Solvothermal Synthesis of Nanostructured α-Ni(OH)₂/ Mesoporous Carbon Composites for Supercapacitors

Abstract:

Nanostructured α-Ni(OH)₂/ mesoporous carbon composites were synthesized by a facile solvothermal method using sodium dodecyle sulfate as a soft template and urea as a hydrolysis-controlling agent. The obtained products were characterized by X-ray diffraction(XRD), and scanning electron microscopy(SEM). Electrochemical properties studies were carried out using cyclic voltammetry(CV) and galvanostaitc charge/discharge method. The results exhibited that the α-Ni(OH)₂/ mesoporous carbon composites single electrode had high specific capacitance in KOH electrolyte. The maximum specific capacitance of the α-Ni(OH)₂/ mesoporous carbon composites single electrode was up to 2191 F/g in 6 M KOH solution at a charge-discharge current density of 4 mA/cm², when the mass percent of mesoporous carbon was 5%. It is suggested its potential application in the electrode material for supercapacitors.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 1227-1230
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.1227
• Online since: May 2011
• Authors: Zhan Jun Yu, Ying Dai, Wen Chen
• Keywords: Mesoporous Carbon, Specific Capacitance, Super-Capacitor (SC), α-Ni(OH)₂

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