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

Authors

Anjon Kumar Mondal, University of Technology, Sydney
Dawei Su, University of WollongongFollow
Shuangqiang Chen, University of Technology, Sydney
Bing Sun, University of Technology, SydneyFollow
Kefei Li, University of Technology, SydneyFollow
Guoxiu Wang, University of Technology, SydneyFollow

RIS ID

90359

Publication Details

Mondal, A. Kumar., Su, D., Chen, S., Sun, B., Li, K. & Wang, G. (2014). A simple approach to prepare nickel hydroxide nanosheets for enhanced pseudocapacitive performance. RSC Advances, 4 (37), 19476-19481.

Abstract

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.