TY  - CONF
AU  - Rameker, Robert
AU  - Poc, J.-P.
AU  - Jovanovic, S.
AU  - Oeß, C.
AU  - Liu, Jialiang
AU  - Speer, S.
AU  - Fröhlich, K.
AU  - Daniel, D. T.
AU  - Park, J.
AU  - Basak, S.
AU  - Karl, A.
AU  - Jodat, E.
AU  - Eichel, R.-A.
AU  - Granwehr, J.
TI  - A novel perspective on “Fenton-like” degradation studies on proton exchange membranes
PB  - RWTH Aachen
M1  - FZJ-2025-05006
PY  - 2025
AB  - 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.
T2  - H2giga Abschlusskonferenz
CY  - 2 Jul 2025 - 3 Jul 2025, Frankfurt (Germany)
Y2  - 2 Jul 2025 - 3 Jul 2025
M2  - Frankfurt, Germany
LB  - PUB:(DE-HGF)24
UR  - https://juser.fz-juelich.de/record/1048905
ER  -