▎ 摘　　要

NOVELTY - Preparation of high specific capacity nitrogen-doped graphene nickel cobalt lithium manganese composite material comprises preparing graphene oxide by Hummers method, mixing with lithium nickel manganese cobalt oxide ternary material, ultrasonically treating, freeze drying to obtain composite material, nitrogen doping by plasma method, and obtaining the product. USE - Preparation of high specific capacity nitrogen-doped graphene nickel cobalt lithium manganese composite material (claimed). ADVANTAGE - The method is simple and easy, and provides high specific capacity nitrogen-doped graphene nickel cobalt lithium manganese composite material, which has increased conductivity, and provides battery with specific capacity of 200 mAhour/g and greatly improved cycle stability.