導電性複合粒子、正極活物質及びそれを用いた二次電池

摘要

PROBLEM TO BE SOLVED: To provide a positive electrode active material containing an olivine type silicate compound having a high conductivity; and a secondary battery arranged by use thereof.SOLUTION: A conductive composite particle comprises (A) an olivine type silicate compound, and (B) graphene in the mass proportion (A:B) of 99:1 to 93:7, and has a particle diameter of 5-30μm.