期刊
出版社
AMER INST PHYSICS
DOI: 10.1063/1.4810068
关键词
Graphite oxide; supercapacitors; energy density; power density
Graphite oxide/beta-Ni(OH)(2) composites have been investigated as electrode material in supercapacitors. Phase formation of electrode material is investigated using diffraction measurements. Particle shape-size studies show deposition of beta-Ni(OH)(2) nanoparticles on graphite oxide (GO) sheets. Electrochemical performance of GO/beta-Ni(OH)(2) composite in supercapacitors is discussed based on the analysis of electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and galvanostatic charge-discharge studies. Excellent energy density of similar to 53Wh/kg in 1M Na2SO4 aqueous electrolyte is reported at power density of similar to 1364W/kg. The significance of results is discussed in the paper.
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