Abstract
The Ni/Ag2O/RuO2-Pt composite cathode was prepared by sol-gel method using RuCl3 and H2PtCl6 as raw materials. The effects of heat treatment conditions and AgNO3 concentrations on hydrogen evolution properties were investigated. The morphology and composition of Ni/Ag2O/RuO2-Pt composite cathode have been characterized by XRD, XPS and SEM-EDS. It is demonstrated that the surface structure of Ni/Ag2O/RuO2-Pt composite cathode is more compact, with fewer cracks and larger surface roughness than pure nickel. At the conditions of 0.3 A?cm-2, 90 oC, and 11 mol?L-1 NaOH solution, the hydrogen evolution overpotential of Ni/Ag2O/RuO2-Pt composite cathode increases 484 mV with respect to pure nickel cathode, and the exchange current density is about ten times as many as that of pure nickel cathode. This composite electrode with high activity could be applied in the chlor-alkali industry for reducing power consumption.
Graphical Abstract
Keywords
chlor-alkali industry, cathode, sol-gel method, hydrogen evolution
Publication Date
2012-02-28
Online Available Date
2011-11-30
Revised Date
2011-11-16
Received Date
2011-11-06
Recommended Citation
Shu HUANG, Xue-Ming LI, Wu-Lin LI, Wen WANG.
Preparation and Hydrogen Evolution Properties of Ni/Ag2O/RuO2-Pt Cathodes[J]. Journal of Electrochemistry,
2012
,
18(1): Article 10.
DOI: 10.61558/2993-074X.2881
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol18/iss1/10
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons
