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公开(公告)号:US20110195303A1
公开(公告)日:2011-08-11
申请号:US13053579
申请日:2011-03-22
申请人: Sung Kyun CHANG , Hong-Kyu Park , Ho Suk Shin , Seung Tae Hong , Youngsun Choi
发明人: Sung Kyun CHANG , Hong-Kyu Park , Ho Suk Shin , Seung Tae Hong , Youngsun Choi
CPC分类号: H01M4/505 , C01G53/44 , C01P2002/20 , C01P2006/40 , H01M4/131 , H01M4/525 , H01M10/052
摘要: Disclosed herein is a cathode active material for a lithium secondary battery, in particular, including a lithium transition metal oxide with a layered crystalline structure in which the transition metal includes a transition metal mixture of Ni, Mn and Co, and an average oxidation number of all transition metals other than lithium is more than +3, and specific conditions represented by the following formulae (1) and (2), 1.1
摘要翻译: 本发明公开了一种用于锂二次电池的阴极活性材料,特别是包括具有层状结晶结构的锂过渡金属氧化物,其中过渡金属包括Ni,Mn和Co的过渡金属混合物,平均氧化数 除锂之外的所有过渡金属都大于+3,由下式(1)和(2)表示的具体条件,1.1
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公开(公告)号:US20110168944A1
公开(公告)日:2011-07-14
申请号:US12667357
申请日:2008-10-08
申请人: Sung Kyun Chang , Ho Suk Shin , Hong-Kyu Park
发明人: Sung Kyun Chang , Ho Suk Shin , Hong-Kyu Park
IPC分类号: H01M4/505
CPC分类号: C01G53/50 , C01P2002/52 , C01P2002/72 , C01P2002/77 , C01P2006/40 , H01M4/131 , H01M4/505 , H01M4/525 , H01M10/0525 , Y02T10/7011
摘要: Provided is a cathode active material for a lithium secondary battery, including a lithium-transition metal composite oxide represented by the following formula (1), which contains an excess of lithium, so as to exhibit enhanced rate characteristics under high rate charge/discharge conditions: Lii+aNi′bNi″cMndCoeO2 (1) wherein each of a, b, c, d and e has the same meaning as defined in the disclosure. The cathode active material according to the present invention includes an excess of lithium and, different from conventional technologies, a lithium-transition metal composite oxide containing a nickel element with a predetermined oxidation number, so that the active material exhibits a stable crystal structure and excellent rate characteristics under high rate charge/discharge conditions.
摘要翻译: 本发明提供一种锂二次电池用正极活性物质,其包含由下述式(1)表示的锂过渡金属复合氧化物,其含有过量的锂,以便在高速率充放电条件下表现出增强的速率特性 :Lii + aNi'bNi“cMndCoeO2(1)其中a,b,c,d和e各自具有与本公开中所定义相同的含义。 根据本发明的正极活性物质包含过量的锂,并且与常规技术不同,含有具有预定氧化数的镍元素的锂 - 过渡金属复合氧化物,使得活性材料表现出稳定的晶体结构和优异的 高速率充放电条件下的速率特性。
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公开(公告)号:US20110089367A1
公开(公告)日:2011-04-21
申请号:US12679210
申请日:2009-04-03
申请人: Ho Suk Shin , Sung Kyun Chang , Hong-Kyu Park , Sinyoung Park , Youngsun Choi , Seung Tae Hong , Hyo-Shik Kil
发明人: Ho Suk Shin , Sung Kyun Chang , Hong-Kyu Park , Sinyoung Park , Youngsun Choi , Seung Tae Hong , Hyo-Shik Kil
IPC分类号: H01M4/90
CPC分类号: C01G53/006 , C01G51/00 , C01G53/40 , C01G53/50 , C01P2006/40 , H01M4/525
摘要: Provided is a precursor for the preparation of a lithium transition metal oxide that is used for the preparation of a lithium transition metal oxide as a cathode active material for a lithium secondary battery, through a reaction with a lithium-containing compound, wherein the precursor contains two or more transition metals, and sulfate ion (SO4)-containing salt ions derived from a transition metal salt for the preparation of the precursor have a content of 0.1 to 0.7% by weight, based on the total weight of the precursor.
摘要翻译: 提供了用于制备锂过渡金属氧化物的前体,其用于通过与含锂化合物的反应制备锂过渡金属氧化物作为锂二次电池的正极活性材料,其中前体包含 基于前体的总重量,由用于制备前体的过渡金属盐衍生的两种或更多种过渡金属和含硫酸根离子(SO 4)的盐离子的含量为0.1至0.7重量%。
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