▎ 摘　　要

NOVELTY - Preparing graphene comprises: (i) heating and stripping the expandable graphite to obtain vermiform graphite; (ii) adding the vermiform graphite to a solvent to obtain vermiform graphite suspension; and (iii) performing ultrasonic dispersion and centrifugation on vermiform graphite suspension, washing and drying. USE - The method is useful for preparing graphene. ADVANTAGE - The method has easy operation, is economical and suitable for industrial production. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the steps involved in the preparation of graphene (Drawing includes non-English language text).