Graphene-Based Supercapacitors

Ever since the initial report of producing graphene sheets (GS) through the micromechanical exfoliation technique in 2004, there has been significant interest in graphene-based nanocomposites materials. These nanocomposites have captured considerable attention due to their fundamental properties and potential applications in conversion also energy storage system. As compare to other materials, graphene-based composite and their derivatives possess a distinct two-dimensional (2D) structure, remarkable electronic mobility, exceptional electronic and thermal conductivities, impressive optical transparency, strong mechanical strength, as well as an extremely large surface area. Due to these favorable properties, they are considered as most promising candidates for supercapacitors (SCs). In the current chapter, we discussed the current development in the field of graphene and its derivatives, as well as various composite materials with graphene used in electrochemical SC applications. Moreover, we have summarized the SC performance of composites made of metal oxide, phosphate, phosphide, sulfide and conducting polymers including PANI, PPy, and PEDOT based on graphene. Lastly, the advantages and challenges of graphene-based materials for upcoming energy storage are discussed.