▎ 摘　　要

NOVELTY - A graphene electrode preparing method involves allowing graphene derivative solution for reduction treatment to obtain graphene hydrogel. The graphene hydrogel is immersed in salt solution, removed and dried to give graphene composite salt component. The graphene composite salt component is placed under anoxic atmosphere or a reducing atmosphere, heated, removed, washed with cleaning solvent to give three-dimensional graphene block body material. The graphene block body material is subjected for cutting with a diameter of d, thickness of h and density of rho to obtain the finished product. USE - Method for preparing graphene electrode. ADVANTAGE - The method enables preparing graphene electrode with high density and thickness and high purity. DETAILED DESCRIPTION - A graphene electrode preparing method involves allowing graphene derivative solution for reduction treatment to obtain graphene hydrogel having three-dimensional structure. The graphene hydrogel is immersed in salt solution in concentration of c for t hours, removed and dried to give graphene composite salt component. The graphene composite salt component is placed under anoxic atmosphere or a reducing atmosphere, heated at a temperature of T1, removed, washed with cleaning solvent repeatedly to give three-dimensional graphene block body material. The three-dimensional graphene block body material is subjected for cutting with a diameter of d, thickness of h and density of rho to obtain the finished product.