Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 578, Issue -, Pages 349-354Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.06.042
Keywords
Microwave-assisted; Co(OH)(2); Co3O4; Nanosheet; Electrochemical
Categories
Funding
- NSF [1131290]
- office of Vice President for Research at NMSU
- NSF Major Research Instrument (MRI) program [1229558]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1229558] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1131290] Funding Source: National Science Foundation
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A facile microwave-assisted synthetic route has been successfully developed for preparing hexagonal Co(OH)(2) nanosheets with average width of 2 mu m 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 g(-1) 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. (c) 2013 Elsevier B.V. All rights reserved.
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