Improvement in Electrochemical Performance of Spray Deposited V2O5 Thin Film Electrode by Anodization.

Abstract Electrochemical performance of spray deposited vanadium oxide (V 2 O 5 ) thin film electrode before and after anodization of the film was studied. XRD pattern revealed that,V 2 O 5 thin film was polycrystalline and SEM of anodised film revealed increase in porosity. Increase in surface wet ability was observed after anodizition. The specific capacitance of V 2 O 5 thin film electrode in 0.5M K 2 SO 4 electrolyte at scan rate of 10 mV/s increased after anodization from 272.37 F/g to 421.21 F/g, specific energy and specific power increased from 19.19 Wh/kg to 24.92Wh/kg and 15.08 kW/kg to 17.32 kW/kg respectively.