A Facile Gas–Liquid Co-deposition Method to Prepare Nanostructured Nickel Hydroxide for Electrochemical Capacitors

Article

DOI: 10.1007/s10904-013-9945-3

Cite this article as:
Tian, Y., Zhou, X., Huang, L. et al. J Inorg Organomet Polym (2013) 23: 1425. doi:10.1007/s10904-013-9945-3

Abstract:

A mixture of α-Ni(OH)2 and β-Ni(OH)2 nanoparticles with snow-ball like morphology was successfully synthesized by a facile gas–liquid co-deposition method. The capacitive behavior was tested by cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge/discharge measurements. A maximum specific capacitance of 2122 F/g was achieved at a current density of 250 mA/g and a potential range of 0.10–0.35 V (vs. Ag/AgCl electrode) for the Ni(OH)2 electrode. The asymmetric supercapacitor based on this Ni(OH)2 and activated carbon was fabricated. The maximum specific capacitance of 349 F/g and the maximal energy density of 66 Wh/kg were obtained at a current density of 250 mA/g with a capacitance loss of 5.4 % after 1,000 continuous cycles. These results demonstrate that gas–liquid co-deposition was an effective and facile method for synthesizing nanoparticles of nickel hydroxide with high capacitance.

Keywords

Ni(OH)2 Gas–liquid co-deposition Activated carbon Asymmetric supercapacitor 

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Key Laboratory of Environmental Science and Technology, Education Department of Liaoning Province, College of Environmental and Chemical EngineeringDalian Jiaotong UniversityDalianChina
  2. 2.Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education (MOE), School of Environmental Science and TechnologyDalian University of TechnologyDalianChina

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