Carbon-coated MoO3 nanobelts as anode materials for lithium-ion batteries

Authors

Mohd Faiz Hassan, University of WollongongFollow
Zaiping Guo, University of WollongongFollow
Zhixin Chen, University of WollongongFollow
Hua-Kun Liu, University of WollongongFollow

RIS ID

30813

Publication Details

Hassan, M. F., Guo, Z., Chen, Z. & Liu, H. K. (2010). Carbon-coated MoO₃ nanobelts as anode materials for lithium-ion batteries. Journal of Power Sources, 195 (8), 2372-2376.

Abstract

MoO₃ nanobelts are synthesized by a simple hydrothermal route followed by carbon coating. The effects of the carbon coating on the nanobelts are investigated by Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscope (SEM) with an energy dispersive spectrometer (EDS), a transmission electron microscope (TEM), and galvanostatic cycling. As observed from the TEM and SEM images, the C–MoO₃ nanobelts have a diameter of 150 nm and a length of 5–8 μm. In the electrochemical results, the C–MoO₃ nanobelts exhibit excellent cycling stability after being cycled at a current rate of 0.1 C, maintaining their capacity at 1064 mAh g⁻¹ after 50 cycles. These results are better than those for a bare MoO₃ nanobelt electrode. The excellent electrochemical performance of the C–MoO₃ nanobelts can be attributed to the effects of the carbon coating which stabilizes the structure of the MoO₃, enhances the ionic/electrical conductivity, and moreover, can serve as a buffering agent to absorb the volume expansion during the Li⁺ intercalation process.