▎ 摘　　要

NOVELTY - -Preparing graphene involves mixing graphite and liquid-phase medium and mechanically peeled off to obtained mixture which contained graphite and graphene, then mixture of graphite and graphene is centrifugal separated and collected supernatant of graphene. USE - Method for preparing graphene (claimed). ADVANTAGE - The method enables to prepare graphene is easy to prepare, cost-effective, has good conductivity which reaches 40000 siemens/meter, not damage graphene structure, better maintains integrity of graphene sheet and high Sp2 hybrid degree.