| abstract |
【Task】 Provided are a positive electrode active material for a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery having excellent battery characteristics, particularly excellent high-temperature characteristics. [Solution] The positive electrode active material for a nonaqueous electrolyte secondary battery is a positive electrode active material for a nonaqueous electrolyte secondary battery comprising a powder body and a powder having a coating layer covering at least a part of the surface of the powder body, The powder body has a layered structure lithium transition metal composite oxide, and the coating layer has manganese oxide in at least a part of the spinel structure lithium transition metal composite oxide. [Selection figure] None |