▎ 摘　　要

NOVELTY - Preparing porous graphene lithium cobalt composite material, comprises (a) preparing aqueous solution of porous graphene; (b) adding lithium cobalt to the aqueous solution of porous graphene; and (c) uniformly mixing, and spray drying to obtain the composite material. USE - The method to produce composite material is useful in cathode of lithium ion battery (all claimed). ADVANTAGE - The method provides continuous three-dimensional electrically-conductive structure composite material, and can coat porous graphene on surface of lithium cobaltate. The porous graphene lithium cobalt composite material forms bridge connection between the lithium cobaltate. DETAILED DESCRIPTION - INDEPENDENT claims are also included for: (1) porous graphene lithium cobalt composite material prepared by the above method; and (2) lithium ion battery, comprising binder, conductive agent and porous graphene lithium cobalt composite material.