An approach to develop high performance supercapacitor using Bi2O3 based binary and ternary nanocomposites

Designing supercapacitor devices using different active materials is an effective approach for the emergent development of materials in the energy storage applications at the current scenario. Herein, a series of materials, Bi₂O₃, Ag/Bi₂O₃, g-C₃N₄ and Ag/Bi₂O₃/g-C₃N₄ have been synthesized and characterized for the examination of supercapacitor applications. The supercapacitance performances of the nanomaterials were in the order of Bi₂O₃ < g-C₃N₄ < Ag/Bi₂O₃/g-C₃N₄ < Ag/Bi₂O₃ and higher supercapacitance was observed for Ag/Bi₂O₃ nanocomposite (303 F g^–1) may be due to the effective play of silver doping in Bi₂O₃. Hence it is important to optimize the rational designing of these kinds of binary/ternary nanocomposites for the further development in the supercapacitor applications.