A simple approach to prepare nickel hydroxide nanosheets for enhanced pseudocapacitive performance

Royal Society of Chemistry
Publication Type:
Journal Article
RSC Advances, 2014, 4 pp. 19476 - 19481
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Nickel hydroxide nanosheets were synthesized by a simple microwave assisted heating method and investigated as electrochemical pseudo-capacitive materials for supercapacitors. The crystalline structure and morphology of the as-obtained Ni(OH)2 nanosheets were characterized by X-ray di?raction, nitrogen adsorptiondesorption isotherms, ?eld emission scanning electron microscopy and transmission electron microscopy. The electrochemical properties of the Ni(OH)2 nanosheets were evaluated by cyclic voltammetry and chronopotentiometry technology in 2 M KOH solution. The nickel hydroxide nanosheet electrode shows a maximum speci?c capacitance of 2570 F g-1 at a current density of 5 A g-1 and exhibits superior cycling stability. These results suggest its potential application as an electrode material for supercapacitors.
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