20.500.12556/RUL-170956 Advanced State-of-X diagnostics of proton exchange membrane fuel cells enabled by the multi-scale modeling framework Simultaneous optimization of efficiency and durability of proton exchange membrane fuel cells (PEMFC) calls for advanced State-of-X (SoX) diagnostics. Novel SoX functionalities are made possible by the knowledge of internal states of PEMFCs and parameters associated with the rate and efficiency of reactions as well as of transport mechanisms. To address this challenging task, we propose innovative SoX diagnostics method based on a computationally efficient multi-scale simulation framework for PEMFCs, parameter identification techniques and methods for assessing uniqueness of parameter identification. Proposed state-of-the-art simulation framework incorporates advanced submodel on spatially resolved dynamics of liquid water and newly added submodel considering the impact of the gas crossover effects on mixed potentials. Results demonstrate capability of the innovative SoX diagnostics method to perform detailed diagnostics of internal states of the PEMFC and to pinpoint degradation-imposed variation of parameters which are interlinked with catalyst activity, membrane losses and gas diffusion layer losses. fuel cells proton exchange membrane fuel cells modeling degradations diagnostics true false true Angleški jezik Ni določen Članek v reviji 2025-07-23 10:23:37 2025-07-23 10:23:43 2026-06-12 10:09:44 0000-00-00 00:00:00 2025 0 0 Str. 1359-1371 Vol. 141 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.43 0360-3199 10.1016/j.ijhydene.2025.03.202 231917827 Katrasnik,_Kravos_-_Advanced_State-of-X.pdf Katrasnik,_Kravos_-_Advanced_State-of-X.pdf 1 7623EC9DD23901094F0FE7AB1EC83BA0 795cf84909a140a5453a23a9192d52220c5753a009a936bde8577de6808dcdf0 184aab5e-679f-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=213254 https://www.sciencedirect.com/science/article/pii/S0360319925013163 1 54e27627-679e-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=213253 Fakulteta za strojništvo 0 0 0