Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1613697 | Journal of Alloys and Compounds | 2013 | 6 Pages |
Abstract
A facile microwave-assisted synthetic route has been successfully developed for preparing hexagonal Co(OH)2 nanosheets with average width of 2 μm and thickness of 100 nm. Co(OH)2 can further convert to porous Co3O4 nanosheets via thermal decomposition. Their phases, structures and morphologies were investigated by X-ray diffraction (XRD), atomic force microscopy (AFM), and transmission electron microscopy (TEM). Both Co(OH)2 and Co3O4 nanosheets can serve as potential candidates for anodes of Li-ion battery. The electrochemical study revealed that Co(OH)2 and Co3O4 nanosheets delivered a reversible capacity of 600 and 700 mA h gâ1 after 40 cycles, respectively. Cyclic voltammetry (CV) curves also confirmed the relative stability of the as-synthesized electrode materials. This effective microwave-assisted route may be a promising approach for preparing other transition metal hydroxide/oxides for energy applications.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Gen Chen, Engang Fu, Meng Zhou, Yun Xu, Ling Fei, Shuguang Deng, Vimal Chaitanya, Yongqiang Wang, Hongmei Luo,