20.500.12556/RUL-184805 Spatially and temporally resolved stainless steel bipolar plate degradation model for PEMFCs Predicting multilayer oxide growth on stainless-steel bipolar plates (BPPs) in proton exchange membrane fuel cells (PEMFCs) remains challenging because of the complex interplay between electrochemical and transport processes. To address this challenge, we present a BPP degradation model that accounts for the competitive growth of chromium and iron oxide layers and couple it with a real-time-capable, multi-scale, physics-based PEMFC performance model. The results demonstrate that the proposed framework reproduces experimentally observed oxide-thickness evolution and final composition from ToF-SIMS depth profiling with monolayer-level agreement within the uncertainty of the reconstructed literature dataset, while capturing oxygen-vacancy generation, diffusion, and annihilation across the multilayer passive film. Furthermore, the coupled framework enables real-time prediction of spatially non-uniform oxide growth under realistic PEMFC operating conditions, revealing a strong dependence of corrosion dynamics on local cell conditions. The developed framework therefore supports mechanistic interpretation of BPP degradation and provides a basis for future model-based monitoring of stainless-steel BPP degradation in PEMFC systems. proton exchange membrane fuel cell modeling multilayer oxide growth stainless steel bipolar plates spatial non-uniformity degradation gorivne celice protonske izmenjevalne membrane modeliranje rast večplastnih oksidov bipolarne plošče iz nerjavečega jekla prostorska neenakomernost degradacija true false true Angleški jezik Slovenski jezik Članek v reviji 2026-07-15 10:40:21 2026-07-15 10:40:30 2026-07-16 04:35:49 0000-00-00 00:00:00 2026 0 0 17 str. Vol. 256, art. 156386 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 542.943:621.352.6 0360-3199 10.1016/j.ijhydene.2026.156386 284864515 Kravos...Spatially_and_temporally....pdf Kravos...Spatially_and_temporally....pdf 1 D636F64AB7CE2E7B6BC1385658C438E1 947690783a16e76918667c2be763cf2e9bfaab4deb6f1ec772af797f31a06fe7 684f942c-8029-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=240094 https://www.sciencedirect.com/science/article/pii/S0360319926030247 1 a99c1ecc-8028-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=240058 Fakulteta za strojništvo 0 0 0