| 摘要 |
Provided is a production method for a positive electrode active material, capable of readily producing a positive electrode active material having excellent cycle characteristics even when same is a Li-rich positive electrode active material. The production method for positive electrode active materials has: a step in which at least one type of sulfate (A) selected from a group comprising a Ni sulfate, a Co sulfate, and a Mn sulfate, an Al sulfate, and at least one type of carbonate (B) selected from a group comprising sodium carbonate and potassium carbonate are mixed in an aqueous salutation state, and a co-precipitation compound including at least one type of transition metal element (X) selected from a group comprising Ni, Co, and Mn, and Al is obtained; and a step in which the co-precipitation compound and lithium carbonate are mixed, and baked at 500-1,000°C. |
