▎ 摘　　要

NOVELTY - The preparation method of porous graphene involves adding soluble metal salt to an aqueous solution of graphene oxide, uniformly mixing, stirring the mixture and then centrifuging, drying the mixture and then heat treating, and carrying out acid treatment. The soluble metal salt is nickel, cobalt, copper, iron or manganese. USE - The method is useful for preparation of porous graphene, which is useful in supercapacitor (claimed). ADVANTAGE - The method enables simple preparation of porous graphene with high yield. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) porous graphene prepared by the method; and (2) use of porous graphene in supercapacitor.