▎ 摘　　要

NOVELTY - Preparation of graphene comprises adding graphite particles and electrolyte into mixer, stirring, putting into magnetic field, and agitating to obtain millimeter graphene particles; putting into magnetic field, rotating to create potential difference, and combining electrolyte ion with graphene to obtain graphene and electrolyte mixture; centrifuging, removing agglomerated graphene, precipitating, and collecting suspension; and filtering, washing, drying, and calcining. USE - Method for preparing graphene (claimed). ADVANTAGE - The method is simple and suitable for industrial production, improves high area ratio and purity and production efficiency of graphene, and reduces production cost.