POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE FOR ELECTRIC DEVICE, AND ELECTRIC DEVICE

摘要

[Summary] A positive electrode active material is provided to contain: a solid solution lithium-containing transition metal oxide (A) represented by Li 1.5 [NiaCo b Mn c [Li] d ]O 3 (where a, b, c and d satisfy the relations of 0.1‰¤d‰¤0.4, a+b+c+d=1.5, and 1.1‰¤a+b+c‰¤1.4.); and a lithium-containing transition metal oxide (B) represented by Li 1.0 Ni a' CO b' Mn c' O 2 (where a', b' and c' satisfy the relation of a'+b'+c'=1.0.).