Abstract
The kinetics of the hydrogen evolution reaction have been studied on Ni-Al alloy electrodes. The electrodes after leaching aluminium in alkaline solution, are very active despite their large Tafel slopes. The SEM studies show a formation of deep pores on the electrode surface. The kinetics were studied using an ac impedance technique. It was found that the impedance plots may be explained assuming a fractal model. The logarithm of the charge transfer resistance is a linear function of the overpotential. Using a nonlinear least square approximation it was found that the reaction proceeds through the Volmer-Heyrovsky mechanism and the kinetic parameters were estimated.
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Rami, A., Lasia, A. Kinetics of hydrogen evolution on Ni-Al alloy electrodes. J Appl Electrochem 22, 376–382 (1992). https://doi.org/10.1007/BF01092692
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DOI: https://doi.org/10.1007/BF01092692