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Modeling and Simulation of the Degradation of Perfluorinated Ion-Exchange Membranes in PEM Fuel Cells
Open accessAbstract
A polymer electrolyte membrane (PEM) fuel cell model that incorporates chemical degradation in perfluorinated sulfonic acid membranes is developed. The model is based on conservation principles and includes a detailed description of the transport phenomena. A degradation submodel describes the formation of hydrogen peroxide via distinct mechanisms in the cathode and anode, together with the subsequent formation of radicals via Fenton reactions involving metal-ion impurities. The radicals participate in the decomposition of reactive end groups to form carboxylic acid, hydrogen fluoride, and . Degradation proceeds through unzipping of the polymer backbone and cleavage of the side chains. Simulations are presented, and the numerical code is shown to be extremely time-efficient. Known trends with respect to operating conditions are qualitatively captured, and the exhibited behavior is shown to be robust to changes in the rate constants. The feasibility of a chemical degradation mechanism based on peroxide and radical formation is discussed.
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In the citing paper
“This model did not consider the consequences of degradation on relevant performance properties of the membrane, however.”
From Modelling the Proton-Conductive Membrane in Practical Polymer Electrolyte Membrane Fuel Cell (PEMFC) Simulation: A Review (2020) · cites this paper as [186]
In the citing paper
“These models were extended by Shah et al. to incorporate the full chemical mechanism for the Fenton reactions and consequent ‘unzipping’ of the membrane structure [186].”
From Modelling the Proton-Conductive Membrane in Practical Polymer Electrolyte Membrane Fuel Cell (PEMFC) Simulation: A Review (2020) · cites this paper as [186]
In the citing paper
“In this model, independent concentrations are assigned to several constituent repeated moieties within the polymer structure (carboxylic acid, weak polymer end groups, side chains, CF2); as these concentrations evolve under the degradation model, they allow a prediction of spatial and temporal evolution of degradation sites.”
From Modelling the Proton-Conductive Membrane in Practical Polymer Electrolyte Membrane Fuel Cell (PEMFC) Simulation: A Review (2020) · cites this paper as [186]
Citations
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Ge, S., Li, X., Yi, B., & Hsing, I.-M. (2005) · Journal of The Electrochemical Society · doi:10.1149/1.1899263 · Cited by 288
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Cited by
Sorted by citations
Dickinson, E. J. F., & Smith, G. (2020) · Membranes · doi:10.3390/membranes10110310 · Cited by 109
Metadata
- Authors
- Shah, A. A., Ralph, T. R., & Walsh, F. C.
- Affiliations
- University of Southampton (GB)
- Johnson Matthey (United Kingdom) (GB)
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 2009
- Volume
- 156
- Issue
- 4
- Pages
- B465
- ISSN
- 0013-4651 (ISSN-L)
- OpenAlex
- W2098163852
- Cited by
- 149
- References
- 2
- Citations by year
- 2026: 8 · 2025: 13 · 2024: 7 · 2023: 7 · 2022: 5 · 2021: 9 · 2020: 11 · 2019: 6 · 2018: 13 · 2017: 12 · 2016: 7 · 2015: 7 · 2014: 9 · 2013: 4 · 2012: 6
- FWCI
- 8.20
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of The Electrochemical Society (publishedVersion)
- ePrints Soton (University of Southampton) (acceptedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
- Physical Sciences › Chemical Engineering › Filtration and Separation › Membrane-based Ion Separation Techniques
- Physical Sciences › Materials Science › Materials Chemistry › Advancements in Solid Oxide Fuel Cells
- Keywords
- proton exchange membrane fuel cells, membrane degradation, perfluorosulfonic acid membranes, hydrogen peroxide production, Fenton reaction, metal ion impurities, radical formation, side-chain cleavage, carboxylic acid formation, hydrogen fluoride formation, degradation modeling, transport phenomena
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