| abstract |
Disclosed is a method for easily mass-producing a positive electrode active material having rate characteristics suitable for nonaqueous electrolyte batteries, especially suitable for nonaqueous electrolyte secondary batteries. Also disclosed is a high-performance nonaqueous electrolyte battery having a positive electrode active material obtained by such a method. Specifically disclosed is a method for producing a positive electrode active material, which comprises a step wherein lithium manganese phosphate LiMnPO4 or a compound LiMn1-xMxPO4 (wherein 0 ≤ x < 1 and M represents at least one metal element selected from the group consisting of Co, Ni, Fe, Zn, Cu, Ti, Sn, Zr, V and Al) containing manganese phosphate LiMnPO4 as a solid solution composition is mixed with a carbon source, and the resulting mixture is subjected to a heat treatment in an inert gas atmosphere. Also specifically disclosed is a nonaqueous electrolyte battery which has a positive electrode containing such a positive electrode active material. |