POSITIVE ELECTRODE ACTIVE MATERIALS FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES

Abstract

POSITIVE ELECTRODE ACTIVE MATERIALS FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES Provided is a positive electrode active material that contributes to increasing the durability of a non-aqueous electrolyte secondary battery. This positive electrode active material included in the non-aqueous electrolyte secondary battery includes a lithium transition metal composite oxide, wherein: said lithium transition metal composite oxide contains Ni, Ca, and Sr, and contains secondary particles formed by the aggregation of primary particles, the attached particles including fibrous particles are present on the surface of the secondary particles, and said fibrous particles contain at least one of Ca and Sr.