Active material of positive electrode for nonaqueous electrolyte secondary battery and process for producing the same

摘要

A positive electrode active material for a non-aqueous electrolyte secondary battery includes a particle of a composite oxide which contains Li and Co, wherein: the composite oxide further contains an element M¹ and an element M²; the element M¹ is at least one selected from the group consisting of Mg, Cu and Zn; the element M² is at least one selected from the group consisting of Al, Ca, Ba, Sr, Y and Zr; the element M¹ is uniformly distributed in the particle; and the element M² is distributed in the surface portion of the particle more than in the inside thereof.