▎ 摘　　要

NOVELTY - A graphene with adjustable surface microhole size is prepared by preparing micro-grinding medium with micro-nano level angled surface, mixing with graphite raw materials to obtain mixture A, low speed ball milling into ball milling tank to obtain mixture B, sieving to obtain microspheres coated with graphene, solvent ultrasonicaly processing to obtain mixed solution, and filtering. USE - The method is used for graphene with adjustable surface microhole size preparation. ADVANTAGE - The product has more excellent physical and chemical properties, and contains low impurity functional group. The method is safe and suitable for industrial production, has simple process, good product quality, low cost, short whole production period, high production efficiency and physical reaction and chemical reaction, uses milling device, and avoids the use of strong alkali and oxidant.