▎ 摘　　要

NOVELTY - Preparing graphene comprises e.g. (i) mixing stripping auxiliary agent with organic solvent to obtain stripping auxiliary agent solution or dispersion, where stripping auxiliary agent is biphenyl and their derivatives and azobenzene, (ii) adding natural graphite powder into stripping auxiliary agent solution or dispersion obtained in step (i) to obtain graphite suspension or wet stripping auxiliary agent, and (iii) placing graphite suspension or wet stripping auxiliary agent obtained in step (ii) in ultrasonic generator, high-speed stirrer or shearing equipment to obtain graphene. USE - The method is useful for preparing graphene. ADVANTAGE - The graphene has high yield and low oxygen content; and maintains the original thermal and electrical conductivity properties. DETAILED DESCRIPTION - Preparing graphene comprises (i) mixing stripping auxiliary agent with organic solvent to obtain stripping auxiliary agent solution or dispersion, where stripping auxiliary agent is biphenyl and their derivatives, azobenzene and their derivatives, liquid crystal polymer containing benzene ring nucleation unit and their synthetic resin and/or liquid crystalline polymer containing aromatic heterocyclic nucleation unit and their synthetic resin, (ii) adding natural graphite powder into stripping auxiliary agent solution or dispersion obtained in step (i) to obtain graphite suspension or wet stripping auxiliary agent, and (iii) placing graphite suspension or wet stripping auxiliary agent obtained in step (ii) in ultrasonic generator, high-speed stirrer or shearing equipment to obtain graphene. An INDEPENDENT CLAIM is also included for graphene is obtained by above method.