▎ 摘　　要

NOVELTY - Preparation graphene material, involves (i) mixing graphite and grinding aids, uniformly dispersing the graphite in the grinding aids and obtaining mixed raw material, (ii) transferring the mixed raw materials into a solid phase chemical reactor and milling to obtain graphene/grinding aids composites, and (iii) removing the grinding aids from the graphite/grinding aids composites. USE - Preparation graphene material (claimed). ADVANTAGE - The graphene material is prepared by a simple method with high efficiency and clean and at low cost. The method provides less substrate defects of graphene, and realizes surface functionalization of graphene.