese Substances 0.000 description 12
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 11
- 229910012465 LiTi Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 229910013641 LiNbO 3 Inorganic materials 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 239000002203 sulfidic glass Substances 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 8
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 7
- LHJOPRPDWDXEIY-UHFFFAOYSA-N indium lithium Chemical compound [Li].[In] LHJOPRPDWDXEIY-UHFFFAOYSA-N 0.000 description 7
- 229910003480 inorganic solid Inorganic materials 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 229910000733 Li alloy Inorganic materials 0.000 description 6
- 150000004703 alkoxides Chemical class 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000001989 lithium alloy Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 239000007772 electrode material Substances 0.000 description 4
- 239000002241 glass-ceramic Substances 0.000 description 4
- 229910052738 indium Inorganic materials 0.000 description 4
- 229910052746 lanthanum Inorganic materials 0.000 description 4
- 239000011244 liquid electrolyte Substances 0.000 description 4
- 239000007773 negative electrode material Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 229910018091 Li 2 S Inorganic materials 0.000 description 3
- 229910009290 Li2S-GeS2-P2S5 Inorganic materials 0.000 description 3
- 229910009110 Li2S—GeS2—P2S5 Inorganic materials 0.000 description 3
- 229910013043 Li3PO4-Li2S-SiS2 Inorganic materials 0.000 description 3
- 229910013035 Li3PO4-Li2S—SiS2 Inorganic materials 0.000 description 3
- 229910012810 Li3PO4—Li2S-SiS2 Inorganic materials 0.000 description 3
- 229910012797 Li3PO4—Li2S—SiS2 Inorganic materials 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000003411 electrode reaction Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Chemical compound [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 239000005518 polymer electrolyte Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007086 side reaction Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 150000004763 sulfides Chemical class 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- RBORURQQJIQWBS-QVRNUERCSA-N (4ar,6r,7r,7as)-6-(6-amino-8-bromopurin-9-yl)-2-hydroxy-2-sulfanylidene-4a,6,7,7a-tetrahydro-4h-furo[3,2-d][1,3,2]dioxaphosphinin-7-ol Chemical compound C([C@H]1O2)OP(O)(=S)O[C@H]1[C@@H](O)[C@@H]2N1C(N=CN=C2N)=C2N=C1Br RBORURQQJIQWBS-QVRNUERCSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910020599 Co 3 O 4 Inorganic materials 0.000 description 2
- 229910018119 Li 3 PO 4 Inorganic materials 0.000 description 2
- 229910007860 Li3.25Ge0.25P0.75S4 Inorganic materials 0.000 description 2
- 239000002228 NASICON Substances 0.000 description 2
- 229910021383 artificial graphite Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000002847 impedance measurement Methods 0.000 description 2
- IDBFBDSKYCUNPW-UHFFFAOYSA-N lithium nitride Chemical compound [Li]N([Li])[Li] IDBFBDSKYCUNPW-UHFFFAOYSA-N 0.000 description 2
- 238000003701 mechanical milling Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004549 pulsed laser deposition Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910005839 GeS 2 Inorganic materials 0.000 description 1
- 229910018127 Li 2 S-GeS 2 Inorganic materials 0.000 description 1
- 229910018133 Li 2 S-SiS 2 Inorganic materials 0.000 description 1
- 229910012850 Li3PO4Li4SiO4 Inorganic materials 0.000 description 1
- 229910012793 Li3PO4—Li2S—SiS Inorganic materials 0.000 description 1
- 229910010640 Li6BaLa2Ta2O12 Inorganic materials 0.000 description 1
- 229910010093 LiAlO Inorganic materials 0.000 description 1
- 229910010833 LiI-Li2S-SiS2 Inorganic materials 0.000 description 1
- 229910010855 LiI—Li2S—SiS2 Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- 229910007052 Li—Ti—O Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229910020346 SiS 2 Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000002447 crystallographic data Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910021397 glassy carbon Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001453 impedance spectrum Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 229910002102 lithium manganese oxide Inorganic materials 0.000 description 1
- AZVCGYPLLBEUNV-UHFFFAOYSA-N lithium;ethanolate Chemical compound [Li+].CC[O-] AZVCGYPLLBEUNV-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- ZTILUDNICMILKJ-UHFFFAOYSA-N niobium(v) ethoxide Chemical compound CCO[Nb](OCC)(OCC)(OCC)OCC ZTILUDNICMILKJ-UHFFFAOYSA-N 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- AHKZTVQIVOEVFO-UHFFFAOYSA-N oxide(2-) Chemical compound [O-2] AHKZTVQIVOEVFO-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000009790 rate-determining step (RDS) Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- HSXKFDGTKKAEHL-UHFFFAOYSA-N tantalum(v) ethoxide Chemical compound [Ta+5].CC[O-].CC[O-].CC[O-].CC[O-].CC[O-] HSXKFDGTKKAEHL-UHFFFAOYSA-N 0.000 description 1
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- 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
- H01M4/139—Processes of manufacture
-
- 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
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0088—Composites
- H01M2300/0091—Composites in the form of mixtures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0088—Composites
- H01M2300/0094—Composites in the form of layered products, e.g. coatings
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
- Y10T29/49115—Electric battery cell making including coating or impregnating
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
(1)K.Takada,N.Aotani,K.Iwamoto,S.Kondo,Solid State Ionics,86-88,pp.877-882(1996)
(2)A.Hayashi,M.Tatsumisago,T.Minami,J.Electrochem.Soc.,146,pp.3472-3475(1999)(3)T.Minami,A.Hayashi,M.Tatsumisago,Solid State Ionics,136-137,pp.1015-1023(2000)
(4)R.Kanno,M.Murayama,J.Electrochem.Soc.,148,pp.A742-A746(2001)
(5)K.Iio,A.Hayashi,H.Morimoto,M.Tatsumisago,T.Minami,Chem.Mater.,14,pp.2444-2449(2002)
(6)N.Machida,H.Maeda,H.Peng,T.Shigematsu,J.Electrochem.Soc.,149,pp.A688-A639(2002)
Claims (15)
- 負極、電解質、及び正極からなり、電解質としてリチウムイオン伝導性固体電解質を用いた全固体リチウム電池において、
前記リチウムイオン伝導性固体電解質が硫化物を主体としたものであり、
正極活物質が、全固体リチウム電池の動作中にリチウム電極基準で3V以上の電位において酸化還元反応を示すものであり、
かつ正極活物質の表面が
実質的に電子伝導性を持たないリチウムイオン伝導性酸化物で被覆されて、該リチウムイオン伝導性酸化物が該正極活物質と該固体電解質との間に介在されていることを特徴とする全固体リチウム電池。 - 正極活物質が、リチウム遷移金属酸化物であることを特徴とする請求項1記載の全固体リチウム電池。
- リチウムイオン伝導性酸化物が、リチウムとチタンを含有する酸化物であることを特徴とする請求項1記載の全固体リチウム電池。
- 硫化物を主体としたリチウムイオン伝導性固体電解質は、室温におけるイオン伝導度が1×10-3S/cm以上であることを特徴とする請求項1記載の全固体リチウム電池。
- 硫化物を主体としたリチウムイオン伝導性固体電解質は、ヨウ化物イオンを含有しないことを特徴とする請求項1記載の全固体リチウム電池。
- 硫化物を主体としたリチウムイオン伝導性固体電解質は、複数種の硫化物を主体とする固体電解質からなり、リチウムイオン伝導性酸化物を被覆した正極活物質に接触する部分に用いられる硫化物を主体としたリチウムイオン伝導性固体電解質がヨウ化物イオンを含有しないことを特徴とする請求項1記載の全固体リチウム電池。
- 正極活物質が、Li 1-x CoO 2 、Li 1-x NiO 2 、Li 1-x Mn 2 O 4 、Li 1-x Ni 1/2 Mn 1/2 O 2 、Li 1-x Ni 1/3 Co 1/3 Mn 1/3 O 2 、又はLi 1-x [Ni y Li 1/3-2y/3 Mn 2/3-y/3 ]O 2 (0≦x≦1, 0<y<1/2)であることを特徴とする請求項1記載の全固体リチウム電池。
- 正極活物質が粉末又は薄膜であることを特徴とする請求項1記載の全固体リチウム電池。
- リチウムイオン伝導性酸化物が、非晶質であることを特徴とする請求項1記載の全固体リチウム電池。
- リチウムイオン伝導性酸化物が、ニオブあるいはタンタルまたはその両方、ならびにリチウムを含有することを特徴とする請求項1記載の全固体リチウム電池。
- リチウムイオン伝導性酸化物が、ケイ酸リチウム、リン酸リチウム、ホウ酸リチウムから選ばれるリチウム含有酸化物ガラスであることを特徴とする請求項1記載の全固体リチウム電池。
- 前記被覆の厚さが1nm〜100nmであることを特徴とする請求項1記載の全固体リチウム電池。
- リチウムイオン伝導性酸化物で被覆されている正極活物質粉末と硫化物を主体としたリチウムイオン伝導性固体電解質粉末の混合物を正極とし、硫化物を主体としたリチウムイオン伝導性固体電解質粉末層をセパレータとする請求項1記載の全固体リチウム電池。
- 正極活物質表面にリチウムイオン伝導性酸化物の被覆層を構成する元素を含有する溶液を塗布し、400℃以下の温度で加熱することを特徴とする請求項1記載の全固体リチウム電池に用いられる被覆層を設けた正極活物質の製造方法。
- 正極活物質表面にリチウムイオン伝導性酸化物の被覆層を物理的成膜法で形成することを特徴とする請求項1記載の全固体リチウム電池に用いられる被覆層を設けた正極活物質の製造方法。
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Also Published As
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US7993782B2 (en) | 2011-08-09 |
US20090081554A1 (en) | 2009-03-26 |
WO2007004590A1 (ja) | 2007-01-11 |
JPWO2007004590A1 (ja) | 2009-01-29 |
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