Electrodeposition of Ni particles on laser nanostructured electrodes for enhanced hydrogen evolution reactionElectrodeposition of Ni particles on laser nanostructured electrodes for enhanced hydrogen evolution reaction Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2024-07-162022enIn 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.Part of special issue: International Conferences & Exhibition on Nanotechnologies, Organic Electronics & Nanomedicine – NANOTEXNOLOGY 2021.The authors would like to acknowledge the HELLAS-CH national infrastructure (MIS 5002735) implemented under “Action for Strengthening Research and Innovation Infrastructures,” funded by the Operational Program” Competitiveness, Entrepreneurship and Innovation” (NSRF 2014-2020) and co-financed by Greece and the European Union (European Regional Development Fund).http://creativecommons.org/licenses/by/4.0/Materials Today: Proceedings67953-958 Poimenidis Ioannis Ποιμενιδης Ιωαννης Moustaizis Stavros Μουσταιζης Σταυρος Papakosta Nikandra Tsanakas Michael D. Klini Argyro Loukakos Panagiotis Elsevier Laser-nanostructuring Electrodeposition on Ni Alkaline electrolysis Enhanced HER kinetics