Journal
MATERIALS RESEARCH BULLETIN
Volume 43, Issue 5, Pages 1119-1125Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2007.06.006
Keywords
nanostructures; oxides; chemical synthesis; electrochemical measurement; electrochemical properties
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Nanostructured Mn-Ni-Co oxide composites (MNCO) were prepared by thermal decomposition of the precursor obtained by chemical co-precipitation of Mn, Ni and Co salts. The chemical composition and morphology were characterized by X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM). The electrochemical capacitance of MNCO electrode was examined by cyclic voltammetry, impedance and galvanostatic charge-discharge measurements. The results showed that MNCO electrode exhibited the good electrochernical characteristics. A maximum capacitance value of 1260 F g(-1) could be obtained within the potential range of -0.1 to 0.4 V versus saturated calomel electrode (SCE) in 6 mol L-1 KOH electrolyte. (C) 2007 Elsevier Ltd. All rights reserved.
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