Recent advances of vanadium oxides and their derivatives in supercapacitor applications: A comprehensive review

Because of the complexity of various oxidation states of vanadium, vanadium oxides show a large variety of stable and metastable structures, which pose an inevitable challenge to synthesize vanadium oxides with high purity, well-controlled stoichiometry, to their different morphologies and meticulously designed nanostructures, a must for high electrochemical performance devices for Supercapacitors. Vanadium oxide-based materials have been extensively studied for their metal-insulator transition behavior, and their unique characteristics that making them a promising candidate for electrochemical performance, supercapacitors and energy storage capabilities. This review article will discuss the synthesis methods, structural characterization techniques, and applications of vanadium oxide-based materials. We will also highlight the recent advances in vanadium oxide and provide insights into these materials' prospects in the Supercapacitors field.