▎ 摘　　要

NOVELTY - Formation of a graphene-based material involves treating a mixture comprising an etchant and graphene oxide sheets to yield formation of holey graphene oxide sheets, dispersing the holey graphene oxide sheets in a re-dispersal solvent to form a holey graphene oxide dispersion comprising the holey graphene oxide sheets and treating the holey graphene oxide dispersion under reducing condition to form self-assembled holey graphene oxide sheets into a graphene-based material. USE - Formation of graphene-based material used as electrode material in supercapacitors. Uses include but are not limited to pseudo-capacitive material, high energy density supercapacitors, nanoscale battery, high power density batteries and high efficient fuel cells or air batteries. ADVANTAGE - The method provides graphene-based material with excellent mechanical flexibility, large specific area, intrinsic electrical conductivity and desired porosity, and also provides supercapacitor electrode with ultrahigh specific capacitance, excellent rate capability and superior cycle stability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) dispersion of graphene-based material, which involves dispersing holey graphene oxide sheets into the solvent; and (2) application of dispersion, which involves forming an ink composition comprising the dispersion and coating the ink composition to form a thin film. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a supercapacitor. Supercapacitor (100) Electrodes (104,108) Electrolyte (106)