▎ 摘　　要

NOVELTY - Preparing graphene involves uniformly coating tar nickel foil surface to obtain sample, coating sample with tar-face upwards which is placed in reaction furnace, and filling protective gas in reaction furnace and sealing. The sample is subjected to high temperature treatment in reaction furnace atmosphere, and cooled to obtain graphene. USE - Method for preparing graphene. ADVANTAGE - The method enables to prepare graphene that reduces the production cost of the graphene, and achieves high-value utilization of tar.