KR20190012364A - 비수전해액용 첨가제, 이를 포함하는 리튬 이차전지용 비수전해액 및 리튬 이차전지 - Google Patents
비수전해액용 첨가제, 이를 포함하는 리튬 이차전지용 비수전해액 및 리튬 이차전지 Download PDFInfo
- Publication number
- KR20190012364A KR20190012364A KR1020170095194A KR20170095194A KR20190012364A KR 20190012364 A KR20190012364 A KR 20190012364A KR 1020170095194 A KR1020170095194 A KR 1020170095194A KR 20170095194 A KR20170095194 A KR 20170095194A KR 20190012364 A KR20190012364 A KR 20190012364A
- Authority
- KR
- South Korea
- Prior art keywords
- formula
- secondary battery
- aqueous electrolyte
- lithium
- nonaqueous electrolyte
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 46
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- 239000000654 additive Substances 0.000 title claims abstract description 38
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- 150000001875 compounds Chemical class 0.000 claims description 37
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- 239000000203 mixture Substances 0.000 claims description 15
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
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- 125000001153 fluoro group Chemical group F* 0.000 claims description 10
- 239000003960 organic solvent Substances 0.000 claims description 10
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- 159000000002 lithium salts Chemical class 0.000 claims description 9
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
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- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNKYTQGIUYNRMY-UHFFFAOYSA-N methoxypropane Chemical compound CCCOC VNKYTQGIUYNRMY-UHFFFAOYSA-N 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- KKQAVHGECIBFRQ-UHFFFAOYSA-N methyl propyl carbonate Chemical compound CCCOC(=O)OC KKQAVHGECIBFRQ-UHFFFAOYSA-N 0.000 description 1
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- 229910052750 molybdenum Inorganic materials 0.000 description 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- MHYFEEDKONKGEB-UHFFFAOYSA-N oxathiane 2,2-dioxide Chemical compound O=S1(=O)CCCCO1 MHYFEEDKONKGEB-UHFFFAOYSA-N 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- 229940002612 prodrug Drugs 0.000 description 1
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- YCCPTBSIWCOONA-UHFFFAOYSA-N prop-1-ene;sulfurous acid Chemical compound CC=C.OS(O)=O YCCPTBSIWCOONA-UHFFFAOYSA-N 0.000 description 1
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- 229920001384 propylene homopolymer Polymers 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
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- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/62—Halogen-containing esters
- C07C69/65—Halogen-containing esters of unsaturated acids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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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
- 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
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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
- H01M10/42—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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- 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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- 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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- Secondary Cells (AREA)
Abstract
Description
실시예 | 혼합액 (g) |
첨가제 | 충방전 가능한 전지 수 (가능/제조) |
Fe 이물 첨가 시 고온 저장 후 전압 (V) |
|
화학식 | 함량 (g) | ||||
실시예 1 | 99.5 | 1a | 0.5 | 6/8 | 4.06 |
실시예 2 | 99.5 | 1b | 0.5 | 6/8 | 4.03 |
실시예 3 | 99.5 | 1c | 0.5 | 8/8 | 4.12 |
실시예 4 | 99.5 | 1d | 0.5 | 6/8 | 4.03 |
실시예 5 | 99.5 | 1e | 0.5 | 7/8 | 4.03 |
실시예 6 | 99.5 | 1f | 0.5 | 5/8 | 4.08 |
실시예 7 | 99.5 | 1g | 0.5 | 7/8 | 4.05 |
실시예 8 | 99.5 | 1h | 0.5 | 6/8 | 4.09 |
실시예 9 | 99.5 | 1i | 0.5 | 7/8 | 4.04 |
실시예 10 | 99.5 | 1j | 0.5 | 7/8 | 4.06 |
실시예 11 | 93 | 1a | 7 | 8/8 | 4.05 |
실시예 12 | 90 | 1a | 10 | 8/8 | 4.07 |
비교예 1 | 100 | - | - | 2/8 | 3.14 |
비교예 2 | 99.5 | 2 | 0.5 | 3/8 | 3.35 |
혼합액 (g) |
첨가제 | 잔존 방전량(%) |
회복 방전량 (%) |
사이클 용량 보유율 (%) |
||
화학식 | 함량(g) | |||||
실시예 1 | 99.5 | 1a | 0.5 | 83 | 93 | 88 |
실시예 2 | 99.5 | 1b | 0.5 | 83 | 91 | 86 |
실시예 3 | 99.5 | 1c | 0.5 | 87 | 97 | 91 |
실시예 4 | 99.5 | 1d | 0.5 | 82 | 93 | 86 |
실시예 5 | 99.5 | 1e | 0.5 | 81 | 94 | 87 |
실시예 6 | 99.5 | 1f | 0.5 | 83 | 90 | 87 |
실시예 7 | 99.5 | 1g | 0.5 | 86 | 95 | 84 |
실시예 8 | 99.5 | 1h | 0.5 | 86 | 94 | 83 |
실시예 9 | 99.5 | 1i | 0.5 | 85 | 94 | 82 |
실시예 10 | 99.5 | 1j | 0.5 | 86 | 92 | 85 |
실시예 11 | 93 | 1a | 7 | 78 | 85 | 78 |
실시예 12 | 90 | 1a | 10 | 73 | 80 | 72 |
비교예 1 | 100 | - | - | 65 | 75 | 65 |
비교예 2 | 99.5 | 2 | 0.5 | 66 | 75 | 62 |
Claims (8)
- 청구항 3에 있어서,
상기 리튬염은 양이온으로 Li+를 포함하고,
음이온으로 F-, Cl-, Br-, I-, NO3 -, N(CN)2 -, BF4 -, ClO4 -, AlO4 -, AlCl4 -, PF6 -, SbF6 -, AsF6 -, BF2C2O4 -, BC4O8 - , PO2F2 -, PF4C2O4 -, PF2C4O8 -, (CF3)2PF4 -, (CF3)3PF3 -, (CF3)4PF2 -, (CF3)5PF-, (CF3)6P-, CF3SO3 -, C4F9SO3 -, CF3CF2SO3 -, (CF3SO2)2N-, (FSO2)2N-, CF3CF2(CF3)2CO-, (CF3SO2)2CH-, (SF5)3C-, (CF3SO2)3C-, CF3(CF2)7SO3 -, CF3CO2 -, CH3CO2 -, SCN- 및 (CF3CF2SO2)2N-로 이루어진 군으로부터 선택된 어느 하나인 것인 리튬 이차전지용 비수전해액.
- 청구항 3에 있어서,
상기 유기용매는 에테르계 용매, 에스테르계 용매, 및 아미드계 용매로 이루어진 군으로부터 선택된 어느 하나 또는 이들 중 2종 이상의 혼합물을 포함하는 것인 리튬 이차전지용 비수전해액.
- 청구항 5에 있어서,
상기 에스테르계 용매는 환형 카보네이트 화합물, 선형 카보네이트 화합물, 선형 에스테르 화합물, 및 환형 에스테르 화합물로 이루어진 군으로부터 선택된 적어도 하나 이상의 화합물을 포함하는 것인 리튬 이차전지용 비수전해액.
- 청구항 3에 있어서,
상기 비수전해액 첨가제는 비수전해액 전체 중량을 기준으로 0.05 중량% 내지 10 중량% 함량으로 포함되는 것인 리튬 이차전지용 비수전해액.
- 음극, 양극, 상기 음극 및 양극 사이에 개재된 분리막, 및 비수전해액을 구비하는 리튬 이차전지에 있어서,
상기 비수전해액은 청구항 3의 리튬 이차전지용 비수전해액인 리튬 이차전지.
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WO2023219474A1 (ko) * | 2022-05-13 | 2023-11-16 | 주식회사 엘지에너지솔루션 | 비수 전해질 및 이를 포함하는 리튬 이차전지 |
KR20230159314A (ko) * | 2022-05-13 | 2023-11-21 | 주식회사 엘지에너지솔루션 | 비수 전해질 및 이를 포함하는 리튬 이차전지 |
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KR102651787B1 (ko) | 2021-07-14 | 2024-03-26 | 주식회사 엘지에너지솔루션 | 리튬 이차전지용 비수계 전해액 및 이를 포함하는 리튬 이차전지 |
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US3951486A (en) | 1974-06-03 | 1976-04-20 | Apollo Plastics, Inc. | Organizer file and briefcase-desk combination for vehicles |
JP2007066864A (ja) | 2005-08-05 | 2007-03-15 | Ube Ind Ltd | 非水電解液及びそれを用いたリチウム二次電池 |
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KR20230159314A (ko) * | 2022-05-13 | 2023-11-21 | 주식회사 엘지에너지솔루션 | 비수 전해질 및 이를 포함하는 리튬 이차전지 |
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