▎ 摘　　要

NOVELTY - Preparation of graphene/carbon black composite material, involves ultrasonically dispersing oxidized graphene solution and carbon black, to obtain graphene and carbon black composite solution, adding reducing agent to graphene and carbon black composite solution to obtain graphene/carbon black composite material. USE - Preparation of graphene/carbon black composite material (claimed). ADVANTAGE - The graphene material dispersion is even, and the performance of carbon black is improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for production of graphene/carbon black composite material, which involves ultrasonically dispersing carbon black and solvent, to obtain carbon black solution, adding carbon black solution to aqueous solution of graphene oxide under the condition of ultrasonic, to obtain composite solution of graphene and carbon black.