Cathode active material for lithium secondary battery
    2.
    发明授权
    Cathode active material for lithium secondary battery 有权
    锂二次电池用阴极活性物质

    公开(公告)号:US08277980B2

    公开(公告)日:2012-10-02

    申请号:US12833518

    申请日:2010-07-09

    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 。

    CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY
    3.
    发明申请
    CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY 有权
    用于锂二次电池的阴极活性材料

    公开(公告)号:US20110140036A1

    公开(公告)日:2011-06-16

    申请号:US12833518

    申请日:2010-07-09

    IPC分类号: H01M4/86 C01G53/04

    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 。