▎ 摘　　要

NOVELTY - Graphene is prepared by mechanical peeling method, and the number of graphene layers is less than 10 layers and the ratio is not less than 40%. USE - Graphene used in sensor, electronic component and biomedicine, and preparation of graphite is also a hot research topic. ADVANTAGE - The graphene has micron-scale sheet diameter. The method efficiently prepare high quality of graphene by controlling graphite cutting ways. The method is simple and shortens the reaction time, and reduces the abrasion of the graphite. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene, which involves: (1) crushing graphite powder and an organic solvent in a kettle 1; (2) grinding the product in a kettle 2.