KR100657225B1 - 전지의 안전성을 향상시키기 위한 전해액 용매 및 이를포함하는 리튬 이차 전지 - Google Patents
전지의 안전성을 향상시키기 위한 전해액 용매 및 이를포함하는 리튬 이차 전지 Download PDFInfo
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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
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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
- H01M10/0569—Liquid materials characterised by the solvents
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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
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
- H01M2300/0034—Fluorinated solvents
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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
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- 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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- 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
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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
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Abstract
Description
용매 | 점도 (상온) | 유전상수 | 분자량 |
F1EC | 4.1 | 78.4 | 106.1 |
trans-F2EC | 2.5 | 37.1 | 124.0 |
TFPC | 5.0 | 62.5 | 156.0 |
EC | 2.5 | 89 | 88.1 |
PC | 2.53 | 65 | 102.1 |
DMC | 0.59 | 3.1 | 90.1 |
EMC | 0.65 | 3.0 | 104.1 |
DEC | 0.75 | 2.8 | 118.1 |
EA | 0.44 | 6.0 | 88.11 |
MP | 0.43 | 6.2 | 88.11 |
LiPF6 (농도 M) | F1EC (부피%) | EC (부피%) | PC (부피%) | EMC (부피%) | DMC (부피%) | |
실시예 1 | 0.8 | 25 | 75 | |||
실시예 2 | 0.8 | 33 | 67 | |||
실시예 3 | 0.8 | 40 | 60 | |||
실시예 4 | 0.8 | 50 | 50 | |||
실시예 5 | 0.8 | 60 | 40 | |||
실시예 6 | 1.0 | 33 | 67 | |||
실시예 7 | 1.2 | 33 | 67 | |||
실시예 8 | 0.8 | 25 | 75 | |||
실시예 9 | 0.8 | 33 | 67 | |||
실시예 10 | 0.8 | 40 | 60 | |||
실시예 11 | 0.8 | 50 | 50 | |||
실시예 12 | 0.8 | 60 | 40 | |||
비교예 1 | 0.8 | 10 | 90 | |||
비교예 2 | 0.8 | 70 | 30 | |||
비교예 3 | 0.8 | 33 | 67 | |||
비교예 4 | 0.8 | 33 | 67 | |||
비교예 5 | 0.8 | 23 | 10 | 67 |
비교예 6 | 0.8 | 13 | 20 | 67 | ||
비교예 7 | 0.8 | 50 | 50 |
상온이온 전도도 (mS/cm) | 방전 특성 (용량1C/ 용량0.2C) % | 충전 전압 (V) | 150 ℃에서 유지시간 | |
실시예 1 | 8.24 | 97.5 | 4.2 | 90분이상 |
실시예 2 | 8.40 | 94.6 | 4.2 | 90분이상 |
실시예 3 | 8.60 | 96.1 | 4.2 | 90분이상 |
실시예 4 | 7.95 | 96.2 | 4.2 | 90분이상 |
실시예 5 | 7.56 | 93.5 | 4.2 | 90분이상 |
실시예 6 | 8.88 | 97.5 | 4.2 | 90분이상 |
실시예 7 | 8.47 | 97.7 | 4.2 | 32분 |
실시예 8 | 10.5 | 98.1 | 4.2 | 90분이상 |
실시예 9 | 10.6 | 98.2 | 4.2 | 90분이상 |
실시예 10 | 9.9 | 97.6 | 4.2 | 90분이상 |
실시예 11 | 9.5 | 97.5 | 4.2 | 90분이상 |
실시예 12 | 8.7 | 96.3 | 4.2 | 90분이상 |
비교예 1 | 6.25 | 94.3 | 4.2 | 90분이상 |
비교예 2 | 7.04 | 95.5 | 4.2 | 90분이상 |
비교예 3 | 8.9 | 96.5 | 4.2 | 30분 |
비교예 4 | 11.8 | 98.1 | 4.2 | 25분 |
비교예 5 | 8.41 | 97.1 | 4.2 | 60분 |
비교예 6 | 8.56 | 97.0 | 4.2 | 30분 |
비교예 7 | 5.8 | -* | 4.2 | -* |
-* 전해액의 높은 점도로 인하여 전극이 함침되지 않아 실험 불가. |
Claims (5)
- 플루오르 에틸렌 카보네이트를 20 내지 60 부피% 범위로 포함하고 충전 전압 4.35V (~4.35V)에서도 사용 가능한 이차 전지용 전해액 용매로서, 선형 에스테르계 용매를 사용하여 이온 전도도가 7 mS/cm 이상으로 조절된 것이 특징인 이차전지용 전해액 용매.
- 제1항에 있어서, 상기 선형 에스테르계 용매는 총 전해액 용매 기준으로 부피 비율 40 내지 80%로 포함되는 것을 특징으로 하는 이차전지용 전해액 용매.
- 제1항에 있어서, 상기 플루오르 에틸렌 카보네이트는 모노플루오르 에틸렌 카보네이트 및 디플루오르 에틸렌 카보네이트로 구성된 군에서 선택되는 1종 이상인 것을 특징으로 하는 이차전지용 전해액 용매.
- 제1항에 있어서, 상기 선형 에스테르계 용매는 에틸메틸 카보네이트, 디메틸 카보네이트, 디에틸 카보네이트, 에틸 아세테이트 및 메틸 프로피오네이트로 구성된 군에서 선택되는 1종 이상인 것을 특징으로 하는 이차전지용 전해액 용매.
- 양극, 음극 및 전해액을 포함하는 리튬 이차 전지에 있어서, 상기 전해액은 제1항 내지 제4항 중 어느 하나의 항의 이차 전지용 전해액 용매 및 리튬염을 포함하는 것인 리튬 이차 전지.
Applications Claiming Priority (2)
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KR20030062206 | 2003-09-05 | ||
KR1020030062206 | 2003-09-05 |
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KR20050024270A KR20050024270A (ko) | 2005-03-10 |
KR100657225B1 true KR100657225B1 (ko) | 2006-12-14 |
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KR1020040070099A Expired - Lifetime KR100657225B1 (ko) | 2003-09-05 | 2004-09-02 | 전지의 안전성을 향상시키기 위한 전해액 용매 및 이를포함하는 리튬 이차 전지 |
KR1020040071019A Expired - Lifetime KR100751205B1 (ko) | 2003-09-05 | 2004-09-06 | 전지의 성능을 향상시키기 위한 전해액 및 이를 포함하는리튬 이차 전지 |
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KR1020040071019A Expired - Lifetime KR100751205B1 (ko) | 2003-09-05 | 2004-09-06 | 전지의 성능을 향상시키기 위한 전해액 및 이를 포함하는리튬 이차 전지 |
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US (3) | US8158285B2 (ko) |
EP (2) | EP1661200B1 (ko) |
JP (1) | JP4536724B2 (ko) |
KR (2) | KR100657225B1 (ko) |
CN (2) | CN1846326A (ko) |
BR (1) | BRPI0413390B1 (ko) |
TW (1) | TWI255060B (ko) |
WO (1) | WO2005024991A1 (ko) |
Cited By (1)
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2004
- 2004-09-02 KR KR1020040070099A patent/KR100657225B1/ko not_active Expired - Lifetime
- 2004-09-03 TW TW093126793A patent/TWI255060B/zh not_active IP Right Cessation
- 2004-09-06 EP EP04774513.8A patent/EP1661200B1/en not_active Expired - Lifetime
- 2004-09-06 BR BRPI0413390-0A patent/BRPI0413390B1/pt active IP Right Grant
- 2004-09-06 EP EP13152483.7A patent/EP2605323B1/en not_active Expired - Lifetime
- 2004-09-06 WO PCT/KR2004/002252 patent/WO2005024991A1/en active Application Filing
- 2004-09-06 CN CNA200480025357XA patent/CN1846326A/zh active Pending
- 2004-09-06 KR KR1020040071019A patent/KR100751205B1/ko not_active Expired - Lifetime
- 2004-09-06 JP JP2006526023A patent/JP4536724B2/ja not_active Expired - Lifetime
- 2004-09-06 CN CN201010576746.9A patent/CN102104172B/zh not_active Expired - Lifetime
- 2004-09-07 US US10/935,027 patent/US8158285B2/en active Active
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2012
- 2012-03-20 US US13/424,925 patent/US8288039B2/en not_active Expired - Lifetime
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KR101165887B1 (ko) * | 2007-02-06 | 2012-07-13 | 다이킨 고교 가부시키가이샤 | 비수계 전해액 |
US8871384B2 (en) | 2007-02-06 | 2014-10-28 | Daikin Industries, Ltd. | Non-aqueous electrolytic solution |
Also Published As
Publication number | Publication date |
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EP2605323B1 (en) | 2015-10-28 |
KR20050025101A (ko) | 2005-03-11 |
EP1661200A1 (en) | 2006-05-31 |
CN102104172A (zh) | 2011-06-22 |
TW200520276A (en) | 2005-06-16 |
TWI255060B (en) | 2006-05-11 |
WO2005024991A1 (en) | 2005-03-17 |
JP2007504628A (ja) | 2007-03-01 |
EP1661200A4 (en) | 2009-09-30 |
US8288039B2 (en) | 2012-10-16 |
US8158285B2 (en) | 2012-04-17 |
US8372549B2 (en) | 2013-02-12 |
CN1846326A (zh) | 2006-10-11 |
US20120177956A1 (en) | 2012-07-12 |
EP2605323A1 (en) | 2013-06-19 |
KR100751205B1 (ko) | 2007-08-22 |
JP4536724B2 (ja) | 2010-09-01 |
KR20050024270A (ko) | 2005-03-10 |
US20050031963A1 (en) | 2005-02-10 |
US20120177999A1 (en) | 2012-07-12 |
CN102104172B (zh) | 2017-08-08 |
BRPI0413390B1 (pt) | 2017-09-12 |
BRPI0413390A (pt) | 2006-10-17 |
EP1661200B1 (en) | 2013-05-22 |
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