Vertically aligned mixed V 2O 5-TiO 2 nanotube arrays for supercapacitor applications

ArticleinChemical Communications 47(27) · July 2011with18 Reads
Impact Factor: 6.83 · DOI: 10.1039/c1cc11811k

    Abstract

    Highly ordered mixed V 2O 5-TiO 2 nanotubes can be formed by self-organizing anodization of Ti-V alloys with vanadium content of up to 18 at%. In the resulting oxide nanotube arrays, the vanadium is electrochemically switchable leading to a specific capacitance that can reach up to 220 F g -1 and an energy density of 19.56 Wh kg -1 with perfect reversibility and long-term stability. Thus these mixed oxide nanotubes may be considered as a promising candidate for supercapacitors. © 2011 The Royal Society of Chemistry.