▎ 摘　　要

NOVELTY - A raw material comprises 85-95 pts. wt. cellulose, and 5-15 pts. wt. lignin. USE - The raw material is useful for preparing graphene (claimed). ADVANTAGE - The method enables simple, economical and large-scale industrial preparation of graphene using the raw material with stability and dispersibility in an environmentally-friendly manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene, which involves carrying out high-temperature roasting of the raw material, and then treating with 1-5 pts. wt. pore-forming agent.