▎ 摘　　要

NOVELTY - Producing graphene, comprises: (a) mixing expanded graphite in a liquid to provide a mixture; and (b) exfoliating the expanded graphite by exposing the mixture to a high shear mixing assembly to produce graphene. USE - The method is useful for producing graphene used in coating (claimed) or composite. ADVANTAGE - The method: provides graphene, i.e. expanded graphite is defect-free or substantially defect-free in high yields; provides expanded graphite particles have a large lateral size and in order to improve exfoliation process efficiencies (reduced energy consumption and increased exfoliation rate), the particle size is reduced; provides significant increases in yield of few-layer graphene are obtainable by subjecting expanded graphite to a high shear mixing treatment and can be produced at low cost; and is low-cost and scalable for producing few-layer graphene with no or few defects.