Preparation and Hydrogen Evolution Properties of Ni/Ag2O/RuO2-Pt Cathodes

Authors

Shu HUANG, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China;
Xue-Ming LI, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China;Follow
Wu-Lin LI, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China;
Wen WANG, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China;

Corresponding Author

Xue-Ming LI(xuemingli@cqu.edu.cn)

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

DOI Link

https://doi.org/10.61558/2993-074X.2881

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

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