4.  Hydrogen Evolution Reaction on Nickel-Based Platinum Electrodes

Authors: A. Iacob, M. Dan, A. Kellenberger and N. Vaszilcsin


Abstract:

Spray pyrolysis technique was used to prepare smooth nickel-based platinum nanoparticles electrode. The structure and the distribution of Pt nanoparticles on the electrode surface have been investigated by scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). The hydrogen evolution reaction (HER) was studied in 1 M NaOH solution by linear sweep voltammetry (LSW) technique. The kinetic parameters were determined from Tafel polarization curves. It was found that the increased activity for the HER is due to an increased real surface area in case of the smooth Ni-Pt electrode. The temperature influence on the HER was investigated and the electrochemical activation energy was determined for smooth Ni-based platinum nanoparticles electrode.


Keywords: platinum nanoparticles, hydrogen evolution reaction, water alkaline electrolysis, Tafel polarization

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