▎ 摘　　要

NOVELTY - Three-dimensional porous layer graphene preparation involves mixing basic copper carbonate and poly(methyl methacrylate) acetone solution uniformly, and then drying to obtain basic copper carbonate mixture. The obtained basic copper carbonate mixture is heated in hydrogen and inert gas atmosphere to give a mixture of copper and poly(methyl methacrylate). The obtained mixture is heated at 500-1000 degrees C in hydrogen and inert gas atmosphere to grow graphene. The resulting graphene is naturally cooled at room temperature for removing copper oxide graphene sample. USE - Method for preparing three-dimensional porous layer graphene for high-performance super capacitor (claimed). ADVANTAGE - The method prepares the three-dimensional porous layer graphene in a simple manner with large surface area, high conductivity, excellent wettability, high energy density, high power density and excellent cycle stability. DETAILED DESCRIPTION - Three-dimensional porous layer graphene preparation involves mixing basic copper carbonate and poly(methyl methacrylate) acetone solution uniformly, and then drying to obtain basic copper carbonate mixture. The obtained basic copper carbonate mixture is heated in hydrogen and inert gas atmosphere to give a mixture of copper and poly(methyl methacrylate). The obtained mixture is heated at 500-1000 degrees C in hydrogen and inert gas atmosphere to grow graphene. The resulting graphene is naturally cooled at room temperature for removing copper oxide graphene sample. The obtained copper oxide graphene sample is dipped in an etching solution to remove copper template, and then washed with water and dried to give the finished product. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic scanning electron micrograph of the three-dimensional porous layer graphene.