KR100303543B1 - 난연성 전해액 및 이를 포함하는 리튬 이차 전지 - Google Patents
난연성 전해액 및 이를 포함하는 리튬 이차 전지 Download PDFInfo
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- KR100303543B1 KR100303543B1 KR1019990015927A KR19990015927A KR100303543B1 KR 100303543 B1 KR100303543 B1 KR 100303543B1 KR 1019990015927 A KR1019990015927 A KR 1019990015927A KR 19990015927 A KR19990015927 A KR 19990015927A KR 100303543 B1 KR100303543 B1 KR 100303543B1
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- Prior art keywords
- solvent
- secondary battery
- lithium secondary
- carbonate
- lithium
- Prior art date
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 34
- 239000003792 electrolyte Substances 0.000 title claims description 25
- 239000002904 solvent Substances 0.000 claims abstract description 50
- 239000000654 additive Substances 0.000 claims abstract description 20
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 17
- 230000000996 additive effect Effects 0.000 claims abstract description 17
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 11
- -1 metal halide compounds Chemical class 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 6
- GZDFHIJNHHMENY-UHFFFAOYSA-N Dimethyl dicarbonate Chemical compound COC(=O)OC(=O)OC GZDFHIJNHHMENY-UHFFFAOYSA-N 0.000 claims abstract description 5
- BRCWHGIUHLWZBK-UHFFFAOYSA-K bismuth;trifluoride Chemical compound F[Bi](F)F BRCWHGIUHLWZBK-UHFFFAOYSA-K 0.000 claims abstract description 5
- FFYPMLJYZAEMQB-UHFFFAOYSA-N diethyl pyrocarbonate Chemical compound CCOC(=O)OC(=O)OCC FFYPMLJYZAEMQB-UHFFFAOYSA-N 0.000 claims abstract description 5
- 235000010300 dimethyl dicarbonate Nutrition 0.000 claims abstract description 5
- BSVXBXNZZNYAIK-UHFFFAOYSA-L 2,2,2-triphenyl-1,3,2$l^{5}-dioxabismetan-4-one Chemical compound O1C(=O)O[Bi]1(C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 BSVXBXNZZNYAIK-UHFFFAOYSA-L 0.000 claims abstract description 4
- 229910001507 metal halide Inorganic materials 0.000 claims abstract description 4
- 229910000014 Bismuth subcarbonate Inorganic materials 0.000 claims abstract description 3
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 3
- MGLUJXPJRXTKJM-UHFFFAOYSA-L bismuth subcarbonate Chemical compound O=[Bi]OC(=O)O[Bi]=O MGLUJXPJRXTKJM-UHFFFAOYSA-L 0.000 claims abstract description 3
- 229940036358 bismuth subcarbonate Drugs 0.000 claims abstract description 3
- ZHXAZZQXWJJBHA-UHFFFAOYSA-N triphenylbismuthane Chemical compound C1=CC=CC=C1[Bi](C=1C=CC=CC=1)C1=CC=CC=C1 ZHXAZZQXWJJBHA-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000007773 negative electrode material Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000003575 carbonaceous material Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 5
- 229910001416 lithium ion Inorganic materials 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 239000011302 mesophase pitch Substances 0.000 claims description 3
- 150000002736 metal compounds Chemical class 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000002441 X-ray diffraction Methods 0.000 claims description 2
- 239000006183 anode active material Substances 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 238000003763 carbonization Methods 0.000 claims description 2
- 238000010000 carbonizing Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 238000005087 graphitization Methods 0.000 claims description 2
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 claims description 2
- 229910001486 lithium perchlorate Inorganic materials 0.000 claims description 2
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 claims description 2
- MCVFFRWZNYZUIJ-UHFFFAOYSA-M lithium;trifluoromethanesulfonate Chemical compound [Li+].[O-]S(=O)(=O)C(F)(F)F MCVFFRWZNYZUIJ-UHFFFAOYSA-M 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000012798 spherical particle Substances 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 abstract description 20
- 239000010452 phosphate Substances 0.000 abstract description 20
- 238000000354 decomposition reaction Methods 0.000 abstract description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract description 15
- 230000006866 deterioration Effects 0.000 abstract description 8
- 230000002427 irreversible effect Effects 0.000 abstract description 8
- 238000002161 passivation Methods 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 5
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- 150000005678 chain carbonates Chemical class 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 150000005676 cyclic carbonates Chemical class 0.000 abstract description 2
- ARWJSDBKJGYWET-UHFFFAOYSA-N phenylbismuth Chemical class [Bi]C1=CC=CC=C1 ARWJSDBKJGYWET-UHFFFAOYSA-N 0.000 abstract description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 14
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 14
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 5
- 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 4
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 4
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 4
- BJIKOZOULYUROB-UHFFFAOYSA-N dimethoxymethanethione Chemical compound COC(=S)OC BJIKOZOULYUROB-UHFFFAOYSA-N 0.000 description 4
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 229910014689 LiMnO Inorganic materials 0.000 description 3
- 229910013716 LiNi Inorganic materials 0.000 description 3
- 239000003660 carbonate based solvent Substances 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000003115 supporting electrolyte Substances 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
- 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
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
- H01M10/056—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
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—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
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
- H01M4/58—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
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
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- 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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- 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
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- Battery Electrode And Active Subsutance (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
용매 | 첨가제 | 수명, 1C(100회) | 용량 | 안전성 평가 | ||||
초기방전용량(mAh) | 비가역 용량() | 과충전, 1C | 관통 | |||||
실시예 | 1 | EC/DMTC/DEC/TMP | 트리페닐비스무트 카보네이트(TBBC) | 87 | 2060 | 91 | L0 | L1 |
2 | EC/DMTC/DEC/TMP | 디메틸 피로카보네이트(DMPC) | 86 | 2011 | 89 | L0 | L1 | |
3 | EC/DMTC/DEC/TMP | 디에틸 피로카보네이트(DEPC) | 85 | 1966 | 87 | L0 | L1 | |
4 | EC/DMTC/DEC/TMP | 비스무트 플루오라이드(BF) | 85 | 1920 | 85 | L0 | L1 | |
비교예 | 1 | EC/DMC/DEC | - | 90 | 2100 | 93 | L1 | L5 |
2 | EC/DMTC/DEC/TMP | - | 33 | 1695 | 75 | L0 | L1 |
시험항목 | 시험전OCV(V)* | 누액(L1) | 섬광(L2) | 불꽃(L2) | 연기(L3) | 발화(L4) | 피열(L5) | 최고온도(℃) | 평가수준** |
과충전1C | 4.157 | × | × | × | × | × | × | 107 | L0 |
4.157 | × | × | × | × | × | × | 104 | L0 | |
4.156 | × | × | × | × | × | × | 106 | L0 | |
4.157 | × | × | × | × | × | × | 98 | L0 | |
4.156 | × | × | × | × | × | × | 109 | L0 | |
과충전3C | 4.157 | × | × | × | × | × | × | 158 | L0 |
4.157 | × | × | × | × | × | × | 134 | L0 | |
4.157 | ○ | × | × | × | × | × | 158 | L1 | |
4.157 | ○ | × | × | × | × | × | 148 | L1 | |
4.157 | × | × | × | × | × | × | 150 | L0 | |
관통 | 4.158 | ○ | × | × | × | × | × | 85 | L1 |
4.149 | ○ | × | × | × | × | × | 106 | L1 | |
4.152 | ○ | × | × | × | × | × | 92 | L1 | |
4.159 | ○ | × | × | × | × | × | 104 | L1 | |
4.156 | ○ | × | × | × | × | × | 97 | L1 | |
과충전관통 | 4.211 | ○ | × | × | × | × | × | 96 | L1 |
4.210 | ○ | × | × | × | × | × | 91 | L1 | |
4.212 | ○ | × | × | × | × | × | 84 | L1 | |
4.198 | ○ | × | × | × | × | × | 88 | L1 | |
4.193 | ○ | × | × | × | × | × | 105 | L1 | |
압축종(從) | 4.154 | ○ | × | × | × | × | × | 24 | L1 |
4.154 | ○ | × | × | × | × | × | 24 | L1 | |
4.154 | ○ | × | × | × | × | × | 26 | L1 | |
4.156 | ○ | × | × | × | × | × | 26 | L1 | |
4.154 | ○ | × | × | × | × | × | 31 | L1 | |
압축횡(橫) | 4.156 | ○ | × | × | × | × | × | 27 | L1 |
4.154 | ○ | × | × | × | × | × | 27 | L1 | |
4.153 | ○ | × | × | × | × | × | 28 | L1 | |
1.153 | ○ | × | × | × | × | × | 29 | L1 | |
1.154 | ○ | × | × | × | × | × | 28 | L1 |
시험항목 | 시험전OCV(V)* | 누액(L1) | 섬광(L2) | 불꽃(L2) | 연기(L3) | 발화(L4) | 파열(L5) | 최고온도(℃) | 평가수준 |
관통 | 4.150 | ○ | ○ | ○ | ○ | ○ | ○ | 434 | L5 |
4.162 | ○ | ○ | ○ | ○ | ○ | ○ | 417 | L5 | |
4.144 | ○ | ○ | ○ | ○ | ○ | ○ | 350 | L5 | |
4.162 | ○ | ○ | ○ | ○ | ○ | ○ | 342 | L5 | |
4.162 | ○ | ○ | ○ | ○ | ○ | ○ | 487 | L5 | |
과충전관통 | 4.294 | ○ | ○ | ○ | ○ | ○ | ○ | 458 | L5 |
4.295 | ○ | ○ | ○ | ○ | ○ | ○ | 431 | L5 | |
4.297 | ○ | ○ | ○ | ○ | ○ | ○ | 154 | L5 | |
4.294 | ○ | ○ | ○ | ○ | ○ | ○ | 396 | L5 | |
4.184 | ○ | ○ | ○ | ○ | ○ | ○ | 341 | L5 | |
4.265 | ○ | ○ | ○ | ○ | ○ | ○ | 155 | L5 | |
4.240 | ○ | ○ | ○ | ○ | ○ | ○ | 163 | L5 | |
4.221 | ○ | ○ | ○ | ○ | ○ | ○ | 73 | L5 | |
4.225 | ○ | ○ | ○ | ○ | ○ | ○ | 204 | L5 |
Claims (8)
- 카보네이트계 용매, 티오카보네이트계 용매 및 인산계 용매가 20∼75:5∼30:15∼50의 부피비로 혼합된 용매에 금속화합물 또는 금속할로겐 화합물의 무기첨가제가 첨가된 것을 특징으로 하는 리튬 이차 전지용 전해액.
- 제 1항에 있어서, 상기 무기첨가제는 트리페닐비스무트 카보네이트, 트리페닐비스무트, 비스무트 서브나이트레이트(bismuth subnirate), 비스무트 서브카보네이트, 디메틸 피로카보네이트(pyrocarbonate), 디에틸 피로카보네이트 및 비스무트 플루오라이드로 이루어진 군으로부터 선택된 것을 특징으로 하는 리튬 이차 전지용 전해액.
- 제 1항에 있어서, 상기 무기첨가제의 첨가량은 0.3∼5 중량인 것을 특징으로 하는 리튬 이차 전지용 전해액.
- 제 1항에 있어서, 상기 전해액이 리튬 헥사플루오로포스페이트, 리튬 테트라플루오로보레이트, 리튬 퍼클로레이트, 리튬 트리플루오로메탄설포네이트 및 이들중 둘 이상의 혼합물로 이루어진 군으로부터 선택된 지지(supporting) 전해염을 더 포함하는 것을 특징으로 하는 리튬 이차 전지용 전해액.
- 제1항에 따른 전해액;수지 바인더(resin binder), 음극 활물질로서 리튬 이온을 흡장/방출할 수 있는 흑연 탄소 물질(graphitic carbonaceous material)로 구성된 음극 극판; 및리튬 이온을 흡장/방출할 수 있는 리튬 복합 산화물로 구성된 양극 극판으로 이루어진 것을 특징으로 하는 리튬 이차 전지.
- 제 5항에 있어서, 상기 음극 활물질은 dOO2 층간거리(interplanar distance)가 3.35∼3.38 Å이고 X-선 회절에 의한 Lc(crystallite size)가 적어도 20㎚ 이상이고 700℃ 이상에서 발열 피크를 가지는 것을 특징으로 하는 리튬 이차 전지.
- 제 5항에 있어서, 상기 음극 활물질은 메조페이스(mesophase) 구형 입자로부터 탄화단계(carbonizing step) 및 흑연화 단계(graphitizing step)를 거쳐 제조된 카본 물질인 것을 특징으로 하는 리튬 이차 전지.
- 제 4항에 있어서, 상기 음극 활물질은 섬유형 메조페이스 핏치(mesophase pitch fiber)로부터 탄화 단계 및 흑연화 단계를 거쳐 제조된 섬유형 흑연(graphite fiber)인 것을 특징으로 하는 리튬 이차 전지.
Priority Applications (3)
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KR1019990015927A KR100303543B1 (ko) | 1999-05-03 | 1999-05-03 | 난연성 전해액 및 이를 포함하는 리튬 이차 전지 |
JP2000133218A JP4129347B2 (ja) | 1999-05-03 | 2000-05-02 | リチウム二次電池用電解液及びこれを備えたリチウム二次電池 |
US09/564,729 US6232020B1 (en) | 1999-05-03 | 2000-05-03 | Non-flammable electrolyte compositions and lithium secondary batteries made thereof |
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KR1019990015927A KR100303543B1 (ko) | 1999-05-03 | 1999-05-03 | 난연성 전해액 및 이를 포함하는 리튬 이차 전지 |
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KR20000072956A KR20000072956A (ko) | 2000-12-05 |
KR100303543B1 true KR100303543B1 (ko) | 2001-09-26 |
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KR1019990015927A KR100303543B1 (ko) | 1999-05-03 | 1999-05-03 | 난연성 전해액 및 이를 포함하는 리튬 이차 전지 |
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US (1) | US6232020B1 (ko) |
JP (1) | JP4129347B2 (ko) |
KR (1) | KR100303543B1 (ko) |
Families Citing this family (11)
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KR100346541B1 (ko) * | 1999-10-12 | 2002-07-26 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 전해액 |
US6797437B2 (en) | 2001-12-28 | 2004-09-28 | Quallion Llc | Electrolyte system and energy storage device using same |
JP4952680B2 (ja) | 2008-08-05 | 2012-06-13 | ソニー株式会社 | リチウムイオン二次電池およびリチウムイオン二次電池用負極 |
JP5630189B2 (ja) * | 2010-10-05 | 2014-11-26 | 新神戸電機株式会社 | リチウムイオン電池 |
WO2012067943A1 (en) * | 2010-11-15 | 2012-05-24 | Amprius, Inc. | Electrolytes for rechargeable batteries |
CN105244550A (zh) * | 2015-10-29 | 2016-01-13 | 金龙联合汽车工业(苏州)有限公司 | 防起火型电动汽车动力电池 |
CN106410278B (zh) * | 2016-11-28 | 2018-11-02 | 贺晨旭 | 一种用于锂电池电解液的硫酰基改性无机物添加剂及改性方法 |
KR20180129492A (ko) | 2017-05-26 | 2018-12-05 | 삼성전자주식회사 | 포스파이트계 첨가제를 포함하는 리튬이차전지 |
KR102098447B1 (ko) * | 2017-06-20 | 2020-04-07 | 주식회사 엘지화학 | 고분자 전해질막, 이를 포함하는 전기화학 전지 및 흐름 전지, 고분자 전해질막용 조성물, 및 고분자 전해질막의 제조방법 |
US10818973B2 (en) * | 2017-10-25 | 2020-10-27 | Toyota Jidosha Kabushiki Kaisha | Electrolyte composition and lithium ion secondary battery |
CN111146441B (zh) * | 2018-11-06 | 2021-05-04 | Sk新技术株式会社 | 用于锂二次电池的正极活性材料及其制造方法 |
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US5686138A (en) * | 1991-11-12 | 1997-11-11 | Sanyo Electric Co., Ltd. | Lithium secondary battery |
DE69309861T2 (de) * | 1992-11-18 | 1997-09-11 | Sony Corp | Carbonatverbindungen, nicht wässrige Elektrolytlösungen und nicht wässrige Elektrolytlösungen enthaltende Batterien |
DE69531901T2 (de) * | 1994-07-07 | 2004-08-05 | Mitsui Chemicals, Inc. | Nichtwässrige Elektrolytlösungen und diese Elektrolytlösungen enthaltende Zellen |
US5830600A (en) | 1996-05-24 | 1998-11-03 | Sri International | Nonflammable/self-extinguishing electrolytes for batteries |
JPH10106625A (ja) * | 1996-10-03 | 1998-04-24 | Kao Corp | リチウム電池用非水電解液 |
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JP2000340259A (ja) | 2000-12-08 |
KR20000072956A (ko) | 2000-12-05 |
JP4129347B2 (ja) | 2008-08-06 |
US6232020B1 (en) | 2001-05-15 |
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