Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8000716 | Journal of Alloys and Compounds | 2014 | 8 Pages |
Abstract
A facile and efficient strategy for preparing reduced graphene oxide-cobalt molybdate (RGO/CoMoO4) nanocomposites assisted by microwave irradiation for the first time is demonstrated. The resulting nanocomposites are comprised of CoMoO4 nanoparticles that are well-anchored on graphene sheets by in situ reducing. The prepared RGO/CoMoO4 nanocomposites have been thoroughly characterized by Fourier-transform infrared spectroscopy, X-ray diffraction, Raman spectroscopy, thermogravimetric analysis, scanning electron microscopy and X-ray photoelectron spectroscopy. Importantly, the prepared nanocomposites exhibit excellent electrochemical performance for supercapacitors. Results show that RGO/CoMoO4 nanocomposites exhibited much better electrochemical capability than pure-CoMoO4 and RGO/CoMoO4 for annealing. RGO/CoMoO4 nanocomposites with 37.4Â wt% CoMoO4 content achieved a specific capacitance about 322.5Â FÂ gâ1 calculated from the CV plots at 5Â mVÂ sâ1, which was higher than that of pure-CoMoO4 (95.0Â FÂ gâ1) and RGO/CoMoO4 for annealing (102.5Â FÂ gâ1). The good electrochemical performance can be attributed to the synergistic effects of the individual components.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Xiaowei Xu, Jianfeng Shen, Na Li, Mingxin Ye,