ABSTRACT
With the increasing energy-demand consequences of the world population, energy has turned into a primary focus by the scientific community. The tungsten-based supercapacitor is one of the most promising prospects for efficient electrochemical performance and appeared as potential energy storage device in energy field. To bring this tungsten-based supercapacitor to commercial readiness in terms of performance and cost, massive research works are needed to develop high electrochemical behavior of supercapacitor. Recent studies have reported that hybrid tungsten trioxide (WO3) with graphene (rGO) nanocomposite has emerged as the leading candidate for supercapacitor electrode due to the advantages of individual active material. However, rGO and WO3 are still suffered from some disadvantages such as the restacking of rGO and poor conductivity nature of WO3. Thus, integrating both electrode materials can enhance the electrochemical performance of rGO/WO3 nanocomposite. The relationship between the rGO and WO3 as well as their supercapacitor performance was still remains unclear. It was noticed that the properties of this binary oxide primarily rely upon the preparation method and the optimum experimental conditions of incorporation of rGO/WO3 nanocomposite. In the following section, the historical overview, basic principal, material determination and published works by different researchers with regards to the rGO/WO3 nanocomposite applied in supercapacitor application will be reviewed.
