▎ 摘　　要

NOVELTY - Preparation of graphene-silicon nanopowder composite material involves preparing graphene microsheet, surface-modifying the graphene microsheet, mixing surface-modified graphene microsheet with silicon nanogranules to obtain graphene-silicon mixed material, and processing the mixed material. USE - Preparation of graphene-silicon nanopowder composite material (claimed). ADVANTAGE - The graphene-silicon nanopowder composite material having favorable conductivity is economically prepared by simple and environmentally-friendly method with reduced usage amount of acid and oxidant.