▎ 摘　　要

NOVELTY - Preparing porous graphene electrode materials by pyrolysis activation of mulberry charcoal, comprises (i) collecting mulberry stem, carrying out high temperature carbonization, crushing to obtain the primary mulberry stem charcoal crushed powder below 3 mm of solid particle size; (ii) crushing the primary mulberry charcoal crushing powder into ultrafine charcoal powder with a particle size of D50 above 1500 mesh and (iii) adding ultrafine carbon powder into the chemical activator for impregnation, mixing, stirring, and the activation time is 1 hour, mixing obtained chemical activation mixture with the physical activation gas and obtaining porous graphene electrode material by cooling under the protection of inert gas. USE - The method is useful for preparing porous graphene electrode materials by pyrolysis activation of mulberry charcoal. ADVANTAGE - The porous graphene electrode material has rich raw material, high carbon content, simple technique, green and environment-friendly, low cost, high comprehensive utilization rate, suitable for industrial scale production, and exhibits a higher power energy density and electric energy storage capacity.