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公开(公告)号:US09786911B2
公开(公告)日:2017-10-10
申请号:US13529430
申请日:2012-06-21
申请人: Sung-Kyun Chang , Hong Kyu Park , Sin Young Park , Jin-hyung Lim , DongHun Lee
发明人: Sung-Kyun Chang , Hong Kyu Park , Sin Young Park , Jin-hyung Lim , DongHun Lee
IPC分类号: H01M4/485 , H01M4/36 , H01M4/48 , H01M4/505 , H01M4/525 , H01M4/58 , H01M10/052 , H01M10/0525 , C01G53/04 , C01G53/00
CPC分类号: H01M4/485 , C01G53/50 , H01M4/364 , H01M4/48 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M10/052 , H01M10/0525 , H01M2220/20 , Y02E60/122 , Y02T10/7011
摘要: Disclosed is a cathode active material for secondary batteries comprising at least one compound selected from the following formula 1: (1−s−t)[Li(LiaMn(1−a−x−y)NixCoy)O2]*s[Li2CO3]*t[LiOH] (1) wherein 0
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公开(公告)号:US08277980B2
公开(公告)日:2012-10-02
申请号:US12833518
申请日:2010-07-09
申请人: Sung kyun Chang , Hong-Kyu Park , Hyo-shik Kil , Jin-hyung Lim
发明人: Sung kyun Chang , Hong-Kyu Park , Hyo-shik Kil , Jin-hyung Lim
CPC分类号: H01M4/505 , C01G53/04 , C01P2002/72 , C01P2006/40 , H01M4/525
摘要: Provided is a cathode active material which is lithium transition metal oxide having an α-NaFeO2 layered crystal structure, wherein the transition metal is a blend of Ni and Mn, an average oxidation number of the transition metals except lithium is +3 or higher, and lithium transition metal oxide satisfies the Equation m(Ni)≧m(Mn) (in which m (Ni) and m (Mn) represent an molar number of manganese and nickel, respectively). The lithium transition metal oxide has a uniform and stable layered structure through control of oxidation number of transition metals to a level higher than +3, thus advantageously exerting improved overall electrochemical properties including electric capacity, in particular, superior high-rate charge/discharge characteristics.
摘要翻译: 本发明提供一种正极活性物质,其为具有α-NaFeO 2层状结晶结构的锂过渡金属氧化物,其中,过渡金属为Ni和Mn的混合物,除锂以外的过渡金属的平均氧化数为+3以上, 锂过渡金属氧化物满足方程m(Ni)≥m(Mn)(其中m(Ni)和m(Mn)分别表示锰和镍的摩尔数)。 锂过渡金属氧化物通过将过渡金属的氧化数控制到高于+ 3的水平,具有均匀且稳定的层状结构,因此有利地实现包括电容在内的改进的整体电化学性质,特别是优异的高速率充电/放电特性 。
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公开(公告)号:US20110140036A1
公开(公告)日:2011-06-16
申请号:US12833518
申请日:2010-07-09
申请人: Sung kyun CHANG , Hong-Kyu Park , Hyo-Shik Kil , Jin-hyung Lim
发明人: Sung kyun CHANG , Hong-Kyu Park , Hyo-Shik Kil , Jin-hyung Lim
CPC分类号: H01M4/505 , C01G53/04 , C01P2002/72 , C01P2006/40 , H01M4/525
摘要: Provided is a cathode active material which is lithium transition metal oxide having an α-NaFeO2 layered crystal structure, wherein the transition metal is a blend of Ni and Mn, an average oxidation number of the transition metals except lithium is +3 or higher, and lithium transition metal oxide satisfies the Equation m(Ni)≧m(Mn) (in which m (Ni) and m (Mn) represent an molar number of manganese and nickel, respectively). The lithium transition metal oxide has a uniform and stable layered structure through control of oxidation number of transition metals to a level higher than +3, thus advantageously exerting improved overall electrochemical properties including electric capacity, in particular, superior high-rate charge/discharge characteristics.
摘要翻译: 本发明提供一种正极活性物质,其为具有α-NaFeO 2层状结晶结构的锂过渡金属氧化物,其中,过渡金属为Ni和Mn的混合物,除锂以外的过渡金属的平均氧化数为+3以上, 锂过渡金属氧化物满足方程m(Ni)≥m(Mn)(其中m(Ni)和m(Mn)分别表示锰和镍的摩尔数)。 锂过渡金属氧化物通过将过渡金属的氧化数控制到高于+ 3的水平,具有均匀且稳定的层状结构,因此有利地实现包括电容在内的改进的整体电化学性质,特别是优异的高速率充电/放电特性 。
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