KR20070095200A - 화학양론적 리튬 코발트 산화물 및 그 제조방법 - Google Patents
화학양론적 리튬 코발트 산화물 및 그 제조방법 Download PDFInfo
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- KR20070095200A KR20070095200A KR1020070025782A KR20070025782A KR20070095200A KR 20070095200 A KR20070095200 A KR 20070095200A KR 1020070025782 A KR1020070025782 A KR 1020070025782A KR 20070025782 A KR20070025782 A KR 20070025782A KR 20070095200 A KR20070095200 A KR 20070095200A
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Abstract
Description
Claims (22)
- 리튬 코발트 산화물이 리튬 버퍼물질과 리튬 화학포텐셜의 평형을 이루도록 열처리됨으로써, 화학양론적 조성의 LiCoO2를 함유하는 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 상기 리튬 버퍼물질은 LiCoO2의 잉여 리튬(Li excess) 형태인 Li2CO3으로부터 Li를 빼앗아 Li2CO3을 분해하거나, 부족 리튬(Li deficiency) 형태인 코발트 산화물에 Li을 공급하여 LiCoO2를 생성하도록 하는 물질인 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 상기 리튬 버퍼물질은 LizMO2 (여기서, 0.95 < z < 1.1 이고; M = Ni1 -x- yMnxCoy 이며, 여기서, 0 < y < 0.5 이고, Ni에 대한 Mn의 비율(x/(1-x-y))은 0.4 내지 1.1 이다)인 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 상기 리튬 버퍼물질은 LiMn1 /3Ni1 /3Co1 /3O2인 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 상기 열처리 온도는 LiCoO2와 리튬 버퍼물질 간의 반응에 의해 새로운 화합물을 형성하지 않을 정도의 온도를 상한으로 하는 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 상기 열처리 온도는 400℃ ~ 1100℃의 범위인 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 상기 LiCoO2의 함량이 적어도 40% 이상인 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 상기 LiCoO2와 리튬 버퍼물질이 서로 혼합되어 접촉하고 있는 상태인 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 상기 리튬 버퍼물질이 LiCoO2 표면을 둘러싼 코어쉘 형태인 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 적어도 1 kg의 스케일로 제조되는 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 적어도 20 kg의 스케일로 제조되는 것이 특징인 LiCoO2 함유 분말.
- 제 1 항에 있어서, 이차전지의 양극 활물질로 사용되는 것이 특징인 LiCoO2 함유 분말.
- LiCoO2가 리튬 버퍼물질과 리튬 화학포텐셜의 평형을 이루어 공존하며, LiCoO2와 코발트 산화물의 평형 리튬 화학포텐셜 보다 높고, LiCoO2와 Li2CO3의 평형 리튬 화학포텐셜 보다 낮은 범위의, 일정하게 고정된 리튬 화학포텐셜을 갖는 것이 특징인 LiCoO2 함유 분말.
- Li의 억셉터 또는 도너로 작용하여, 화학양론적 리튬 금속 산화물과 공존하는 잉여 리튬(Li excess)을 제거하거나, 부족 리튬(Li deficiency)을 보충하는 리튬 버퍼물질.
- 제 14 항에 있어서, LiCoO2의 잉여 리튬 형태인 Li2CO3으로부터 Li를 빼앗아 Li2CO3을 분해하거나, 부족 리튬 형태인 코발트 산화물에 Li을 공급하여 LiCoO2를 생성하는 것이 특징인 리튬 버퍼물질.
- 제 14 항에 있어서, 상기 물질은 LizMO2 (여기서, 0.95 < z < 1.1 이고; M = Ni1-x-yMnxCoy 이며, 여기서, 0 < y < 0.5 이고, Ni에 대한 Mn의 비율(x/(1-x-y))은 0.4 내지 1.1 이다)인 것이 특징인 리튬 버퍼물질.
- LiCoO2와 리튬 버퍼물질이 균일하게 혼합된 혼합물을 제공하는 제 1 단계; 상기의 혼합물을 열처리하여 리튬 화학포텐셜의 평형상태를 만드는 제 2 단계;를 포함하는 LiCoO2 함유 분말의 제조방법.
- 제 17 항에 있어서, 상기 제 1 단계의 혼합물은 리튬 버퍼물질이 LiCoO2의 표면을 피복하는 코어쉘 형태인 것이 특징인 LiCoO2함유 분말의 제조방법.
- 제 17 항에 있어서, 상기 열처리 온도는 LiCoO2와 리튬 버퍼물질 간의 반응에 의해 새로운 화합물을 형성하지 않을 정도의 온도를 상한으로 하는 것이 특징인 LiCoO2 함유 분말의 제조방법.
- 제 17 항에 있어서, 상기 열처리 온도는 400℃ ~ 1100℃의 범위인 것이 특징인 LiCoO2 함유 분말의 제조방법.
- 제 1 항 내지 제 13 항 중 어느 한 항에 기재된 물질을 활물질로 포함하는 전극.
- 제 21 항의 전극을 구비한 이차전지.
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KR20060025116 | 2006-03-20 | ||
KR1020060025116 | 2006-03-20 | ||
KR20060040969 | 2006-05-08 | ||
KR1020060040969 | 2006-05-08 |
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KR1020080064130A Division KR20080066908A (ko) | 2006-03-20 | 2008-07-03 | 화학양론적 리튬 코발트 산화물 및 그 제조방법 |
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KR20070095200A true KR20070095200A (ko) | 2007-09-28 |
KR100875605B1 KR100875605B1 (ko) | 2008-12-24 |
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KR1020080064130A KR20080066908A (ko) | 2006-03-20 | 2008-07-03 | 화학양론적 리튬 코발트 산화물 및 그 제조방법 |
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US (3) | US7883644B2 (ko) |
EP (1) | EP1994587B1 (ko) |
JP (1) | JP5629460B2 (ko) |
KR (2) | KR100875605B1 (ko) |
CN (2) | CN102306768B (ko) |
TW (1) | TWI359110B (ko) |
WO (1) | WO2007108610A1 (ko) |
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WO2016053051A1 (ko) * | 2014-10-02 | 2016-04-07 | 주식회사 엘지화학 | 리튬 이차전지용 양극활물질, 이의 제조방법 및 이를 포함하는 리튬 이차전지 |
US9786903B2 (en) | 2014-10-02 | 2017-10-10 | Lg Chem, Ltd. | Positive electrode active material for lithium secondary battery, method of preparing the same and lithium secondary battery including the same |
US10270096B2 (en) | 2014-12-17 | 2019-04-23 | Samsung Sdi Co., Ltd. | Positive active material for rechargeable lithium battery, method of preparing same and rechargeable lithium battery including same |
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JP5544163B2 (ja) | 2006-03-20 | 2014-07-09 | エルジー・ケム・リミテッド | リチウム電池用高性能カソード材料 |
US9614220B2 (en) | 2007-01-29 | 2017-04-04 | Umicore | Doped and island-covered lithium cobaltite oxides |
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KR20130030660A (ko) * | 2011-09-19 | 2013-03-27 | 삼성전자주식회사 | 전극활물질, 그 제조방법 및 이를 채용한 전극 및 리튬전지 |
WO2013137509A1 (ko) | 2012-03-13 | 2013-09-19 | 주식회사 엘앤에프신소재 | 리튬 이차 전지용 양극 활물질의 제조 방법, 리튬 이차전지용 양극 활물질 및 리튬 이차전지 |
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CN104756300A (zh) | 2012-10-30 | 2015-07-01 | 三洋电机株式会社 | 非水电解质二次电池 |
TWI520422B (zh) * | 2012-11-26 | 2016-02-01 | 財團法人工業技術研究院 | 鋰電池電極粉體與鋰電池極板 |
JP2016504727A (ja) * | 2012-12-14 | 2016-02-12 | ユミコア | 充電式電池用の低空隙率電極 |
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US9246166B2 (en) | 2013-01-18 | 2016-01-26 | Samsung Sdi Co., Ltd. | Composite cathode active material, cathode and lithium battery including the composite cathode active material, and preparation method thereof |
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US9786903B2 (en) | 2014-10-02 | 2017-10-10 | Lg Chem, Ltd. | Positive electrode active material for lithium secondary battery, method of preparing the same and lithium secondary battery including the same |
US10270096B2 (en) | 2014-12-17 | 2019-04-23 | Samsung Sdi Co., Ltd. | Positive active material for rechargeable lithium battery, method of preparing same and rechargeable lithium battery including same |
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CN102306768A (zh) | 2012-01-04 |
US20140353548A1 (en) | 2014-12-04 |
EP1994587B1 (en) | 2018-07-11 |
US9564636B2 (en) | 2017-02-07 |
CN102306768B (zh) | 2015-04-15 |
CN104979547A (zh) | 2015-10-14 |
KR100875605B1 (ko) | 2008-12-24 |
US20110309290A1 (en) | 2011-12-22 |
JP2009530223A (ja) | 2009-08-27 |
TWI359110B (en) | 2012-03-01 |
EP1994587A1 (en) | 2008-11-26 |
US7883644B2 (en) | 2011-02-08 |
WO2007108610A1 (en) | 2007-09-27 |
EP1994587A4 (en) | 2010-12-22 |
US8932480B2 (en) | 2015-01-13 |
US20070218363A1 (en) | 2007-09-20 |
JP5629460B2 (ja) | 2014-11-19 |
CN104979547B (zh) | 2018-02-06 |
KR20080066908A (ko) | 2008-07-17 |
TW200800800A (en) | 2008-01-01 |
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