KR20070010155A - 리튬 이차 전지의 양극 재료용 층상 리튬 니켈 망간코발트계 복합 산화물의 분말 및 그 제조방법과, 그것을사용한 리튬 이차 전지용 양극, 및 리튬 이차 전지 - Google Patents
리튬 이차 전지의 양극 재료용 층상 리튬 니켈 망간코발트계 복합 산화물의 분말 및 그 제조방법과, 그것을사용한 리튬 이차 전지용 양극, 및 리튬 이차 전지 Download PDFInfo
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Abstract
Description
Claims (9)
- 하기의 식 (Ⅰ) 으로 표시되는 조성을 가지며, 40 MPa 의 압력으로 압착된 상태에서 5×105 Ω·㎝ 이하의 체적 저항률을 가지고, 0.025 이하의 C/S 값을 가지며, 여기서 C 는 탄소함유 농도 (중량%) 이고, S 는 BET비표면적 (㎡/g) 인 것을 특징으로 하는 리튬 이차 전지의 양극 재료용 층상 리튬-니켈-망간-코발트계 복합 산화물의 분말.Li1 + zNixMnyCo1 -X- YOδ (Ⅰ)(여기서, 0<z≤0.91, 0.1≤x≤0.55, 0.20≤y≤0.90, 0.50≤x+y≤1, 및 1.9≤δ≤3)
- 하기의 식 (Ⅱ) 으로 표시되는 조성을 가지며, 40 MPa 의 압력으로 압착된 상태에서 5×105 Ω·㎝ 이하의 체적 저항률을 가지고, 0.025 이하의 C/S 값을 가지며, 여기서 C 는 탄소함유 농도 (중량%) 이고, S 는 BET비표면적 (㎡/g) 인 것을 특징으로 하는 리튬 이차 전지의 양극 재료용 층상 리튬-니켈-망간-코발트계 복합 산화물의 분말.Li1 + zNixMnyCo1 -X- YO2 (Ⅱ)(여기서, 0<z≤0.15, 0.20≤x≤0.55, 0.20≤y≤0.55, 및 0.50≤x+y≤1)
- 제 1 항 또는 제 2 항에 있어서, 상기 식 (Ⅰ) 및 식 (Ⅱ) 에서, Mn/Ni 원자비율을 나타내는 y/x 의 값은 0.95≤y/x≤2.5 인 것을 특징으로 하는 리튬 이차 전지의 양극 재료용 층상 리튬-니켈-망간-코발트계 복합 산화물의 분말.
- 제 1 항 내지 제 3 항 중 어느 한 항에 있어서, 상기 탄소함유 농도는 0.025 중량% 이하인 것을 특징으로 하는 리튬 이차 전지의 양극 재료용 층상 리튬-니켈-망간-코발트계 복합 산화물의 분말.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서, 1.5 g/cc 이상의 체적밀도, 0.1 ~ 3 ㎛ 의 평균 일차 입자 직경 (B), 및 3 ~ 20 ㎛ 의 이차 입자 메디언 직경 (A) 을 갖는 것을 특징으로 하는 리튬 이차 전지의 양극 재료용 층상 리튬-니켈-망간-코발트계 복합 산화물의 분말.
- 제 1 항 내지 제 5 항 중 어느 한 항에 있어서, 상기 BET비표면적은 0.2 ~ 2.5 ㎡/g 인 것을 특징으로 하는 리튬 이차 전지의 양극 재료용 층상 리튬-니켈-망간-코발트계 복합 산화물의 분말.
- 제 1 항 내지 제 6 항 중 어느 한 항에 따른 리튬 이차 전지의 양극 재료용 층상 리튬-니켈-망간-코발트계 복합 산화물의 분말을 제조하는 공정에 있어서,니켈 화합물, 망간 화합물, 및 코발트 화합물을 액체 매체에서 0.3 ㎛ 이하의 평균 입자 직경으로 분쇄하여, 균일하게 분산된 화합물을 포함하는 슬러리를 제조하고, 상기 슬러리를 분무건조하여 일차 입자의 응집에 의해 형성된 이차 입자로 구성되는 분말을 구하며, 그 후 상기 분말과 1 이상의 리튬 화합물을 충분히 혼합하고, 이 혼합물을 산소함유 가스 분위기에서 소성하는 것을 특징으로 하는 리튬 이차 전지의 양극 재료용 층상 리튬-니켈-망간-코발트계 복합 산화물의 분말을 제조하는 공정.
- 제 1 항 내지 제 6 항에 중 어느 한 항에 따른 리튬 이차 전지의 양극 재료용 층상 리튬-니켈-망간-코발트계 복합 산화물의 분말, 및 바인더를 포함하는 양극 활성 재료 층을 갖는 집전체를 포함하는 리튬 이차 전지용 양극.
- 리튬을 흡장/방출가능한 음극, 리튬염을 포함하는 비수성 전해질, 및 리튬을 흡장/방출가능한 양극을 포함하며, 양극으로서 제 8 항에 따른 리튬 이차 전지용 양극이 사용되는 것을 특징으로 하는 리튬 이차 전지.
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KR101129864B1 (ko) * | 2008-10-30 | 2012-03-28 | 파나소닉 주식회사 | 비수전해질 이차전지용 양극 활물질 및 그 제조방법 |
US10714787B2 (en) | 2015-02-19 | 2020-07-14 | Envision Aesc Japan Ltd. | Lithium ion secondary battery |
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KR20090063441A (ko) | 2007-12-14 | 2009-06-18 | 삼성에스디아이 주식회사 | 리튬 이차 전지 |
EP2274788A4 (en) | 2008-03-07 | 2012-01-25 | Leyden Energy Inc | ELECTROCHEMICAL BATTERIES WITH TABS |
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KR100783293B1 (ko) * | 2005-08-16 | 2007-12-10 | 주식회사 엘지화학 | 양극 활물질 및 그것을 포함하고 있는 리튬 이차전지 |
KR101129864B1 (ko) * | 2008-10-30 | 2012-03-28 | 파나소닉 주식회사 | 비수전해질 이차전지용 양극 활물질 및 그 제조방법 |
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US20070202405A1 (en) | 2007-08-30 |
EP1742281B1 (en) | 2011-09-07 |
ATE523906T1 (de) | 2011-09-15 |
CN100440594C (zh) | 2008-12-03 |
CN1947288A (zh) | 2007-04-11 |
EP1742281A4 (en) | 2010-01-20 |
WO2005104274A1 (ja) | 2005-11-03 |
KR100946610B1 (ko) | 2010-03-09 |
EP1742281A1 (en) | 2007-01-10 |
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