▎ 摘　　要

NOVELTY - Preparing graphene, comprises adding graphite oxide in water and carrying out ultrasonic dispersion, and preparing graphene oxide suspension with concentration of 1-20 mg/ml, adding 30-50% chloride solution into the graphene oxide suspension, stirring to obtain chloride-graphene oxide mixed solution, filtering the mixed solution, screening and drying, and then adding into a muffle furnace, calcining at high temperature under inert atmosphere, cooling, water washing, filtering, and drying to obtain graphene. USE - The method is useful for preparing graphene (claimed). ADVANTAGE - Graphene is provided with high specific surface and high electrical conductivity. The method has simple preparation process, and can greatly reduce the production cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a graphene prepared according to the above mentioned method.