利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN105229829A 含有固溶体活性物质的正极活性物质、含有该正极活性物质的正极及使用了该正极的非水电解质二次电池 失效 - 权利终止

含有固溶体活性物质的正极活性物质、含有该正极活性物质的正极及使用了该正极的非水电解质二次电池
摘要：
本发明提供一种非水电解质二次电池用正极活性物质，其中，可以抑制过渡金属、特别是锰的溶出。根据本发明，提供一种非水电解质二次电池用正极活性物质，具有：组成式(1)表示的固溶体活性物质，[数1]Li1.5[NiaMnbCoc[Li]d[X]e]Oz(1)，在此，X为Ti、Zr及Nb中的至少1种，0≤e≤0.5，a+b+c+d+e＝1.5，0.1≤d≤0.4，1.1≤[a+b+c+e]≤1.4，z为满足原子价的氧原子数；在上述固溶体活性物质的表面上存在氧化铝层，并且在该固溶体活性物质和氧化铝层的界面的该固溶体活性物质侧具有存在Al元素的区域。
摘要（英）：

The present invention provide a means which is capable of suppressing dissolution of a transition metal, especially dissolution of manganese from a positive electrode active material for nonaqueous electrolyte secondary batteries. The present invention provides a positive electrode active material for nonaqueous electrolyte secondary batteries, which comprises a solid solution active material represented by composition formula (1), and which has an alumina layer on the surface of the solid solution active material, while having a region, in which Al element is present, on the solid solution active material side of the interface between the solid solution active material and the alumina layer. Li1.5[NiaMnbCoc[Li]d[X]e]Oz (1) In this formula, X represents at least one element selected from among Ti, Zr and Nb; 0 <= e <= 0.5; a + b + c + d + e = 1.5; 0.1 <= d <= 0.4; 1.1 <= [a + b + c + e] <= 1.4; and z represents a number of oxygen atoms satisfying the atomic valence.

公开/授权文献
0/0