▎ 摘　　要

NOVELTY - Preparation of multilayer graphene comprises dissolving carboxymethyl cellulose and polyethylene glycol in deionized water, and stirring to obtain dispersant clear solution; cooling at room temperature with stirring, and adding expanded graphite to obtain suspension; and grinding suspension into nano-grinding machine to obtained multi-graphene. USE - Method for preparing multilayer graphene (claimed). ADVANTAGE - The method is simple, environment-friendly, non-toxic and low-cost. It maintains crystal integrity of graphene.