Fabrication of VO2 (B) nanobelts and their application in lithium ion batteries

Abstract

VO2 (B) nanobelts have been successfully synthesized via a simple hydrothermal route. The products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and Raman spectrum. These nanobelts are of rectangular cross-section with mean length about 1m, mean width about 80nm, and mean thickness about 50nm. The as-synthesized VO 2 nanobelts were assembled as the cathode electrodes of lithium ion batteries. Their electrochemical properties were studied by conventional charge/discharge tests, which show an initial discharge capacity of 321mAhg -1 with voltage plateau near 2.5V. These results indicated that such hydrothermally synthesized VO2 (B) nanobelts could be an ideal candidate of cathode material for lithium ion battery. © 2011 Shibing Ni et al.