KR20110080367A - 리튬 이차 전지용 음극 및 이를 포함하는 리튬 이차 전지 - Google Patents
리튬 이차 전지용 음극 및 이를 포함하는 리튬 이차 전지 Download PDFInfo
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Abstract
Description
무기염 종류 | 충전 용량 (mAh/cc) | 방전 용량 (mAh/cc) | 초기 효율 | |
비교예 1 | -- | 1929.1 | 1351.5 | 70.1 |
비교예 2 | Li2CO3 | 1901.8 | 1348.7 | 70.9 |
비교예 3 | LiF | 1876.0 | 1320.3 | 70.4 |
실시예 1 | K2CO3 | 1840.3 | 1347.3 | 73.2 |
실시예 2 | KCl | 1895.8 | 1384.9 | 73.1 |
실시예 3 | KF | 1941.6 | 1379.4 | 71.0 |
실시예 4 | Na2CO3 | 1851.3 | 1337.2 | 72.2 |
실시예 5 | NaCl | 1912.1 | 1375.5 | 71.9 |
실시예 6 | NaF | 1938.8 | 1377.0 | 71.0 |
무기염 종류 | 총 발열량 (%) |
|
비교예 1 | -- | 100 |
비교예 2 | Li2CO3 | 85 |
비교예 3 | LiF | 60 |
실시예 1 | K2CO3 | 5 |
실시예 2 | KCl | 5 |
실시예 3 | KF | 25 |
실시예 4 | Na2CO3 | 5 |
실시예 5 | NaCl | 55 |
실시예 6 | NaF | 35 |
무기염 종류 | 용량유지율 (%) |
|
비교예 1 | -- | 67 |
비교예 2 | Li2CO3 | 65 |
비교예 3 | LiF | 60 |
실시예 1 | K2CO3 | 73 |
실시예 2 | KCl | 81 |
실시예 3 | KF | 80 |
실시예 4 | Na2CO3 | 70 |
실시예 5 | NaCl | 71 |
실시예 6 | NaF | 73 |
112: 음극
113: 세퍼레이터
114: 양극
120: 전지 용기
140: 봉입 부재
Claims (11)
- 집전체;
상기 집전체 표면에 위치하고 음극 활물질을 포함하는 음극 활물질 조성물층; 및
상기 음극 활물질 조성물층 표면에 위치하고 무기염을 포함하는 무기염층을 포함하고,
상기 음극 활물질은 실리콘계 코어 및 상기 실리콘계 코어 표면 상에 위치하는 탄소층을 포함하는 것인 리튬 이차 전지용 음극. - 제1항에 있어서,
상기 실리콘계 코어는 Si, SiOx(0 < x < 2), Si-Z 합금(여기서, 상기 Z는 알칼리 금속, 알칼리 토금속, 13족 원소, 14족 원소, 전이금속, 희토류 원소 및 이들의 조합으로 이루어진 군에서 선택되는 원소이며, Si은 아님) 또는 이들의 조합을 포함하는 것인 리튬 이차 전지용 음극. - 제1항에 있어서,
상기 탄소층은 비정질 탄소를 포함하는 것인 리튬 이차 전지용 음극. - 제1항에 있어서,
상기 탄소층은 소프트 카본(soft carbon), 하드 카본(hard carbon), 메조페이스 피치 탄화물, 소성된 코크스 또는 이들의 혼합물의 비정질 탄소인 것인 리튬 이차 전지용 음극. - 제1항에 있어서,
상기 탄소층의 함량은 상기 음극 활물질 100 중량부에 대하여 1 내지 20 중량부인 것인 리튬 이차 전지용 음극. - 제1항에 있어서,
상기 탄소층의 두께는 1 내지 100 nm인 것인 리튬 이차 전지용 음극. - 제1항에 있어서,
상기 음극 활물질의 평균 입경은 1 ㎛ 내지 20 ㎛인 것인 리튬 이차 전지용 음극. - 제1항에 있어서,
상기 무기염은 Na 양이온, K 양이온 또는 이들의 조합의 알칼리 금속 양이온; 및 카보네이트 음이온, 할로겐 음이온 또는 이들의 조합의 음이온을 포함하는 것인 리튬 이차 전지용 음극 활물질 조성물. - 제1항에 있어서,
상기 무기염은 K2CO3, KCl, KF, Na2CO3, NaCl, NaF 또는 이들의 조합을 포함하는 것인 리튬 이차 전지용 음극 활물질 조성물. - 제1항에 있어서,
상기 무기염의 함량은 상기 음극 활물질 100 중량부에 대하여 0.1 중량부 내지 10 중량부인 것인 리튬 이차 전지용 음극. - 제1항 내지 제10항 중 어느 한 항에 따른 음극;
양극 활물질을 포함하는 양극; 및
비수 전해질
을 포함하는 리튬 이차 전지.
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US12/881,702 US20110165467A1 (en) | 2010-01-05 | 2010-09-14 | Negative electrode for rechargeable lithium battery and rechargeable lithium battery including the same |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US9306209B2 (en) | 2010-04-19 | 2016-04-05 | Ulsan National Institute Of Science And Technology | Method of preparing negative active material containing a carbon-coated silicon core for a rechargeable lithium battery and a rechargeable lithium battery |
KR20160057634A (ko) * | 2014-11-14 | 2016-05-24 | 한양대학교 산학협력단 | 고용량 리튬 저장 소재용 탄소 코팅된 메조기공 실리콘 산화물 입자 및 그 제조방법 |
WO2019139271A1 (ko) * | 2018-01-10 | 2019-07-18 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 음극 및 이를 포함하는 리튬 이차 전지 |
KR20210080656A (ko) * | 2019-12-20 | 2021-07-01 | 주식회사 포스코 | 리튬 이차 전지용 음극 활물질의 제조 방법, 이 방법으로 제조된 리튬 이차 전지용 음극 활물질, 및 이 음극 활물질을 포함하는 리튬 이차 전지 |
WO2021177589A1 (ko) * | 2020-03-04 | 2021-09-10 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 음극 및 리튬 이차 전지 |
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KR101342601B1 (ko) | 2011-06-30 | 2013-12-19 | 삼성에스디아이 주식회사 | 음극 활물질, 그 제조방법 및 이를 포함하는 리튬 전지 |
JP6256742B2 (ja) * | 2013-09-18 | 2018-01-10 | トヨタ自動車株式会社 | 非水電解質二次電池の製造方法 |
KR101615439B1 (ko) * | 2014-07-17 | 2016-05-13 | 오씨아이 주식회사 | 탄소-실리콘 복합체의 제조방법 |
KR101981609B1 (ko) * | 2015-09-24 | 2019-05-24 | 주식회사 엘지화학 | 리튬 이차전지용 음극활물질 및 그 제조방법 |
KR20210097303A (ko) * | 2020-01-30 | 2021-08-09 | 주식회사 엘지에너지솔루션 | 음극 활물질, 이를 포함하는 음극 및 이차전지 |
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JP3952180B2 (ja) | 2002-05-17 | 2007-08-01 | 信越化学工業株式会社 | 導電性珪素複合体及びその製造方法並びに非水電解質二次電池用負極材 |
TWI278429B (en) * | 2002-05-17 | 2007-04-11 | Shinetsu Chemical Co | Conductive silicon composite, preparation thereof, and negative electrode material for non-aqueous electrolyte secondary cell |
JP4344121B2 (ja) * | 2002-09-06 | 2009-10-14 | パナソニック株式会社 | 非水電解質二次電池用負極材料と非水電解質二次電池 |
US7432015B2 (en) * | 2004-02-25 | 2008-10-07 | Samsung Sdi Co., Ltd. | Negative active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery comprising the same |
KR100570651B1 (ko) | 2004-02-25 | 2006-04-12 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 음극 활물질, 그의 제조 방법 및 그를포함하는 리튬 이차 전지 |
WO2006075552A1 (ja) * | 2005-01-11 | 2006-07-20 | Matsushita Electric Industrial Co., Ltd. | リチウム二次電池用負極材料、それを用いた負極、この負極を用いたリチウム二次電池、及び負極材料の製造方法 |
JP4740753B2 (ja) * | 2005-01-28 | 2011-08-03 | 三星エスディアイ株式会社 | 充放電するリチウム電池、及び充放電するリチウム電池の負極に含まれる負極活物質の製造方法 |
JP5039956B2 (ja) * | 2006-09-07 | 2012-10-03 | トヨタ自動車株式会社 | 負極活物質、負極およびリチウム二次電池 |
-
2010
- 2010-01-05 KR KR1020100000546A patent/KR101073017B1/ko active IP Right Grant
- 2010-09-14 US US12/881,702 patent/US20110165467A1/en not_active Abandoned
Cited By (6)
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US9306209B2 (en) | 2010-04-19 | 2016-04-05 | Ulsan National Institute Of Science And Technology | Method of preparing negative active material containing a carbon-coated silicon core for a rechargeable lithium battery and a rechargeable lithium battery |
KR20160057634A (ko) * | 2014-11-14 | 2016-05-24 | 한양대학교 산학협력단 | 고용량 리튬 저장 소재용 탄소 코팅된 메조기공 실리콘 산화물 입자 및 그 제조방법 |
WO2019139271A1 (ko) * | 2018-01-10 | 2019-07-18 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 음극 및 이를 포함하는 리튬 이차 전지 |
KR20210080656A (ko) * | 2019-12-20 | 2021-07-01 | 주식회사 포스코 | 리튬 이차 전지용 음극 활물질의 제조 방법, 이 방법으로 제조된 리튬 이차 전지용 음극 활물질, 및 이 음극 활물질을 포함하는 리튬 이차 전지 |
WO2021125711A3 (ko) * | 2019-12-20 | 2021-08-05 | 주식회사 포스코 | 리튬 이차 전지용 음극 활물질의 제조 방법, 이 방법으로 제조된 리튬 이차 전지용 음극 활물질, 및 이 음극 활물질을 포함하는 리튬 이차 전지 |
WO2021177589A1 (ko) * | 2020-03-04 | 2021-09-10 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 음극 및 리튬 이차 전지 |
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US20110165467A1 (en) | 2011-07-07 |
KR101073017B1 (ko) | 2011-10-12 |
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