Nano-structured vanadium oxide (V2O5) is fabricated via facile thermal-decomposition of a vanadium precursor and vanadyl oxalate produced by reacting micro-sized V2O5 with oxalic acid. The V2O5 nanorods produced by this method exhibit much better electrochemical performance than commercial micro-sized V2O5. The optimized-nanorod electrodes with a high density of (001) planar defects give the best specific discharge capacities of 270 mAh g-1 at C/2 (147 mA g-1) coupled with good cycle stability with only 0.32% fading per cycle. Even at a high rate of 4C (1176 mA g-1), the nanorod electrode still delivers 198 mAh g-1. These results suggest that the nanostructured V2O5 is a good cathode for high-rate, lithium-ion battery applications.
Revised: March 18, 2011 |
Published: April 23, 2010
Citation
Pan A., J. Zhang, Z. Nie, G.H. Cao, B.W. Arey, G. Li, and S. Liang, et al. 2010.Facile synthesized nanorod structured vanadium pentoxide for high-rate lithium batteries.Journal of Materials Chemistry 20, no. 41:9193-9199.PNNL-SA-72345.doi:10.1039/C0JM01306D