▎ 摘　　要

NOVELTY - The preparation method of porous graphene involves mixing carbon source with sheet-like template agent to obtain carbon source-template agent compound coated on surface of the sheet-like template agent with carbon source, carbonizing the carbon source-template agent compound at 500-900 degrees C under the protection of inert gas atmosphere to obtain carbonized product, acid-washing and purifying the carbonized product to obtain flaky porous carbon, and calcining the flaky porous carbon at 1000-2000 degrees C for 1-24 hours under an inert gas atmosphere. USE - Preparation method of porous graphene used as cathode material of lithium ion battery and electrode material of supercapacitor. ADVANTAGE - The method enables preparation of porous graphene with high quality and excellent electrochemical property, by economical process.