Electrochemical property analysis of zinc vanadate nanostructure for efficient supercapacitors

Nano structured zinc vanadate, Zn-3(VO4)(2), have been successfully synthesized by simple co-precipitation method and calcined at 600 degrees C. Calcinated Zn-3(VO4)(2) nano flakes were characterized by various analytical techniques to examine the structural, optical, and surface morphological properties. The X-ray diffraction pattern revealed that the prepared Zn-3(VO4)(2) nanoparticles were orthorhombic crystalline structure and found the crystallite structure was similar to 44 nm. The flake shaped Zn-3(VO4)(2) nanoparticles was evaluated by electron microscopies such as scanning electron microscopy and high-resolution transmission electron microscopy studies. Elemental compositions and functional groups were elucidated by energy dispersive spectroscopy with mapping and Fourier transform infrared spectral studies. Electrochemical behaviour of Zn-3(VO4)(2) nanostructures were investigated by cyclic voltammetry, chronopotentiometry and electrochemical impedance spectroscopic analysis. The specific capacitance value for the prepared nanoparticles was 312 Fg(-1) with high retention of about 90.7% which was achieved after 5000th cycles. It clearly revealed that synthesized Zn-3(VO4)(2) nanoparticles may lead to potential application for forthcoming energy storage devices.