▎ 摘　　要

NOVELTY - Preparing electrode involves forming nanoporous graphene layer on flexible carbon-based substrate layer having graphenes interconnected by three-dimensional network and pores forming successive channels, where formation of the nanoporous graphene layer includes preparing nanoporous graphene powder, collecting the nanoporous graphene powder to form a nanoporous graphene layer having a three-dimensional network structure, transferring the nanoporous graphene layer onto the flexible carbon-based substrate layer. USE - Method for preparing electrode. ADVANTAGE - The method enables to prepare electrode in simplemanner, and which has high flexibility. DETAILED DESCRIPTION - Preparing electrode involves forming nanoporous graphene layer on flexible carbon-based substrate layer having graphenes interconnected by three-dimensional network and pores forming successive channels, where formation of the nanoporous graphene layer includes preparing nanoporous graphene powder, collecting the nanoporous graphene powder to form a nanoporous graphene layer having a three-dimensional network structure, transferring the nanoporous graphene layer onto the flexible carbon-based substrate layer, dispersing the nano-porous graphene powder in a polar organic solvent to obtain dispersion, adding water to the dispersion to prepare a mixed solution, and adding an organic solvent capable of generating rayleigh-benard convection to the mixed solution to induced an interfacial assembly to obtain final product.