Parameter characterization of HT-PEMFC stack with a non-isothermal 3D model

12 figures, 10 tables.-- Part of the special issue VIII Symposium on Hydrogen, Fuel Cells and Advanced Batteries - HYCELTEC 2022, VIII Symposium on Hydrogen, Fuel Cells and Advanced Batteries Buenos Aires, July 10-13, 2022.-- © 2023. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/This paper proposes a methodology for characterizing electrochemical parameters in non-isothermal three-dimensional (3D) simulation models of fuel cell stacks. The proposed methodology involves utilizing only easily measurable construction and non-invasive operational data. In order to achieve a reasonable computational cost, an iterative method developed on various 3D computational domains is combined with a genetic algorithm optimization technique. The effectiveness of the methodology is demonstrated through its application on a real scale 40-cell high temperature PEM fuel cell (HTPEMFC) stack, with the results indicating good agreement between the model and experimental data. This approach has the potential to significantly reduce the computational cost of optimizing fuel cell designs while still maintaining accuracy.This research is part of the CSIC program for the Spanish Recovery, Transformation and Resilience Plan funded by the Recovery and Resilience Facility of the European Union, established by the Regulation (EU) 2020/2094. Support of the CSIC Interdisciplinary Thematic Platform (PTI+) Transición Energética Sostenible+ (PTI-TRANSENER+) is acknowledged. Funding provided by the Spanish Ministry of Science and Innovation under project MAFALDA (PID2021-126001OB-C32, MCIN/AEI/10.13039/501100011033), as well as the support of the Regional Government of Aragon to GCC are also acknowledged.Peer reviewe