Synthesis and characterisation of oxide catalyst for oxygen evolution reaction in alkaline media
Date
2023
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Tartu Ülikool
Abstract
The properties and suitability for catalysing the oxygen evolution reaction in alkaline media
were studied for four oxide catalyst materials with the perovskite structure. The structure of the
materials was studied by X-ray diffraction analysis, scanning electron microscopy with energydispersive X-ray spectroscopy. Two materials were studied in a three-electrode measurement
set-up. Ten electrodes were prepared by coating Ni mesh with precursor solution of an oxide
catalyst. Electrodes were characterised by scanning electron microscopy with energy-dispersive
X-ray spectroscopy. The electrochemical activity of the electrodes was studied in a twoelectrode set-up in conditions similar to the operating conditions of an alkaline water
electrolyser. Results demonstrated that catalyst coating improved the catalytic activity of the
substrate, resulting in activity similar to a commercial precious metal electrode.
Description
Keywords
alkaline electrolysis, oxide catalyst, oxygen evolution reaction