Facile synthesis of bismuth niobium oxide (Bi3NbO7) micro squares as a novel pseudocapacitive electrode material for supercapacitors

Herein Bi3NbO7 micro squares were prepared by a simple solvothermal method, and their electrochemical performances towards supercapacitor application were assessed. XRD, Raman, XPS, FESEM and TEM analysis were performed as the confirmation studies for the Bi3NbO7. The electrochemical measurements specified that the maximum specific capacitance value of 596 Fg−1 at a given current density of 2 Ag−1, and an outstanding cycling stability of ∼ 90 % capacitance retention over 2000 cycles at 10 Ag−1 were achieved. Hence, the single-component Bi3NbO7 electrode material has been considered as alternate material for supercapacitor applications.