▎ 摘　　要

NOVELTY - Lithium ion battery carbon cathode material of similar graphene structure is prepared by thermally treating micro-ring acrylonitrile low polymer solution at 200-300 degrees C for 1-20 hours; grinding, sieving and drying the polymer at room temperature to obtain thermally oxidized precursor; and roasting the precursor under the protection of inert atmosphere. USE - Method for preparing lithium ion battery carbon cathode material of similar graphene structure (claimed). ADVANTAGE - The method has simple technique, low needed carbonization temperature, low cost, high output, and good performance. The obtained lithium ion battery carbon cathode material has high conductivity, high specific capacity, greatly improved circulating performance and special composite structure that has better performance. DETAILED DESCRIPTION - Preparation of lithium ion battery carbon cathode material of similar graphene structure comprises blending diluted polymer solution containing acrylonitrile at 80-200 degrees C for 8-72 hours to form the polymer solution; thermally treating the polymer solution at 200-300 degrees C for 1-20 hours to form thermally oxidized polyacrylonitrile polymer with gradient structure; grinding, sieving and drying the polymer at room temperature to obtain thermally oxidized precursor; and roasting the precursor at 500-1800 degrees C for 6-24 hours under the protection of inert atmosphere. The thermally oxidized precursor is lithium ion battery carbon cathode material which is carbonized to form multiple structures which can be similar graphene structure carbon, graphite, amorphous carbon, carbon nano pipe, pyrolytic carbon and carbon composition.