Vanadium Oxide Nanotube Spherical Clusters Prepared on Carbon Fabrics for Energy Storage Applications

Vanadium oxide nanotubes have shown great promise as electrode materials for energy storage devices. In this study, we report the synthesis of V2O5 nanotube (VNT) clusters, which form densely packed radial arrangements of VNTs on high-surface-area carbon fiber fabrics (CF). This was achieved by coating the CF with V2O5 by pulsed laser deposition (PLD). Hydrothermal treatment of the PLD films in the presence of excess intercalated V2O5 results in formation of well-adhered VNT clusters on the CF. The densely packed VNTs have inner and outer diameters and interlayer distances of similar to 24, similar to 70, and similar to 2.4 nm, respectively. Coin cell type supercapacitors (CR2032) were assembled using VNT-CF material and electrochemical properties were evaluated.