ABSTRACT
A current scientific society needs the use of renewable energy on a large scale. We need a good energy storage system to fulfill the demand for renewable energy. For this purpose, the supercapacitor is an ideal electrical energy storage device due to its high-power density and long-life cycle. Graphene-based two-dimensional (2D) nanomaterials are more favorable in energy storage applications, mainly in supercapacitors, because of their unique properties, such as high specific surface area, high mechanical, and chemical stability with excellent electrical conductivity at low cost. In this chapter, the recent development of graphene-based 2D nanomaterials for supercapacitor application is studied. This chapter briefly reviews the synthesis of graphene material using various methods and covers the charge storage mechanism in graphene-based electrochemical double-layer capacitor and pseudo-supercapacitor.
