Influence of Concentration and Volume of Precursor On The Electrochemical Properties of Vanadium Oxide Thin Films Prepared By Spray Pyrolysis

Vanadium oxide (V2O5) thin films have been prepared by spray pyrolysis using different concentrations and volumes of precursor solution via aqueous route at 673K deposition temperature. The influences of concentration and volume on the structural, morphological and electrochemical properties of the deposited samples are studied well. X - ray diffraction study shows orthorhombic crystal structure with V2O5 phase, confirmed by FIER spectroscopy. Scanning electron microscopy shows granular, homogeneous and dense surface morphology. Cyclic voltammeter y of all samples carried at all scan rates. Samples prepared using 0.05M, 40 ml of precursor solution shows highest specific capacitance 428.25 F/gm at 5 inVis, Charge discharge behavior exhibits specific energy 18.73 Wh/k2, specific power 36.00 kW/kg, columbic efficiency 87.50 %. Impedance spectroscopy study was carried in the frequency range 1mHz 1.MHz, reveals pseudocapacitive behavior of the electrode exhibiting internal resistance 1.34 ohm.