%0 Generic
%A Iglesias van Montfort, Hugo-Pieter
%A Burdyny, Thomas
%D 2024
%T Data underlying the publication: Mapping Spatial and Temporal Electrochemical Activity of Water and CO2 Electrolysis on Gas-Diffusion Electrodes Using Infrared Thermography
%U 
%R 10.4121/fd766def-ab29-423e-99fd-b7cc6305b3e1.v1
%K CO2 electrolysis
%K infrared thermography
%K infrared
%K electrolysis
%K gas diffusion electrode
%X <p>Electrolysis of water, CO2, and nitrogen-based compounds presents the opportunity of generating fossil-free fuels and feedstocks at an industrial scale. Such devices are complex in operation, and their performance metrics are usually reported as electrode-averaged quantities. In this work, we report the usage of infrared thermography to map the electrochemical activity of a gas-diffusion electrode performing water and CO2 reduction. By associating the heat map to a characteristic catalytic activity, the presented system can capture electrochemical and physical phenomena as they occur in electrolyzers for large-scale energy applications. We demonstrate applications for catalyst screening, catalyst-degradation measurements, and spatial activity mapping for water and CO2 electrolysis at current densities up to 0.2 A cm–2. At these current densities we report catalyst temperature increases (&gt;10 K for 0.2 A cm–2) not apparent otherwise. Furthermore, substantial localized current density fluctuations are present. These observations challenge assumed local conditions, providing new fundamental and applied perspectives.</p><p><br></p>
%I 4TU.ResearchData