“…To remove the limitation of energy density, researchers are working extensively throughout the world. 5,6 Recently, researchers are working very hard to graft advanced materials, such as iron oxide homogeneously dispersed on reduced graphene oxide, 7 grafting of polythiophene on graphene oxide sheets, 8 graphene-TiO 2 nanostructure, 9 and reduced graphene oxide-embedded Ni nanoparticles 10 for high performance supercapacitor electrodes for energy storage applications. Further, carbon-based electrodes, 11 Co-Ni layered double hydroxide nanosheets on nickel foam, 12 and carbon nanotubes to produce graphene nanoribbons by microwave radiation 13 were grafted, and the capacitance of the supercapacitor electrodes has increased to a great extent.…”