JP2004039642A - リチウム二次電池及びその製造方法 - Google Patents
リチウム二次電池及びその製造方法 Download PDFInfo
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- JP2004039642A JP2004039642A JP2003274506A JP2003274506A JP2004039642A JP 2004039642 A JP2004039642 A JP 2004039642A JP 2003274506 A JP2003274506 A JP 2003274506A JP 2003274506 A JP2003274506 A JP 2003274506A JP 2004039642 A JP2004039642 A JP 2004039642A
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 46
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000003792 electrolyte Substances 0.000 claims abstract description 25
- 229920000642 polymer Polymers 0.000 claims abstract description 22
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 15
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 14
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 14
- 239000011356 non-aqueous organic solvent Substances 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000002441 reversible effect Effects 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000007773 negative electrode material Substances 0.000 claims abstract description 7
- 239000007774 positive electrode material Substances 0.000 claims abstract description 7
- -1 LiGaCl 4 Inorganic materials 0.000 claims description 31
- 150000002430 hydrocarbons Chemical group 0.000 claims description 13
- 229930195735 unsaturated hydrocarbon Natural products 0.000 claims description 13
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 12
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims description 12
- 239000003960 organic solvent Substances 0.000 claims description 12
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 11
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 10
- PYLWMHQQBFSUBP-UHFFFAOYSA-N monofluorobenzene Chemical compound FC1=CC=CC=C1 PYLWMHQQBFSUBP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 8
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 8
- DREPONDJUKIQLX-UHFFFAOYSA-N 1-[ethenyl(ethoxy)phosphoryl]oxyethane Chemical compound CCOP(=O)(C=C)OCC DREPONDJUKIQLX-UHFFFAOYSA-N 0.000 claims description 6
- 229910013870 LiPF 6 Inorganic materials 0.000 claims description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- 239000003505 polymerization initiator Substances 0.000 claims description 6
- GETTZEONDQJALK-UHFFFAOYSA-N (trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=CC=C1 GETTZEONDQJALK-UHFFFAOYSA-N 0.000 claims description 4
- ZZXUZKXVROWEIF-UHFFFAOYSA-N 1,2-butylene carbonate Chemical compound CCC1COC(=O)O1 ZZXUZKXVROWEIF-UHFFFAOYSA-N 0.000 claims description 4
- SEILKFZTLVMHRR-UHFFFAOYSA-N 2-phosphonooxyethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOP(O)(O)=O SEILKFZTLVMHRR-UHFFFAOYSA-N 0.000 claims description 4
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 4
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 claims description 4
- CYEDOLFRAIXARV-UHFFFAOYSA-N ethyl propyl carbonate Chemical compound CCCOC(=O)OCC CYEDOLFRAIXARV-UHFFFAOYSA-N 0.000 claims description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 4
- KKQAVHGECIBFRQ-UHFFFAOYSA-N methyl propyl carbonate Chemical compound CCCOC(=O)OC KKQAVHGECIBFRQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000012046 mixed solvent Substances 0.000 claims description 4
- 150000001491 aromatic compounds Chemical group 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 150000005678 chain carbonates Chemical class 0.000 claims description 3
- 150000005676 cyclic carbonates Chemical class 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- JDJQHVJXMXXKFO-UHFFFAOYSA-N ethyl 2-methyl-5-phenylpyrazole-3-carboxylate Chemical compound CN1C(C(=O)OCC)=CC(C=2C=CC=CC=2)=N1 JDJQHVJXMXXKFO-UHFFFAOYSA-N 0.000 claims description 3
- GNCUVFPHYFZIRH-UHFFFAOYSA-N ethyl 6-methylpyridazine-3-carboxylate Chemical compound CCOC(=O)C1=CC=C(C)N=N1 GNCUVFPHYFZIRH-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011255 nonaqueous electrolyte Substances 0.000 claims description 3
- YFEWYGFTFNHSQF-UHFFFAOYSA-N 1-[ethenyl(propoxy)phosphoryl]oxypropane Chemical compound CCCOP(=O)(C=C)OCCC YFEWYGFTFNHSQF-UHFFFAOYSA-N 0.000 claims description 2
- CQCXMYUCNSJSKG-UHFFFAOYSA-N 1-dimethoxyphosphorylethene Chemical compound COP(=O)(OC)C=C CQCXMYUCNSJSKG-UHFFFAOYSA-N 0.000 claims description 2
- MMZYCBHLNZVROM-UHFFFAOYSA-N 1-fluoro-2-methylbenzene Chemical compound CC1=CC=CC=C1F MMZYCBHLNZVROM-UHFFFAOYSA-N 0.000 claims description 2
- 229910010238 LiAlCl 4 Inorganic materials 0.000 claims description 2
- 229910010090 LiAlO 4 Inorganic materials 0.000 claims description 2
- 229910015015 LiAsF 6 Inorganic materials 0.000 claims description 2
- 229910013063 LiBF 4 Inorganic materials 0.000 claims description 2
- 229910013372 LiC 4 Inorganic materials 0.000 claims description 2
- 229910013684 LiClO 4 Inorganic materials 0.000 claims description 2
- 229910013553 LiNO Inorganic materials 0.000 claims description 2
- 229910012513 LiSbF 6 Inorganic materials 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical group COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 125000005843 halogen group Chemical group 0.000 claims description 2
- ZTEGHJIXOZLSOH-UHFFFAOYSA-N n-[[di(propan-2-yl)amino]-prop-2-enoxyphosphanyl]-n-propan-2-ylpropan-2-amine Chemical compound CC(C)N(C(C)C)P(N(C(C)C)C(C)C)OCC=C ZTEGHJIXOZLSOH-UHFFFAOYSA-N 0.000 claims description 2
- 230000000379 polymerizing effect Effects 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 239000003660 carbonate based solvent Substances 0.000 claims 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims 1
- 150000002170 ethers Chemical class 0.000 claims 1
- 150000002576 ketones Chemical class 0.000 claims 1
- 230000008961 swelling Effects 0.000 abstract description 10
- 239000004698 Polyethylene Substances 0.000 description 11
- 229920000573 polyethylene Polymers 0.000 description 11
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 10
- 239000000654 additive Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000006258 conductive agent Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 2
- 239000012965 benzophenone Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- YKYONYBAUNKHLG-UHFFFAOYSA-N propyl acetate Chemical compound CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 2
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 2
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- CJVROGOPKLYNSX-UHFFFAOYSA-N (4-tert-butylcyclohexyl) carboxyoxy carbonate Chemical compound CC(C)(C)C1CCC(OC(=O)OOC(O)=O)CC1 CJVROGOPKLYNSX-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- CRMJLJFDPNJIQA-UHFFFAOYSA-N 2,4-difluoro-1-methoxybenzene Chemical compound COC1=CC=C(F)C=C1F CRMJLJFDPNJIQA-UHFFFAOYSA-N 0.000 description 1
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 1
- NLJMDXRARKRVIB-UHFFFAOYSA-N 2-diaminophosphanyloxypropane Chemical compound CC(C)OP(N)N NLJMDXRARKRVIB-UHFFFAOYSA-N 0.000 description 1
- IFXDUNDBQDXPQZ-UHFFFAOYSA-N 2-methylbutan-2-yl 2-ethylhexaneperoxoate Chemical compound CCCCC(CC)C(=O)OOC(C)(C)CC IFXDUNDBQDXPQZ-UHFFFAOYSA-N 0.000 description 1
- QUBJDMPBDURTJT-UHFFFAOYSA-N 3-chlorothiophene Chemical compound ClC=1C=CSC=1 QUBJDMPBDURTJT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 1
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- 229910010586 LiFeO 2 Inorganic materials 0.000 description 1
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000000304 alkynyl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 239000011357 graphitized carbon fiber Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N methyl acetate Chemical compound COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 150000008116 organic polysulfides Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—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
- 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
- H01M10/05—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
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0567—Liquid materials characterised by the additives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
- H01M6/16—Cells with non-aqueous electrolyte with organic electrolyte
- H01M6/162—Cells with non-aqueous electrolyte with organic electrolyte characterised by the electrolyte
- H01M6/168—Cells with non-aqueous electrolyte with organic electrolyte characterised by the electrolyte by additives
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- H—ELECTRICITY
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- 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
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0569—Liquid materials characterised by the solvents
-
- 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
- H01M2300/0025—Organic electrolyte
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- 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
- H01M2300/0082—Organic polymers
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- 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
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
【解決手段】a)正極活物質としてリチウムイオンの可逆的な脱−挿入が可能な化合物からなる正極;b)負極活物質としてリチウムイオンの可逆的な脱−挿入が可能な物質からなる負極;c)前記正極と負極の間に存在するセパレータ;及びd)非水性有機溶媒、リチウム塩及びP=O結合を有する線状高分子を含む電解質;を含むリチウム二次電池及びその製造方法。
【選択図】図1
Description
エチレンカーボネート(EC):エチルメチルカーボネート(EMC):プロピレンカーボネート(PC):フルオロベンゼン(FB)を30:55:5:10の体積比で混合した有機溶媒に1.3MのLiPF6を添加した後、ジエチルビニルホスホナート0.5重量%と、ジエチルビニルホスホナート100重量部に対してアゾビスイソブチロニトリル1重量部とを添加して電解質組成物を製造した。
エチレンカーボネート(EC):エチルメチルカーボネート(EMC):プロピレンカーボネート(PC):フルオロベンゼン(FB)を30:55:5:10の体積比で混合した有機溶媒に1.3MのLiPF6を添加した後、ジエチルビニルホスホナート0.5重量%と、ジエチルビニルホスホナート100重量部に対してアゾビスイソブチロニトリル2.7重量部とを添加して電解質組成物を製造した。
エチレンカーボネート(EC):エチルメチルカーボネート(EMC):プロピレンカーボネート(PC):フルオロベンゼン(FB)を30:55:5:10の体積比で混合した有機溶媒に1.3MのLiPF6を添加した後、エチレングリコールメタクリレートホスフェート0.5重量%と、エチレングリコールメタクリレートホスフェート100重量部に対してアゾビスイソブチロニトリル2.7重量部とを添加して電解質組成物を製造した。
エチレンカーボネート(EC):エチルメチルカーボネート(EMC):プロピレンカーボネート(PC):フルオロベンゼン(FB)を30:55:5:10の体積比で混合した有機溶媒に、1.3MのLiPF6を添加した溶液を電解質組成物として用いたことを除いては、前記実施例1と同様な方法で角形のリチウムイオン二次電池を得た。
2 正極
4 負極
6 セパレータ
8 電極組立体
10 ケース
12 キャッププレート
14 ガスケット
16 安全バルブ
18 正極タップ
20 負極タップ
22、24 絶縁体
26 電解質
Claims (15)
- a)正極活物質としてリチウムイオンの可逆的な脱−挿入が可能な化合物からなる正極;
b)負極活物質としてリチウムイオンの可逆的な脱−挿入が可能な物質からなる負極;
c)前記正極と負極の間に存在するセパレータ;及び
d)非水性有機溶媒、リチウム塩及びP=O結合を有する線状高分子を含む電解質;を含むリチウム二次電池。 - 前記非水性有機溶媒は、カーボネート、エステル、エーテル及びケトンからなる群より選択される少なくとも一つの溶媒である、請求項1に記載のリチウム二次電池。
- 前記カーボネートは、ジメチルカーボネート(DMC)、ジエチルカーボネート(DEC)、ジプロピルカーボネート(DPC)、メチルプロピルカーボネート(MPC)、エチルプロピルカーボネート(EPC)、メチルエチルカーボネート(MEC)、エチレンカーボネート(EC)、プロピレンカーボネート(PC)及びブチレンカーボネート(BC)からなる群より選択される少なくとも一つの溶媒である、請求項2に記載のリチウム二次電池。
- 前記カーボネートは、環状(cyclic)カーボネートと鎖状(chain)カーボネートとの混合溶媒である、請求項2に記載のリチウム二次電池。
- 前記非水性有機溶媒は、カーボネート系溶媒と芳香族炭化水素系有機溶媒との混合溶媒である、請求項1に記載のリチウム二次電池。
- 前記芳香族炭化水素系有機溶媒は、ベンゼン、フルオロベンゼン、トルエン、フルオロトルエン、トリフルオロトルエン、キシレン及びこれらの混合物からなる群より選択される少なくとも一つの溶媒である、請求項6に記載のリチウム二次電池。
- 前記カーボネート系溶媒と芳香族炭化水素系有機溶媒は、1:1乃至30:1の体積比で混合される、請求項5に記載のリチウム二次電池。
- 前記リチウム塩は、LiPF6、LiBF4、LiSbF6、LiAsF6、LiClO4、LiCF3SO3、Li(CF3SO2)2N、LiC4F9SO3、LiAlO4、LiAlCl4、LiGaCl4、LiN(CxF2x+1SO2)(CyF2y+1SO2)(ここで、x及びyは自然数である)、LiNO3、LiCl及びLilからなる群より選択される1種または2種以上である、請求項1に記載のリチウム二次電池。
- 前記リチウム塩は0.6乃至2.0Mの濃度で用いられる、請求項9に記載のリチウム二次電池。
- 前記P=O結合を有する線状高分子は、不飽和炭化水素基を含むホスホナート化合物を重合して形成される、請求項1に記載のリチウム二次電池。
- 前記不飽和炭化水素基を含むホスホナート化合物は、ジエチルビニルホスホナート、ジメチルビニルホスホナート、ジプロピルビニルホスホナート、エチレングリコールメタクリレートホスフェート(CH2=C(CH3)CO2CH2CH2OP(O)(OH)2)、アリルジエチルホスホノアセテート((C2H5O)2P(O)CH2CO2CH2CH=CH2)、トリエチル3−メチル−4−ホスホノクロトネート((C2H5O)2P(O)CH2C(CH3)=CHCO2C2H5)、及びアリルテトライソプロピルホスホロジアミダイト((((CH3)2CH)2N)2POCH2CH=CH2)からなる群より選択される少なくとも一つである、請求項11に記載のリチウム二次電池。
- 前記P=O結合を有する線状高分子の含量は、電解質総量に対して0.005乃至5重量%である、請求項1に記載のリチウム二次電池。
- リチウム塩、非水性有機溶媒、不飽和炭化水素基を含むホスホナート化合物及び重合開始剤を含む非水性電解質を、正極と負極の間に注入して電池を製造する段階;及び
前記不飽和炭化水素基を含むホスホナート化合物を反応させ、P=O結合を有する線状高分子を形成する段階;
を含むリチウム二次電池の製造方法。 - 電池を製造した後に熱処理する段階をさらに含む、請求項14に記載のリチウム二次電池の製造方法。
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JP4202854B2 (ja) | 2008-12-24 |
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US7678504B2 (en) | 2010-03-16 |
US20040013944A1 (en) | 2004-01-22 |
CN1501542A (zh) | 2004-06-02 |
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