Premkumar, T. and Sathiyanarayanan, S. (1990) Electrocatalysis of the hydrogen evolution reaction by thermally formed sulfides on steels. Bulletin of Electrochemistry, 06 (02). pp. 268-272. ISSN 0256-1654

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Abstract

The electrocatalytic activity of sulfides, formed by thermal sulfidization of various commercially available steels, for the cathodic evolution of hydrogen from sodium chloride is dealt with in this paper. The effects of certain surface active anions on the hydrogen evolution reaction on these sulfidized steels have also been studied It has been shown that sulfidization of carbon steels and silicon steels increases their electrocatalytic activity with respect to cathodic hydrogen evolution and thereby reduces the overpotential in sodium chloride solutions (typically about 100-150 mV at 0.5 A cm-2). The anomalously high Tafel slopes observed for h.e.r. on steel during brine electrolysis is explained as due most probably to the presence of a hydride film on the steel surface at high cathodic potentials. A comparison of the hydrogen overpotentials and corrosion currents reveals that carbon steels – both in their plain and sulfidized forms – are better cathodes for brine electrolysis

Item Type:	Article
Uncontrolled Keywords:	Hydrogen evolution; Sulphide steel; Galvanostatic polarization
Subjects:	Corrosion Science and Engineering Electrochemical Power Sources
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	21 May 2012 16:34
Last Modified:	17 Oct 2012 09:56
URI:	http://cecri.csircentral.net/id/eprint/2619

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