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Influence of catalyst agglomerate internal structure on PEFC performance investigated by a multiscale numerical model

Tian, J.; Ismail, M. S.; Hughes, K. J.; Ingham, D. B.; Ma, L.; Pourkashanian, M.

Authors

J. Tian

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Dr Mohammed Ismail m.s.ismail@hull.ac.uk
Lecturer in Chemical Engineering - Hydrogen and Fuel Cell Technologies

K. J. Hughes

D. B. Ingham

L. Ma

M. Pourkashanian



Abstract

A multiscale modeling framework, which consists of catalyst agglomerate scale and fuel scale models, has been developed for polymer electrolyte fuel cells (PEFCs). The performance of the agglomerate model is numerically linked to the fuel cell model by employing an interpolation function that represents the performance of the agglomerate. This framework unlocks the restrictions associated with the conventional agglomerate PEFC model by allowing the user to freely investigate the impact of the structure and the composition of the catalyst agglomerate. Thus the impact of the internal structure of the catalyst agglomerate on the fuel cell performance has been investigated. The results have shown that the fuel cell performs better with catalyst agglomerates embodying “separate” active clusters and this impact becomes more profound as the size of the agglomerate increases. Also, it has been shown that the performance of the catalyst agglomerate becomes significantly better as the agglomerate size decreases. These outcomes and other outcomes have been presented and fully discussed.

Citation

Tian, J., Ismail, M. S., Hughes, K. J., Ingham, D. B., Ma, L., & Pourkashanian, M. (2024). Influence of catalyst agglomerate internal structure on PEFC performance investigated by a multiscale numerical model. Fuel, 371, pt.A, Article 131862. https://doi.org/10.1016/j.fuel.2024.131862

Journal Article Type Article
Acceptance Date May 10, 2024
Online Publication Date May 17, 2024
Publication Date Sep 1, 2024
Deposit Date May 24, 2024
Publicly Available Date May 28, 2024
Journal Fuel
Print ISSN 0016-2361
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 371, pt.A
Article Number 131862
DOI https://doi.org/10.1016/j.fuel.2024.131862
Keywords Polymer electrolyte fuel cells; Catalyst layer; Multiscale model; Agglomerate model
Public URL https://hull-repository.worktribe.com/output/4674442

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