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

34 Citations (Scopus)

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 - 2013
Externally publishedYes

Fingerprint

Nanosheets
Microwaves
Phase structure
Oxides
Cyclic voltammetry
Transition metals
Atomic force microscopy
Anodes
Pyrolysis
Transmission electron microscopy
X ray diffraction
Electrodes
Lithium-ion batteries

Keywords

  • Co(OH) ) Co)O)
  • Electrochemical
  • Microwave-assisted
  • Nanosheet

ASJC Scopus subject areas

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

Cite this

A facile microwave-assisted route to Co(OH)2 and Co 3O4 nanosheet for Li-ion battery. / Chen, Gen; Fu, Engang; Zhou, Meng; Xu, Yun; Fei, Ling; Deng, Shuguang; Chaitanya, Vimal; Wang, Yongqiang; Luo, Hongmei.

In: Journal of Alloys and Compounds, Vol. 578, 2013, p. 349-354.

Research output: Contribution to journalArticle

Chen, Gen ; Fu, Engang ; Zhou, Meng ; Xu, Yun ; Fei, Ling ; Deng, Shuguang ; Chaitanya, Vimal ; Wang, Yongqiang ; Luo, Hongmei. / A facile microwave-assisted route to Co(OH)2 and Co 3O4 nanosheet for Li-ion battery. In: Journal of Alloys and Compounds. 2013 ; Vol. 578. pp. 349-354.
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AU - Fei, Ling

AU - Deng, Shuguang

AU - Chaitanya, Vimal

AU - Wang, Yongqiang

AU - Luo, Hongmei

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