High capacitive performance of nanostructured Mn-Ni-Co oxide composites for supercapacitor
- Institute of Applied Chemistry, Xinjiang University, Urumqi 830046 (China)
- College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China)
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 electrochemical characteristics. A maximum capacitance value of 1260 F g{sup -1} could be obtained within the potential range of -0.1 to 0.4 V versus saturated calomel electrode (SCE) in 6 mol L{sup -1} KOH electrolyte.
- OSTI ID:
- 21143988
- Journal Information:
- Materials Research Bulletin, Vol. 43, Issue 5; Other Information: DOI: 10.1016/j.materresbull.2007.06.006; PII: S0025-5408(07)00242-5; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CAPACITANCE
CHEMICAL COMPOSITION
COBALT COMPOUNDS
COPRECIPITATION
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
IMPEDANCE
MANGANESE COMPOUNDS
MORPHOLOGY
NANOSTRUCTURES
NICKEL COMPOUNDS
OXIDES
PERFORMANCE
POTASSIUM HYDROXIDES
PYROLYSIS
SCANNING ELECTRON MICROSCOPY
SPECTROSCOPY
SYNTHESIS
VOLTAMETRY
X-RAY DIFFRACTION