Advanced methodology for emulating local operating condi-tions in Proton Exchange Membrane Fuel Cells
Résumé
This work focuses on the study of operating heterogeneities on large MEAs active surface area in PEMFC stack. An advanced methodology is developed, aiming at the prediction of local operating conditions such as temperature, relative humidity and species concentration. A physic-based pseudo-3D model developed under COMSOL Multiphysics allows to observe heterogeneities over the entire active surface area. Once predicted, these local operating conditions are experimentally emulated thanks to a differential cell to provide the local polarization curves and electrochemical impedance spectra. Coupling simulation and experimental, 37 local operating conditions are em-ulated to examine the degree of correlation between local operating conditions and PEMFC cell performances. Researchers and engineers can use the polarization curves and Electrochemical Impedance Spectroscopy diagrams to fit the variables of an empirical model or validating the re-sults of a theoretical model.
Domaines
Génie des procédésOrigine | Fichiers produits par l'(les) auteur(s) |
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