%0 Conference Paper
%A Rameker, Robert
%A Poc, J.-P.
%A Jovanovic, S.
%A Oeß, C.
%A Liu, Jialiang
%A Speer, S.
%A Fröhlich, K.
%A Daniel, D. T.
%A Park, J.
%A Basak, S.
%A Karl, A.
%A Jodat, E.
%A Eichel, R.-A.
%A Granwehr, J.
%T A novel perspective on “Fenton-like” degradation studies on proton exchange membranes
%I RWTH Aachen
%M FZJ-2025-05006
%D 2025
%X Understanding membrane degradation under realistic conditions is critical to improve the lifetime and commercial viability of PEM electrolyzers. This study re-evaluates conventional ex-situ Fenton degradation tests, which simulate long-term radical-driven membrane damage using high concentrations of Fe²⁺ and H₂O₂. This study focuses on evaluating their relevance to in-operando degradation mechanisms and to gain an in-depth understanding of morphological and chemical degradation processes. By combining microscopic, spectroscopic, and electrochemical analyses, it is observed that morphological damage from oxygen evolution, rather than radical-induced chain scission, dominates under “Fenton-like” AST conditions. This challenges current AST design and motivates revised protocols aligned with true PEM electrolyzer operation.
%B H2giga Abschlusskonferenz
%C 2 Jul 2025 - 3 Jul 2025, Frankfurt (Germany)
Y2 2 Jul 2025 - 3 Jul 2025
M2 Frankfurt, Germany
%F PUB:(DE-HGF)24
%9 Poster
%U https://juser.fz-juelich.de/record/1048905