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001050746 1001_ $$0P:(DE-Juel1)201441$$aLiu, Jialiang$$b0$$eCorresponding author$$ufzj
001050746 1112_ $$a76th Annual Meeting of the International Society of Electrochemistry$$cMainz$$d2025-09-07 - 2025-09-12$$wGermany
001050746 245__ $$aAdhesion force analysis on PEM water electrolysis materials
001050746 260__ $$c2025
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001050746 520__ $$aProton Exchange Membrane Water Electrolysis (PEMWE) presents a promising solution for the direct integration of hydrogen production with renewable solar or wind energy due to its rapid response performance [1]. However, at high current densities, the accumulation of gas products within the catalyst layer can obstruct the connection between water molecules and the catalyst in the Membrane Electrode Assembly (MEA). This phenomenon leads to an increase of overpotential, thereby reducing the overall efficiency of electrochemical performance [2].Investigating the effect of the surface structure and composition of the catalyst layer on gas bubble adsorption can help to better understand and to reduce this phenomenon. The adhesion force between the gas bubble and the electrode can be used as a benchmark to evaluate the ease of bubble detachment. Several previous studies have explored this topic in other research fields, for instance, Ren et al. demonstrate that a modification of nickel electrode surfaces with nanocone structures increases the surface roughness, thereby enhancing gas bubble detachment and improving efficiency in high-rate alkaline water splitting [3]. However, further in-depth investigation is still needed in the field of PEMWE.In this work, we present the results of adhesion force measurements performed on proton conductive membranes, catalyst electrodes and MEAs. Experiments were carried out with a tensiometer using water and oxygen as analytes. It was shown that parameters such as the membrane thickness, catalyst material, loading, structure and different treatment procedures of the analyzed sample can have a significant effect on the adhesion force.Funding: This work was financially supported by the Bundesministerium für Bildung und Forschung (BMBF): Wasserstoff - Leitprojekt H2Giga, Teilvorhaben DERIEL (project number 03HY122C), SEGIWA (project number 03HY121B).[1] Wang, Y., Pang, Y., Xu, H., Martinez, A. & Chen, K. S. Energy Environ. Sci. 2022, 15, 2288–2328.[2] Yuan, S. et al. Prog. Energy Combust. Sci. 2023, 96, 101075.[3] Q. Ren, L. Feng, C. Ye, X. Xue, D. Lin, S. Eisenberg, T. Kou, E. B. Duoss, C. Zhu and Y. Li, Adv. Energy Mater. 2023, 13, 2302073.
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001050746 7001_ $$0P:(DE-Juel1)196067$$aFröhlich, Kristina$$b1
001050746 7001_ $$0P:(DE-Juel1)191359$$aKarl, André$$b2
001050746 7001_ $$0P:(DE-Juel1)161579$$aJodat, Eva$$b3
001050746 7001_ $$0P:(DE-Juel1)156123$$aEichel, Rüdiger-A.$$b4$$ufzj
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