#6470. Effect of catalyst distribution and structural properties of anode porous transport electrodes on the performance of anion exchange membrane water electrolysis

October 2026publication date
Proposal available till 10-05-2025
4 total number of authors per manuscript0 $

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Journal’s subject area:
Condensed Matter Physics;
Energy Engineering and Power Technology;
Fuel Technology;
Renewable Energy, Sustainability and the Environment;
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Abstract:
Anion exchange membrane (AEM) water electrolyzers are expected to be novel devices for hydrogen (H2) production that achieve high performance at low capital cost. The effect of catalyst distribution in anode porous transport electrodes (PTEs) on the performance of AEM water electrolysis is experimentally examined. Based on the analysis of the correlation between the PTE structure and the electrolysis performance, it was revealed that the surface catalyst coverage is related to the activation overpotential, and that the location and compactness of the catalyst layer (CL) affects the concentration overpotential. This suggests that the water diffusion through the membrane is related to the concentration overpotential, and that denser CLs can promote water diffusion and thus mitigate the concentration overpotential. Based on the electrolysis data with PTEs of different thickness, it was also revealed that decreasing the thickness of the anode PTE enables good performance with low catalyst loading.
Keywords:
Anion exchange membrane; Catalyst distribution; Concentration overpotential; Porous transport electrode; Water electrolysis

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