POSITIVE ELECTRODE ACTIVE MATERIAL GRANULAR POWDER AND METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
    2.
    发明公开
    POSITIVE ELECTRODE ACTIVE MATERIAL GRANULAR POWDER AND METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY 有权
    粒状粉末作为正极活性物质,工艺用于生产和二次电池的非水电解质

    公开(公告)号:EP2693535A1

    公开(公告)日:2014-02-05

    申请号:EP12763014.3

    申请日:2012-03-22

    IPC分类号: H01M4/505 C01G53/00 H01M4/525

    摘要: The present invention provides positive electrode active substance particles which are improved in charge/discharge capacities, cycle characteristics and thermal stability. The positive electrode active substance particles according to the present invention comprise a compound having at least a crystal system belonging to a space group of R-3m and a crystal system belonging to a space group of C2/m and having a specific peak intensity ratio, in which a content of Mn in the compound is controlled such that a molar ratio of Mn/(Ni + Co + Mn) therein is not less than 0.55; a content of boron in the compound is 0.01 to 1% by weight; a content of fluorine in the compound is 0.01 to 5% by weight; and a content of an element A (at least one element selected from the group consisting of Al, Mg, Ti, Zr, Ca, Fe, Zn, Mo and Bi) in the compound is 0.004 to 9% by weight, and can be produced by calcining a mixture comprising precursor particles comprising Mn and Ni and/or Co, a lithium compound, a boron compound, a fluorine compound and a compound of the element A.

    摘要翻译: 本发明提供作为在充电/放电容量,循环特性和热稳定性改进的正极活性物质粒子。 另外,正极活性物质粒子雅丁到,本发明包含具有化合物至少属于空间群R-3m的和属于空间群C2 / m的晶体系统和具有特定峰强度比的晶系, 中的Mn的化合物中的一个内容被控制搜索那样的Mn /(镍+钴+ Mn)的摩尔比。其中不小于0:55少; 硼的化合物的含量为0时01〜1重量%; 按重量计的氟化合物中的含量为0时01%至5%; 和元素A的化合物(选自铝,镁,钛,锆,钙,铁,锌,钼和铋由......组成中选择的至少一种元素)的含量为0.004%至9%(重量),并且可以是 通过煅烧包含含有Mn和Ni和/或Co,锂化合物,硼化合物,氟化合物和元素A的化合物的前体颗粒的混合物生产