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Borophene is a single atom layer of boron, which is a novel material, stronger and more flexible than graphene has got attention and opened a new arena in the field of supercapacitor due to excellent electrical, thermal, chemical and mechanical properties. The borophene possesses more density of states of around Fermi level which mainly originated by the pz orbital instead of px and py, and Dirac cone of borophene exhibits enhanced quantum capacitance, surface storage charges and integrated quantum capacitance, in turn enhancing its specific capacitance. This review covers the theoretical prediction of borophene and its uniqueness over graphene. Also, the review summarizes the different synthesis methods of borophene nanosheets such as bottom-up as well as top-down approaches with their merits and demerits. The theoretical predictions as well as experimental observations of borophene and its nanocomposite for supercapacitor applications are reviewed in detail. Furthermore, the prospects and challenges in developing borophene nanosheet for supercapacitor applications are addressed along with the summary.
K. Hareesh (Tue,) studied this question.