▎ 摘　　要

NOVELTY - A modified graphite material is prepared by orderly performing heat treatment and graphitization to graphite raw material to obtain graphite particles, first fusing graphite particles and oily graphene slurry, performing first carbonization to obtain primary coating graphite particles, second fusing primary coating graphite particles and polyvinylpyrrolidone aqueous solution, and performing second carbonization. USE - The method is used for preparing modified graphite material as cathode material in lithium ion battery (claimed). ADVANTAGE - The battery has high discharge capacity, excellent multiplying power performance and impedance performance.