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

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 diffraction, nit...

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Bibliographic Details
Published in:RSC advances 2014-01, Vol.4 (37), p.19476-19481
Main Authors: Mondal, Anjon Kumar, Su, Dawei, Chen, Shuangqiang, Sun, Bing, Li, Kefei, Wang, Guoxiu
Format: Article
Language:English
Subjects:
Capacitors
Current density
Field emission
Hydroxides
Nanostructure
Nickel
Scanning electron microscopy
Supercapacitors
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Summary: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 diffraction, nitrogen adsorption–desorption isotherms, field 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 specific 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.
ISSN:2046-2069
2046-2069
DOI:10.1039/C4RA01719F