JP7483885B2 - リチウム‐硫黄電池用電解質及びこれを含むリチウム‐硫黄電池 - Google Patents
リチウム‐硫黄電池用電解質及びこれを含むリチウム‐硫黄電池 Download PDFInfo
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- JP7483885B2 JP7483885B2 JP2022530788A JP2022530788A JP7483885B2 JP 7483885 B2 JP7483885 B2 JP 7483885B2 JP 2022530788 A JP2022530788 A JP 2022530788A JP 2022530788 A JP2022530788 A JP 2022530788A JP 7483885 B2 JP7483885 B2 JP 7483885B2
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- Prior art keywords
- lithium
- ether
- sulfur
- electrolyte
- sulfur battery
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- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 title claims description 83
- 239000003792 electrolyte Substances 0.000 title claims description 74
- 229910052744 lithium Inorganic materials 0.000 claims description 84
- -1 alkyl vinyl ether compound Chemical class 0.000 claims description 61
- 239000007774 positive electrode material Substances 0.000 claims description 48
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 41
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 39
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 32
- 229910052717 sulfur Inorganic materials 0.000 claims description 31
- 239000011593 sulfur Substances 0.000 claims description 30
- 239000000654 additive Substances 0.000 claims description 23
- 150000002391 heterocyclic compounds Chemical class 0.000 claims description 22
- VQKFNUFAXTZWDK-UHFFFAOYSA-N 2-Methylfuran Chemical compound CC1=CC=CO1 VQKFNUFAXTZWDK-UHFFFAOYSA-N 0.000 claims description 20
- 230000000996 additive effect Effects 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 18
- 229910003002 lithium salt Inorganic materials 0.000 claims description 15
- 159000000002 lithium salts Chemical class 0.000 claims description 15
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 claims description 14
- 239000007773 negative electrode material Substances 0.000 claims description 14
- 239000011356 non-aqueous organic solvent Substances 0.000 claims description 14
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims description 12
- 125000004432 carbon atom Chemical group C* 0.000 claims description 11
- OVGRCEFMXPHEBL-UHFFFAOYSA-N 1-ethenoxypropane Chemical compound CCCOC=C OVGRCEFMXPHEBL-UHFFFAOYSA-N 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- GSNUFIFRDBKVIE-UHFFFAOYSA-N DMF Natural products CC1=CC=C(C)O1 GSNUFIFRDBKVIE-UHFFFAOYSA-N 0.000 claims description 8
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- KJRRQXYWFQKJIP-UHFFFAOYSA-N 3-methylfuran Chemical compound CC=1C=COC=1 KJRRQXYWFQKJIP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 claims description 6
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 6
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- 229910000733 Li alloy Inorganic materials 0.000 claims description 5
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 5
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 4
- IOSXLUZXMXORMX-UHFFFAOYSA-N 1-ethenoxypentane Chemical compound CCCCCOC=C IOSXLUZXMXORMX-UHFFFAOYSA-N 0.000 claims description 4
- CPULIKNSOUFMPL-UHFFFAOYSA-N 2,4-dimethylthiophene Chemical compound CC1=CSC(C)=C1 CPULIKNSOUFMPL-UHFFFAOYSA-N 0.000 claims description 4
- GWQOOADXMVQEFT-UHFFFAOYSA-N 2,5-Dimethylthiophene Chemical compound CC1=CC=C(C)S1 GWQOOADXMVQEFT-UHFFFAOYSA-N 0.000 claims description 4
- CPLJMYOQYRCCBY-UHFFFAOYSA-N 2-Propylfuran Chemical compound CCCC1=CC=CO1 CPLJMYOQYRCCBY-UHFFFAOYSA-N 0.000 claims description 4
- NWZIYQNUCXUJJJ-UHFFFAOYSA-N 2-butylfuran Chemical compound CCCCC1=CC=CO1 NWZIYQNUCXUJJJ-UHFFFAOYSA-N 0.000 claims description 4
- HLPIHRDZBHXTFJ-UHFFFAOYSA-N 2-ethylfuran Chemical compound CCC1=CC=CO1 HLPIHRDZBHXTFJ-UHFFFAOYSA-N 0.000 claims description 4
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 4
- XOBKSJJDNFUZPF-UHFFFAOYSA-N Methoxyethane Chemical compound CCOC XOBKSJJDNFUZPF-UHFFFAOYSA-N 0.000 claims description 4
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000001989 lithium alloy Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 125000004434 sulfur atom Chemical group 0.000 claims description 4
- 150000003464 sulfur compounds Chemical class 0.000 claims description 4
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 claims description 4
- OZCMOJQQLBXBKI-UHFFFAOYSA-N 1-ethenoxy-2-methylpropane Chemical compound CC(C)COC=C OZCMOJQQLBXBKI-UHFFFAOYSA-N 0.000 claims description 3
- YAOJJEJGPZRYJF-UHFFFAOYSA-N 1-ethenoxyhexane Chemical compound CCCCCCOC=C YAOJJEJGPZRYJF-UHFFFAOYSA-N 0.000 claims description 3
- CAQYAZNFWDDMIT-UHFFFAOYSA-N 1-ethoxy-2-methoxyethane Chemical compound CCOCCOC CAQYAZNFWDDMIT-UHFFFAOYSA-N 0.000 claims description 3
- 229910003253 LiB10Cl10 Inorganic materials 0.000 claims description 3
- 229910000552 LiCF3SO3 Inorganic materials 0.000 claims description 3
- 229910001290 LiPF6 Inorganic materials 0.000 claims description 3
- 229910006095 SO2F Inorganic materials 0.000 claims description 3
- BEKPOUATRPPTLV-UHFFFAOYSA-N [Li].BCl Chemical compound [Li].BCl BEKPOUATRPPTLV-UHFFFAOYSA-N 0.000 claims description 3
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 claims description 3
- 125000005842 heteroatom Chemical group 0.000 claims description 3
- 229910001547 lithium hexafluoroantimonate(V) Inorganic materials 0.000 claims description 3
- 229910001540 lithium hexafluoroarsenate(V) Inorganic materials 0.000 claims description 3
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Inorganic materials [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 claims description 3
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 claims description 3
- 229910001486 lithium perchlorate Inorganic materials 0.000 claims description 3
- 229910001537 lithium tetrachloroaluminate Inorganic materials 0.000 claims description 3
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 claims description 3
- HSFDLPWPRRSVSM-UHFFFAOYSA-M lithium;2,2,2-trifluoroacetate Chemical compound [Li+].[O-]C(=O)C(F)(F)F HSFDLPWPRRSVSM-UHFFFAOYSA-M 0.000 claims description 3
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 claims description 3
- JRRDISHSXWGFRF-UHFFFAOYSA-N 1-[2-(2-ethoxyethoxy)ethoxy]-2-methoxyethane Chemical compound CCOCCOCCOCCOC JRRDISHSXWGFRF-UHFFFAOYSA-N 0.000 claims description 2
- YZWVMKLQNYGKLJ-UHFFFAOYSA-N 1-[2-[2-(2-ethoxyethoxy)ethoxy]ethoxy]-2-methoxyethane Chemical compound CCOCCOCCOCCOCCOC YZWVMKLQNYGKLJ-UHFFFAOYSA-N 0.000 claims description 2
- RRQYJINTUHWNHW-UHFFFAOYSA-N 1-ethoxy-2-(2-ethoxyethoxy)ethane Chemical compound CCOCCOCCOCC RRQYJINTUHWNHW-UHFFFAOYSA-N 0.000 claims description 2
- CNJRPYFBORAQAU-UHFFFAOYSA-N 1-ethoxy-2-(2-methoxyethoxy)ethane Chemical compound CCOCCOCCOC CNJRPYFBORAQAU-UHFFFAOYSA-N 0.000 claims description 2
- KIAMPLQEZAMORJ-UHFFFAOYSA-N 1-ethoxy-2-[2-(2-ethoxyethoxy)ethoxy]ethane Chemical compound CCOCCOCCOCCOCC KIAMPLQEZAMORJ-UHFFFAOYSA-N 0.000 claims description 2
- NVJUHMXYKCUMQA-UHFFFAOYSA-N 1-ethoxypropane Chemical compound CCCOCC NVJUHMXYKCUMQA-UHFFFAOYSA-N 0.000 claims description 2
- FJSKXQVRKZTKSI-UHFFFAOYSA-N 2,3-dimethylfuran Chemical compound CC=1C=COC=1C FJSKXQVRKZTKSI-UHFFFAOYSA-N 0.000 claims description 2
- BZYUMXXOAYSFOW-UHFFFAOYSA-N 2,3-dimethylthiophene Chemical compound CC=1C=CSC=1C BZYUMXXOAYSFOW-UHFFFAOYSA-N 0.000 claims description 2
- AABTWRKUKUPMJG-UHFFFAOYSA-N 2,4-dimethylfuran Chemical compound CC1=COC(C)=C1 AABTWRKUKUPMJG-UHFFFAOYSA-N 0.000 claims description 2
- YVBAUDVGOFCUSG-UHFFFAOYSA-N 2-Pentylfuran Natural products CCCCCC1=CC=CO1 YVBAUDVGOFCUSG-UHFFFAOYSA-N 0.000 claims description 2
- WVUICGOYGDHVBH-ONEGZZNKSA-N 2-[(e)-2-nitroethenyl]furan Chemical compound [O-][N+](=O)\C=C\C1=CC=CO1 WVUICGOYGDHVBH-ONEGZZNKSA-N 0.000 claims description 2
- MNDZHERKKXUTOE-UHFFFAOYSA-N 2-butylthiophene Chemical compound CCCCC1=CC=CS1 MNDZHERKKXUTOE-UHFFFAOYSA-N 0.000 claims description 2
- JCCCMAAJYSNBPR-UHFFFAOYSA-N 2-ethylthiophene Chemical compound CCC1=CC=CS1 JCCCMAAJYSNBPR-UHFFFAOYSA-N 0.000 claims description 2
- XWNTYHBAQIEAGN-UHFFFAOYSA-N 2-methyl-2h-pyran Chemical compound CC1OC=CC=C1 XWNTYHBAQIEAGN-UHFFFAOYSA-N 0.000 claims description 2
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- BTXIJTYYMLCUHI-UHFFFAOYSA-N 2-propylthiophene Chemical compound CCCC1=CC=CS1 BTXIJTYYMLCUHI-UHFFFAOYSA-N 0.000 claims description 2
- MGADZUXDNSDTHW-UHFFFAOYSA-N 2H-pyran Chemical compound C1OC=CC=C1 MGADZUXDNSDTHW-UHFFFAOYSA-N 0.000 claims description 2
- HYDWALOBQJFOMS-UHFFFAOYSA-N 3,6,9,12,15-pentaoxaheptadecane Chemical compound CCOCCOCCOCCOCCOCC HYDWALOBQJFOMS-UHFFFAOYSA-N 0.000 claims description 2
- SCRLLDUEKYMHDB-UHFFFAOYSA-N 3-methylpyran Chemical compound CC1=CO[CH][CH][CH]1 SCRLLDUEKYMHDB-UHFFFAOYSA-N 0.000 claims description 2
- OOARNVHTYGBULA-UHFFFAOYSA-N 4-methyl-2h-pyran Chemical compound CC1=CCOC=C1 OOARNVHTYGBULA-UHFFFAOYSA-N 0.000 claims description 2
- 229910007552 Li2Sn Inorganic materials 0.000 claims description 2
- QENGPZGAWFQWCZ-UHFFFAOYSA-N Methylthiophene Natural products CC=1C=CSC=1 QENGPZGAWFQWCZ-UHFFFAOYSA-N 0.000 claims description 2
- RFRXIWQYSOIBDI-UHFFFAOYSA-N benzarone Chemical compound CCC=1OC2=CC=CC=C2C=1C(=O)C1=CC=C(O)C=C1 RFRXIWQYSOIBDI-UHFFFAOYSA-N 0.000 claims description 2
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 claims description 2
- POLCUAVZOMRGSN-UHFFFAOYSA-N dipropyl ether Chemical compound CCCOCCC POLCUAVZOMRGSN-UHFFFAOYSA-N 0.000 claims description 2
- 150000002019 disulfides Chemical class 0.000 claims description 2
- YQCIWBXEVYWRCW-UHFFFAOYSA-N methane;sulfane Chemical compound C.S YQCIWBXEVYWRCW-UHFFFAOYSA-N 0.000 claims description 2
- VNKYTQGIUYNRMY-UHFFFAOYSA-N methoxypropane Chemical compound CCCOC VNKYTQGIUYNRMY-UHFFFAOYSA-N 0.000 claims description 2
- 150000002898 organic sulfur compounds Chemical class 0.000 claims description 2
- 229930192474 thiophene Natural products 0.000 claims description 2
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 29
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 10
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- 150000005846 sugar alcohols Polymers 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 229910052713 technetium Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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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
- H01M10/056—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01M10/00—Secondary cells; Manufacture thereof
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- H01M10/052—Li-accumulators
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
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- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
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- 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
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
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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
- H01M10/056—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
- H01M10/0568—Liquid materials characterised by the solutes
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
-
- 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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- 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
- H01M2300/0028—Organic electrolyte characterised by the solvent
- H01M2300/0037—Mixture of solvents
-
- 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
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
- H01M4/382—Lithium
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/40—Alloys based on alkali metals
- H01M4/405—Alloys based on lithium
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/581—Chalcogenides or intercalation compounds thereof
- H01M4/5815—Sulfides
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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
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- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
[化1]
[化1]
[実施例1]
正極活物質で硫黄‐炭素複合体(S:C=75:25(重量比))87.5質量%、導電材でデンカブラック5.0質量%、バインダーでスチレンブタジエンゴム/カルボキシメチルセルロース(SBR:CMC=70:30(重量比))7.5質量%を混合して正極スラリー組成物を製造した。
プロピルビニルエーテルの代わりにブチルビニルエーテルを同一含量で使ったことを除いては、上記実施例1と同様の方法でリチウム‐硫黄電池を製造した。
電解質製造の際にプロピルビニルエーテルの含量を5.0質量%に変更したことを除いては、上記実施例1と同様の方法でリチウム‐硫黄電池を製造した。
電解質製造の際にプロピルビニルエーテル1.0質量%をブチルビニルエーテル5.0質量%に変更したことを除いては、上記実施例1と同様の方法でリチウム‐硫黄電池を製造した。
電解質製造の際に2‐メチルフランとジメトキシエタン(2‐methylfuran:DME=1:1(体積比))からなる有機溶媒を使ったことを除いては、上記実施例1と同様の方法でリチウム‐硫黄電池を製造した。
電解質製造の際にプロピルビニルエーテルを使わないことを除いては、上記実施例1と同様の方法でリチウム‐硫黄電池を製造した。
電解質製造の際に2‐メチルフランとジメトキシエタン(2‐methylfuran:DME=1:1(体積比))からなる有機溶媒を使って、プロピルビニルエーテルを使わないことを除いては、上記実施例1と同様の方法でリチウム‐硫黄電池を製造した。
実施例及び比較例で製造した電池に対して、充・放電測定装置(LAND CT‐2001A、武漢(Wuhan)社製品)を使って性能を評価した。
Claims (15)
- リチウム塩、非水系有機溶媒及び添加剤を含み、
上記添加剤はアルキルビニルエーテル化合物を含み、
上記アルキルビニルエーテル化合物は、リチウム‐硫黄電池用電解質全体100質量%を基準にして1ないし5質量%で含まれる、リチウム‐硫黄電池用電解質。 - 上記アルキルビニルエーテル化合物は下記化学式1で表される、請求項1に記載のリチウム‐硫黄電池用電解質:
[化1]
- 上記アルキルビニルエーテル化合物は、メチルビニルエーテル、エチルビニルエーテル、プロピルビニルエーテル、ブチルビニルエーテル、イソブチルビニルエーテル、ペンチルビニルエーテル及びヘキシルビニルエーテルからなる群から選択される1種以上を含む、請求項1又は2に記載のリチウム‐硫黄電池用電解質。
- 上記非水系有機溶媒は、エーテル系化合物及び一つ以上の二重結合を含むヘテロ環化合物を含む、請求項1~3のいずれか一項に記載のリチウム‐硫黄電池用電解質。
- 上記エーテル系化合物は線形エーテル化合物を含む、請求項4に記載のリチウム‐硫黄電池用電解質。
- 上記線形エーテル化合物は、ジメチルエーテル、ジエチルエーテル、ジプロピルエーテル、メチルエチルエーテル、メチルプロピルエーテル、エチルプロピルエーテル、ジメトキシエタン、ジエトキシエタン、エチレングリコールエチルメチルエーテル、ジエチレングリコールジメチルエーテル、ジエチレングリコールジエチルエーテル、ジエチレングリコールメチルエチルエーテル、トリエチレングリコールジメチルエーテル、トリエチレングリコールジエチルエーテル、トリエチレングリコールメチルエチルエーテル、テトラエチレングリコールジメチルエーテル、テトラエチレングリコールジエチルエーテル、テトラエチレングリコールメチルエチルエーテル、ポリエチレングリコールジメチルエーテル、ポリエチレングリコールジエチルエーテル及びポリエチレングリコールメチルエチルエーテルからなる群から選択される1種以上を含む、請求項5に記載のリチウム‐硫黄電池用電解質。
- 上記ヘテロ環化合物は、酸素原子及び硫黄原子からなる群から選択される1種以上のヘテロ原子を含む、請求項4~6のいずれか一項に記載のリチウム‐硫黄電池用電解質。
- 上記ヘテロ環化合物は、フラン、2‐メチルフラン、3‐メチルフラン、2‐エチルフラン、2‐プロピルフラン、2‐ブチルフラン、2,3‐ジメチルフラン、2,4‐ジメチルフラン、2,5‐ジメチルフラン、ピラン、2‐メチルピラン、3‐メチルピラン、4‐メチルピラン、ベンゾフラン、2‐(2‐ニトロビニル)フラン、チオフェン、2‐メチルチオフェン、2‐エチルチオフェン、2‐プロピルチオフェン、2‐ブチルチオフェン、2,3‐ジメチルチオフェン、2,4‐ジメチルチオフェン及び2,5‐ジメチルチオフェンからなる群から選択される1種以上を含む、請求項4~7のいずれか一項に記載のリチウム‐硫黄電池用電解質。
- 上記非水系有機溶媒は、エーテル系化合物とヘテロ環化合物を95:5ないし5:95の体積比で含む、請求項4~8のいずれか一項に記載のリチウム‐硫黄電池用電解質。
- 上記リチウム塩は、LiCl、LiBr、LiI、LiClO4、LiBF4、LiB10Cl10、LiPF6、LiCF3SO3、LiCF3CO2、LiC4BO8、LiAsF6、LiSbF6、LiAlCl4、CH3SO3Li、(CF3SO2)2NLi、(C2F5SO2)2NLi、(SO2F)2NLi、(CF3SO2)3CLi、クロロボランリチウム、炭素数4以下の低級脂肪族カルボン酸リチウム、4‐フェニルホウ酸リチウム及びリチウムイミドからなる群から選択される1種以上を含む、請求項1~9のいずれか一項に記載のリチウム‐硫黄電池用電解質。
- 上記アルキルビニルエーテル化合物は、リチウム‐硫黄電池用電解質全体100質量%を基準にして1ないし2質量%で含まれる、請求項1~10のいずれか一項に記載のリチウム‐硫黄電池用電解質。
- 正極活物質を含む正極;
負極活物質を含む負極;及び
請求項1~11のいずれか一項に記載の電解質を含むリチウム‐硫黄電池。 - 上記正極活物質は硫黄元素及び硫黄化合物からなる群で選択される1種以上を含む、請求項12に記載のリチウム‐硫黄電池。
- 上記正極活物質は、無機硫黄、Li2Sn(n≧1)、ジスルフィド化合物、有機硫黄化合物及び炭素‐硫黄ポリマー((C2Sx)n、x=2.5ないし50、n≧2)からなる群から選択される1種以上を含む、請求項12又は13に記載のリチウム‐硫黄電池。
- 上記負極活物質はリチウム金属及びリチウム合金からなる群から選択される1種以上を含む、請求項12~14のいずれか一項に記載のリチウム‐硫黄電池。
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KR1020210036050A KR20210120858A (ko) | 2020-03-27 | 2021-03-19 | 리튬-황 전지용 전해질 및 이를 포함하는 리튬-황 전지 |
KR10-2021-0036050 | 2021-03-19 | ||
PCT/KR2021/003594 WO2021194231A1 (ko) | 2020-03-27 | 2021-03-23 | 리튬-황 전지용 전해질 및 이를 포함하는 리튬-황 전지 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4053003B2 (ja) | 2001-12-21 | 2008-02-27 | 三洋電機株式会社 | 非水電解質二次電池 |
JP2005251677A (ja) | 2004-03-08 | 2005-09-15 | Nec Corp | 非水電解液二次電池 |
JP2006269234A (ja) | 2005-03-24 | 2006-10-05 | Sanyo Electric Co Ltd | 非水電解質二次電池 |
JP2019505947A (ja) | 2015-12-14 | 2019-02-28 | ノームズ テクノロジーズ,インク. | シラン官能化イオン液体 |
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CN114503333A (zh) | 2022-05-13 |
US20220384849A1 (en) | 2022-12-01 |
WO2021194231A1 (ko) | 2021-09-30 |
EP4044314A4 (en) | 2023-05-31 |
EP4044314A1 (en) | 2022-08-17 |
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