Effect of Deposition Current Density on Electrodeposited Vanadium Oxide Coatings

Abstract

Amorphous vanadium pentoxide coatings were electrodeposited at room temperature on ITO glass substrates using a solution of vanadyl (IV) acetylacetonate in methanol. The electrochemical performance of the coatings as a function of deposition current density was studied using a classical three-electrode potentiostatic cell system and a solution of 1 M LiClO4 in polypropylene carbonate as an electrolyte. The sample grown using deposition current density of 1 mA cm−2 was found to exhibit the best electrochemical activity in terms of the fastest bleaching kinetics and the highest charge storage due to the increased roughness of the structure.