POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES, POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION CELL, AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES

摘要

[Problem] The conventional positive electrode active material-graphene composite particle-containing positive electrode material for a lithium ion battery has low ionic conductivity of the graphene material, and thus satisfactory battery performance cannot be obtained. [Solutions] The positive electrode active material-graphene composite particles in the present invention have high electronic conductivity and ionic conductivity by compounding an appropriately functionalized graphene and a positive electrode active material, and when used as a positive electrode active material for lithium ion batteries, high capacity A lithium ion secondary battery with high output can be obtained.