▎ 摘　　要

NOVELTY - Lithium ion battery composite cathode material comprises the mixed material, the first cladding layer and the second cladding layer is orderly covered the mixed material, the mixed material is a silicone-based material, graphene and graphite material, the mass ratio of silicon-based material and graphite is 1:(1-10), the mass ratio of the graphite and the graphene is 100: (0.01-5), the first covering layer is polyaniline. The second covering layer is polypyrrole. USE - Used as lithium ion battery composite cathode material. ADVANTAGE - The material has: excellent circulation performance; saves energy consumption; easy operation and industrialization and is prepared by simple process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing lithium ion battery composite cathode material comprising (1) taking the graphene, dispersing in the distilled water, adding graphite, stirring, adding silicon base material, stirring them to form mixed material, the ratio of silicon-based material and graphite is 1:(1-10), the mass ratio of the graphite and the graphene is 100: (0.01-5), (2) taking mixed solution of aniline monomer and hydrochloric acid solution into the mixed material, stirring and adding the mixed solution of ammonium sulfate and hydrochloric acid solution, reacting to obtain primary mixture liquid containing first coating polyaniline, (3) taking primary mixing liquid and mixed solution of pyrrole monomer and hydrochloric acid solution, stirring and adding the mixed solution of ammonium sulfate and hydrochloric acid solution, reacting for certain time to obtain the final mixed liquid containing second coating of polypyrrole, and (4) using the final mixed solution prepared in step (3) and filtering the product, washing and drying, to obtain the product.