High capacitive performance of nanostructured Mn-Ni-Co oxide composites for supercapacitor

Journal Article · Tue May 06 04:00:00 EDT 2008 · Materials Research Bulletin

OSTI ID:21143988

Jianmin, Luo ^[1]; Bo, Gao ^[2]

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1. Institute of Applied Chemistry, Xinjiang University, Urumqi 830046 (China)
2. 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, Journal Name: Materials Research Bulletin Journal Issue: 5 Vol. 43; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
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