Study of the Kinetics of the Hydrogen Evolution Reaction on Phosphate‐Bonded Composite Nickel Electrodes by the Open‐Circuit Potential Decay Method

1 April 1991

journal article
Published by The Electrochemical Society in Journal of the Electrochemical Society

Vol. 138 (4) , 900-905
https://doi.org/10.1149/1.2085744

Abstract

The hydrogen evolution reaction on phosphate‐bonded nickel electrodes is investigated in at 25°C by the open‐circuit potential decay method to evaluate the kinetics of reactions. It was found that the HER proceeds via the Volmer‐Heyrovsky mechanism. The good performance of the electrode is attributed to its high surface area and the greater intrinsic activity of spiky filamentary nickel as compared to smooth nickel. Electrochemical oxidation of the phosphate‐bonded nickel electrode carried out at 1530 mV/RHE causes changes in the kinetics of the hydrogen evolution reaction.

Keywords

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