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Electrodeposition of Ni particles on laser nanostructured electrodes for enhanced hydrogen evolution reaction

Poimenidis Ioannis, Moustaizis Stavros, Papakosta Nikandra, Tsanakas Michael D., Klini Argyro, Loukakos Panagiotis

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URI: http://purl.tuc.gr/dl/dias/61C81DC8-EFE6-4907-8248-306D40DFEB32
Year 2022
Type of Item Peer-Reviewed Journal Publication
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Bibliographic Citation I. A. Poimenidis, S. D. Moustaizis, N. Papakosta, M. D. Tsanakas, A. Klini, and P. A. Loukakos, “Electrodeposition of Ni particles on laser nanostructured electrodes for enhanced hydrogen evolution reaction,” Mater. Today Proc., vol. 67, pp. 953-958, Jan. 2022, doi: 10.1016/j.matpr.2022.04.652. https://doi.org/10.1016/j.matpr.2022.04.652
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Summary

In this study, a two-step electrode fabrication process is used to enlarge the electrocatalytic area of the electrodes and improve the hydrogen evolution reaction. Nickel electrodes were laser-nanostructured, and afterward, they were galvanostatically electrodeposited, a novel approach for electrodes used for HER. SEM and EDX analysis were performed. The electrochemical evaluation provided enhanced values of overpotential (η10 = 108 mV), Tafel slope (b = −121 mV dec−1) and double layer capacitance (1945 μF cm−2) compared to the literature. The stability of the electrodes was tested by its overpotential (|η100|=264 mV) in a current density of 100 mA cm−2.

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