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Cited by 72Fuel Cells and Related MaterialsMembrane-based Ion Separation TechniquesAdvancements in Solid Oxide Fuel Cells

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Understanding the Effects of Compression and Constraints on Water Uptake of Fuel-Cell Membranes

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Kusoglu, Ahmet, Kienitz, Brian L., Weber, Adam Z.·2011·Journal of The Electrochemical Society
DOI 10.1149/2.097112jes
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Abstract

Accurate characterization of polymer-electrolyte fuel cells (PEFCs) requires understanding the impact of mechanical and electrochemical loads on cell components. An essential aspect of this relationship is the effect of compression on the polymer membrane's water-uptake behavior and transport properties. However, there is limited information on the impact of physical constraints on membrane properties. In this paper, we investigate both theoretically and experimentally how the water uptake of Nafion membrane changes under external compression loads. The swelling of a compressed membrane is modeled by modifying the swelling pressure in the polymer backbone which relies on the changes in the microscopic volume of the polymer. The model successfully predicts the water content of the compressed membrane measured through in-situ swelling-compression tests and neutron imaging. The results show that external mechanical loads could reduce the water content and conductivity of the membrane, especially at lower temperatures, higher humidities, and in liquid water. The modeling framework and experimental data provide valuable insight for the swelling and conductivity of constrained and compressed membranes, which are of interest in electrochemical devices such as batteries and fuel cells.

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  • Both Kusoglu et al. and Klika et al. have argued that the influence of pressure on contact resistances will have a greater practical impact than variation in uptake or transport due to swelling phenomena.

    “Both Kusoglu et al. and Klika et al. have argued that the influence of pressure on contact resistances will have a greater practical impact than variation in uptake or transport due to swelling phenomena [63,152].”

    From Modelling the Proton-Conductive Membrane in Practical Polymer Electrolyte Membrane Fuel Cell (PEMFC) Simulation: A Review (2020) · cites this paper as [152]

  • Kusoglu et al. used a Flory-Huggins model for sorption thermodynamics together with the Mori-Tanaka model for bulk modulus of a two-phase material to provide an overall sorption isotherm under pressure, with experimental corroboration.

    “Kusoglu et al. used a Flory–Huggins model for the sorption thermodynamics together with the Mori-Tanaka model for bulk modulus of a two-phase material, in order to provide an overall sorption isotherm under pressure, with experimental corroboration [152].”

    From Modelling the Proton-Conductive Membrane in Practical Polymer Electrolyte Membrane Fuel Cell (PEMFC) Simulation: A Review (2020) · cites this paper as [152]

  • Both experimental and theoretical studies have implicated the load due to membrane swelling in a lowering of the effective water content of the membrane.

    “Both experimental and theoretical studies have implicated the load due to membrane swelling in a lowering of the effective water content of the membrane [128,148,152], with an experimental cap on water uptake of λmax = 6.5 reported in one case [128].”

    From Modelling the Proton-Conductive Membrane in Practical Polymer Electrolyte Membrane Fuel Cell (PEMFC) Simulation: A Review (2020) · cites this paper as [152]

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Metadata

Authors
Kusoglu, A., Kienitz, B. L., & Weber, A. Z.
Affiliations
Lawrence Berkeley National Laboratory (US)
ORCID
Venue
Journal of The Electrochemical Society
Publisher
The Electrochemical Society
Published
2011
Volume
158
Issue
12
Pages
B1504
ISSN
0013-4651 (ISSN-L)
DOI
10.1149/2.097112jes
OpenAlex
W2091750475
Cited by
72
References
3
Citations by year
2026: 4 · 2025: 1 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 6 · 2020: 5 · 2019: 9 · 2018: 6 · 2017: 4 · 2016: 3 · 2015: 7 · 2014: 10 · 2013: 4 · 2012: 5
FWCI
4.26
Type
journal article
Language
en
Open access
Locations
  • Journal of The Electrochemical Society (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • University of North Texas Digital Library (University of North Texas) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • U.S. Department of Energy (-AC02-05CH11231, 05CH11231, DE AC02 05CH11231, DE-AC02-)
  • Office of Energy Efficiency and Renewable Energy
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
Nafion membrane, proton exchange membrane fuel cells, membrane compression, water absorption, membrane swelling, swelling pressure, mechanical constraints, proton conductivity, neutron imaging, liquid water transport

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