▎ 摘　　要

NOVELTY - Preparing big sheet graphene comprises taking graphene intercalation compound as raw material, reacting intercalation agent and reagent with graphene intercalation compound layer under turbulent condition to obtain gas, then cutting force and stripping of graphene platelet graphene intercalation compound to obtain large graphene sheet. USE - The method is useful for preparing big sheet graphene (claimed). ADVANTAGE - The method combines physical stripping and chemical stripping for simultaneously performing process of sheet size of 1-50 mu m and large graphene sheet thickness of 1-8 atomic layers; and the graphene has yield less than ten layers of nearly 100%, simple preparation method, mild reaction condition and low cost, and is easy to control and is suitable for industrialization.