▎ 摘　　要

NOVELTY - Preparation of graphene material involves dispersing graphene material in solvent to obtain graphene material dispersion, semi-fixing screens of different aperture sizes in the container, sequentially arranging sieve with respect to the aperture size from large to small, filling container and layers of the sieve with solvent, and adding graphene material dispersion to uppermost sieve with largest pore size for dialysis. USE - Preparation of graphene material. ADVANTAGE - The method enables simple, efficient and environmentally-friendly preparation of graphene material.