Capacitive characteristics of Ni–Co oxide nano-composite via coordination homogeneous co-precipitation method

02 engineering and technology 0210 nano-technology 7. Clean energy 01 natural sciences 0104 chemical sciences
DOI: 10.1007/s10853-009-3373-3 Publication Date: 2009-03-12T01:39:47Z
ABSTRACT
A series of Ni–Co oxide nano-composites were prepared by thermal decomposition of the precursors obtained via coordination homogeneous co-precipitation method. Thermogravimetric analysis (TGA), powder X-ray diffraction (XRD), and transition electron microscopy (TEM) tests were applied to investigate the thermal behavior, crystalline. and morphology of the Ni–Co oxide composites. The electrochemical properties of Ni–Co oxide electrodes were evaluated by cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance measurements. Results showed that the calcination temperature had great effect on morphology and specific capacitance of product. The effect of the molar ratios of Ni2+/Co2+ in the reaction system on the electrochemical properties of Ni–Co oxide electrodes was also discussed.
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