▎ 摘　　要

NOVELTY - Preparation of graphene, involves using chemical synthesis to react in a solvent medium to prepare a graphene precursor, anaerobically calcining the graphene precursor to obtain graphene. The reaction raw materials of the chemical synthesis are active metals and sugars. The active metal is alkali metal and/or alkaline earth metal. USE - Preparation of graphene. ADVANTAGE - The method has simple operation, is inexpensive, produces product with high yield. The produced graphene is post-treated to improve the purity.