▎ 摘　　要

NOVELTY - The preparation method of nickel-graphene composite lithium battery material involves (1) adding graphene oxide to deionized water, and ultrasonically dispersing for 1-2 hours to obtain graphene oxide suspension with concentration of 0.5-1.5 mg/mL, (2) adding nickel nitrate solution to the graphene oxide suspension, uniformly stirring, adding mixed lye while stirring, controlling the reaction temperature of the water bath at 50-60 degrees C, where the dripping speed of the mixed lye is 1-2 drops per second, and leaving still after finishing the reaction to obtain mixture containing nickel hydroxide, (3) taking the obtained mixture containing nickel hydroxide as a crystal seed, continuously dripping the mixed lye, stopping the reaction when the particle size of the nickel hydroxide reaches the requirement, vacuum filtering, washing with deionized water and absolute ethyl alcohol until neutral, and vacuum drying. USE - Preparation method of nickel-graphene composite lithium battery material. ADVANTAGE - The method enables preparation of nickel-graphene composite lithium battery material with fast reaction speed, uniform heating, short crystallization time, and high yield. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for nickel-graphene composite lithium battery material, which comprises nickel hydroxide and graphene in a mass ratio of (5-10):1.