▎ 摘　　要

NOVELTY - Preparation of fluorinated graphene involves (a) fluorinating graphene with fluorinating agent (1) under the protection of inert gas at 150-550 degrees C for 2-20 hours to obtain the crude product of graphene and (b) fluorinating crude graphene with fluorinating agent (2) under the protection of inert gas at 150-400 degrees C for 2-10 hours to obtain fluorinated graphene. The graphene is chosen from graphene powder and graphene film. The fluorinating agent (1) is fluorine gas. The fluorinating agent (2) is gas phase fluoride. USE - Preparation of fluorinated graphene (claimed). ADVANTAGE - The method prepares high fluorine content of fluorinated graphene with low density defect, and fluorine content is close to the theoretical value level.