KR20100005416A - 리튬이차전지 - Google Patents
리튬이차전지 Download PDFInfo
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- KR20100005416A KR20100005416A KR1020080065442A KR20080065442A KR20100005416A KR 20100005416 A KR20100005416 A KR 20100005416A KR 1020080065442 A KR1020080065442 A KR 1020080065442A KR 20080065442 A KR20080065442 A KR 20080065442A KR 20100005416 A KR20100005416 A KR 20100005416A
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Abstract
Description
양극활물질 | 리튬염 (LiPF6) 농도 | VEC | FEC | SN | 수명 300회째 초기대비% | 60℃ 1달 방치 후 전압V | ||
비교예1 | LCO | 1M | 0 | 0 | 0 | OK 85 | OK 4.13 | |
비교예2 | NCM | 1M | 0 | 0 | 0 | NG 60 | NG 0.38 | |
비교예3 | NCM | 1.1M | 0 | 0 | 0 | NG 65 | NG 1.58 | |
비교예4 | NCM | 1.15M | 0 | 0 | 0 | NG 70 | NG 2.45 | |
비교예5 | NCM | 1.15M | 0.5 | 0.5 | 0 | NG 75 | NG 2.78 | |
비교예6 | NCM | 1.15M | 1 | 1 | 0 | OK 80 | NG 2.12 | |
비교예7 | NCM | 1.15M | 2 | 2 | 0 | OK 82 | NG 2.08 | |
비교예8 | NCM | 1.15M | 3 | 4 | 0.1 | OK 85 | NG 3.47 | |
비교예9 | NCM | 1.15M | 4 | 6 | 0.2 | OK 88 | NG 3.78 | |
비교예10 | NCM | 1.15M | 5 | 10 | 0.4 | OK 87 | NG 3.81 | |
비교예11 | NCM | 1.15M | 3 | 4 | 6 | NG 78 | OK 4.05 | |
비교예12 | NCM | 1.15M | 3 | 4 | 8 | NG 77 | OK 4.08 | |
비교예13 | NCM | 1.2M | 0 | 0 | 0 | NG 61 | NG 0.98 | |
비교예14 | NCM | 1.2M | 0.5 | 0.5 | 0 | NG 79 | NG 1.45 | |
비교예15 | NCM | 1.2M | 1 | 1 | 0 | OK 82 | NG 1.35 | |
비교예16 | NCM | 1.2M | 3 | 4 | 0 | OK 85 | NG 1.25 | |
비교예17 | NCM | 1.2M | 5 | 10 | 0.3 | OK 86 | NG 3.45 | |
비교예18 | NCM | 1.2M | 6 | 11 | 1 | NG 78 | OK 4.13 | |
비교예19 | NCM | 1.2M | 7 | 12 | 1 | NG 77 | OK 4.13 | |
비교예20 | NCM | 1.2M | 0 | 0 | 0.5 | NG 25 | OK 4.12 | |
비교예21 | NCM | 1.2M | 0 | 0 | 2 | NG 22 | OK 4.13 | |
비교예22 | NCM | 1.2M | 0 | 0 | 5 | NG 23 | OK 4.14 | |
실시예1 | NCM | 1.15M | 1 | 1 | 0.5 | OK 93 | OK 4.11 | |
실시예2 | NCM | 1.15M | 2 | 2 | 0.5 | OK 92 | OK 4.12 | |
실시예3 | NCM | 1.15M | 5 | 5 | 1 | OK 88 | OK 4.10 | |
실시예4 | NCM | 1.15M | 5 | 5 | 2 | OK 86 | OK 4.09 | |
실시예5 | NCM | 1.15M | 5 | 10 | 5 | OK 85 | OK 4.08 | |
실시예6 | NCM | 1.3M | 1 | 1 | 0.5 | OK 91 | OK 4.12 | |
실시예7 | NCM | 1.3M | 2 | 2 | 0.5 | OK 90 | OK 4.13 | |
실시예8 | NCM | 1.3M | 5 | 5 | 1 | OK 89 | OK 4.14 | |
실시예9 | NCM | 1.3M | 5 | 5 | 2 | OK 88 | OK 4.16 | |
실시예10 | NCM | 1.3M | 5 | 10 | 5 | OK 86 | OK 4.08 | |
실시예11 | NCM | 1.5M | 1 | 1 | 0.5 | OK 86 | OK 4.07 | |
실시예12 | NCM | 1.5M | 2 | 2 | 0.5 | OK 88 | OK 4.06 | |
실시예13 | NCM | 1.5M | 5 | 5 | 1 | OK 86 | OK 4.05 | |
실시예14 | NCM | 1.5M | 5 | 5 | 2 | OK 87 | OK 4.07 | |
실시예 15 | NCM | 1.5M | 5 | 10 | 5 | OK 86 | OK 4.12 | |
실시예 16 | NCM | 1.5M | 2 | 0 | 2 | OK 87 | OK 4.11 | |
실시예 17 | NCM | 1.5M | 0 | 5 | 2 | OK 87 | OK 4.09 | |
실시예 18 | NCM | 1.6M | 2 | 5 | 2 | OK 84 | OK 4.10 | |
실시예 19 | NCM | 1.8M | 2 | 5 | 2 | OK 82 | OK 4.12 |
Claims (11)
- 음극, 양극, 상기 양극과 음극 사이에 개재되는 세퍼레이터, 리튬염, 비수성 유기용매 및 전해액을 포함하는 리튬 이차전지에 있어서,상기 양극이 삼원계 양극활물질을 포함하며,상기 전해액이 첨가제로서 석시노니트릴 0.5~5 중량%; 및 할로겐화 에틸렌 카보네이트 1~10중량% 및 비닐에틸렌 카보네이트 1~5 중량% 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 리튬이차전지.
- 제 1 항에 있어서,상기 할로겐화 에틸렌 카보네이트가 플루오로에틸렌카보네이트인 것을 특징으로 하는 리튬이차전지.
- 제 1 항에 있어서,상기 삼원계 양극활물질이 하기 화학식 1의 NCM계 양극화합물인 것을 특징으로 하는 리튬이차전지:화학식 1LixNi1 -y- zCoyMnzOα상기 식에서 0.9≤x≤1.1, 0≤y≤0.5, 0≤z≤0.5, 0≤α≤2 이다.
- 제 3 항에 있어서,상기 NCM계 양극활물질이 LiNi0 .5Co0 .2Mn0 .3O2인 것을 특징으로 하는 리튬이차전지.
- 제1항에 있어서,상기 리튬염이 LiPF6, LiBF4, LiSbF6, LiAsF6, LiClO4, LiCF3SO3, LiN(SO2CF3)2, LiN(SO2C2F5)2, LiC(SO2CF3)3, LiN(SO3CF3)2, LiC4F9SO3, LiAlO4, LiAlCl4, LiCl 및 LiI로 이루어진 군에서 선택되는 1종 또는 2종 이상인 것을 특징으로 하는 리튬 이차전지.
- 제1항에 있어서,상기 리튬염이 1.15 ~ 1.5 M로 첨가된 것을 특징으로 하는 리튬이차전지.
- 제1항에 있어서,상기 비수성 유기용매가 카보네이트, 에스테르, 에테르 및 케톤으로 이루어진 군에서 선택되는 적어도 하나의 용매를 포함하는 것을 특징으로 하는 리튬이차 전지.
- 제7항에 있어서,상기 카보네이트가 환형 카보네이트와 사슬형 카보네이트의 혼합 용매인 것을 특징으로 하는 리튬이차전지.
- 제8항에 있어서,상기 환형 카보네이트가 에틸렌 카보네이트, 프로필렌 카보네이트, 1,2-부틸렌 카보네이트, 2,3-부틸렌 카보네이트, 1,2-펜틸렌 카보네이트 및 2,3-펜틸렌 카보네이트로 이루어진 군에서 선택되는 적어도 하나의 용매인 것을 특징으로 하는 리튬이차전지.
- 제8항에 있어서,상기 사슬형 카보네이트가 디메틸 카보네이트, 디에틸 카보네이트, 디프로필 카보네이트, 메틸프로필 카보네이트, 에틸메틸 카보네이트 및 에틸프로필 카보네이트로 이루어진 군에서 선택되는 적어도 하나의 용매인 것을 특징으로 하는 리튬이차전지.
- 제1항에 있어서,상기 비수성 유기용매가 에틸 카보네이트, 에틸메틸 카보네이트, 디메틸 카보네이트, 디에틸 카보네이트 및 프로필렌 카보네이트로 이루어진 군으로부터 선택된 3종 이상의 혼합물인 것을 특징으로 하는 리튬이차전지.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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KR1020080065442A KR101050333B1 (ko) | 2008-07-07 | 2008-07-07 | 리튬이차전지 |
JP2008292467A JP5202239B2 (ja) | 2008-07-07 | 2008-11-14 | リチウム二次電池 |
US12/458,219 US8263267B2 (en) | 2008-07-07 | 2009-07-06 | Rechargeable battery and associated methods |
EP09164671.1A EP2154746B1 (en) | 2008-07-07 | 2009-07-06 | Rechargeable Battery |
CN200910140202A CN101626098A (zh) | 2008-07-07 | 2009-07-07 | 可再充电电池及相关方法 |
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KR1020080065442A KR101050333B1 (ko) | 2008-07-07 | 2008-07-07 | 리튬이차전지 |
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KR20100005416A true KR20100005416A (ko) | 2010-01-15 |
KR101050333B1 KR101050333B1 (ko) | 2011-07-19 |
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US (1) | US8263267B2 (ko) |
EP (1) | EP2154746B1 (ko) |
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CN (1) | CN101626098A (ko) |
Cited By (4)
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US8703340B2 (en) | 2009-02-13 | 2014-04-22 | Lg Chem, Ltd. | Lithium secondary battery with improved energy density |
US9196928B2 (en) | 2010-03-16 | 2015-11-24 | Samsung Sdi Co., Ltd. | Electrolyte solution for rechargeable lithium battery, and rechargeable lithium battery including the same |
WO2013180522A1 (ko) * | 2012-05-31 | 2013-12-05 | 주식회사 엘지화학 | 리튬 이차전지 |
US9287559B2 (en) | 2012-05-31 | 2016-03-15 | Lg Chem, Ltd. | Lithium secondary battery |
KR20160083638A (ko) | 2014-12-31 | 2016-07-12 | 삼성에스디아이 주식회사 | 리튬 이차전지용 양극 활물질 및 이를 포함하는 리튬 이차전지 |
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EP2154746A1 (en) | 2010-02-17 |
KR101050333B1 (ko) | 2011-07-19 |
US8263267B2 (en) | 2012-09-11 |
CN101626098A (zh) | 2010-01-13 |
EP2154746B1 (en) | 2013-05-01 |
US20100015521A1 (en) | 2010-01-21 |
JP2010015968A (ja) | 2010-01-21 |
JP5202239B2 (ja) | 2013-06-05 |
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