[en] Supercapacitor has recently received more and more extensive attention of researchers worldwide. V₂O₅ as an ideal electrode for supercapacitor has attracted great attention due to its mixed oxidation states, natural abundance, high capacitance, and great energy density. In this review, the effect of the morphology, structure, and composition of V₂O₅-based nanomaterials as electrode has been discussed. Besides, the symmetric and asymmetric supercapacitors using V₂O₅-based nanocomposites as electrode show high-energy density and wide voltage window, which can compete with batteries.