A facile microwave-assisted route to Co(OH)2 and Co 3O4 nanosheet for Li-ion battery

Gen Chen, Engang Fu, Meng Zhou, Yun Xu, Ling Fei, Shuguang Deng, Vimal Chaitanya, Yongqiang Wang, Hongmei Luo

Research output: Contribution to journalArticle

36 Scopus citations

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 g-1 after 40 cycles, respectively. Cyclic voltammetry (CV) curves also confirmed the relative stability of the as-synthesized electrode materials. This effective microwaveassisted route may be a promising approach for preparing other transition metal hydroxide/oxides for energy applications.

Original languageEnglish (US)
Pages (from-to)349-354
Number of pages6
JournalJournal of Alloys and Compounds
Volume578
DOIs
StatePublished - Jan 1 2013

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Keywords

  • Electrochemical
  • Microwave-assisted
  • Nanosheet

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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