Electrochemical Activity of Electrodeposited V2O5 Coatings

Vanadium oxide microcrystallites are electrodeposited at room temperature. The effect of the deposition current density on the structural, morphological and electrochemical properties of the coatings is studied. The electrochemical activity of the material is found to improve with the deposition current density utilized during electrodeposition. At the highest deposition current values, marked amounts of lithium charge are observed to interchange with the material owing to the increased coverage of its structure. The highest specific capacitance of 145 F g(-1) measured in 1 M LiClO4 is comparable to previously reported values using different electrolytes such as NaCl, LiCl and KCl. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.054301jes] All rights reserved.