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Catalysts 2017, 7(8), 239; doi:10.3390/catal7080239

The Differentiating Polarization Curve Technique for the Tafel Parameter Estimation

1
Department of Mechanical System Engineering, Muroran Institute of Technology, 27-1, Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
2
Graduate School of Muroran Institute of Technology, 27-1, Mizumoto-cho, Muroran, Hokkaido 050-8585, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Luísa Margarida Martins
Received: 21 July 2017 / Revised: 11 August 2017 / Accepted: 14 August 2017 / Published: 17 August 2017
(This article belongs to the Special Issue Advances in Electrocatalysis)
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Abstract

An experimentally obtained polarization curve for the hydrogen evolution reaction on silver in a 0.5 mol dm−3 solution was investigated using an electrochemical curve technique named the differential polarization method (DPM). The exchange current density estimated by the Tafel extrapolation method (TEM) and the DPM were compared and assessed from points of simple and more accurate handling. It is shown that the DPM has two advantages: (1) proper reading of the Tafel slope region and (2) elimination of the undesirable physical factors such as oxide film and solution resistance. View Full-Text
Keywords: hydrogen evolution reaction; exchange current density; silver electrode; electrochemical measurement; irreversible reaction hydrogen evolution reaction; exchange current density; silver electrode; electrochemical measurement; irreversible reaction
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Seri, O.; Siree, B. The Differentiating Polarization Curve Technique for the Tafel Parameter Estimation. Catalysts 2017, 7, 239.

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