▎ 摘 要
NOVELTY - Preparation of graphene comprises taking graphitized spiral carbon fiber as raw material and subjecting to modified Hummers method to prepare graphene with controllable number of layers. USE - Preparation of graphene (claimed) used in energy sources such as lithium cells and solar cells. ADVANTAGE - The method is suitable for large-scale implementation and simple, provides graphene with controllable number of layers, has high yield and provides good product performance.