▎ 摘　　要

NOVELTY - The coating slurry composition has a quaternary system of carbon or carbonaceous material, a binder, a solvent, a current collector and a co-solvent. The system comprises low-density and high-density activated carbon, graphene nanoplatelets and a low-surface area conductive carbon. The low and high density activated carbon constitute active materials. The graphene nanoplet and the low- surface area carbon constitute conductive agents. The ratio of graphene nanoplets and the carbon is 50:50. USE - Composition for preparation of coating slurry for fabricating high density carbon electrodes in an ultracapacitor used in wind turbines, forklifts, and grid power supply during peak power demand. ADVANTAGE - The method provides high density carbon electrodes that enhance the power density and the volumetric capacitance of the ultracapacitors and reduce the equivalent series resistance (ESR) value. DESCRIPTION OF DRAWING(S) - The drawing shows an overview of a Scanning Electron Microscope (SEM) image of the low- density activated carbon.