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Thermodynamics and Proton Transport in Nafion
Abstract
A comprehensive pore transport model is proposed to describe proton diffusion within Nafion at various hydration levels by incorporating effects of water uptake and various proton transport mechanisms, namely, proton hopping along surface, Grotthuss diffusion, and ordinary mass diffusion of hydronium ions. The diffusion coefficients are predicted within a general random walk framework. The proton conductivity in contact with water vapor is accurately predicted as a function of relative humidity without any fitted parameters, considering the sorption isotherm proposed in the companion paper (Part I). A maximum conductivity in contact with liquid water is also predicted by the model for equivalent weight between 900 and 1000, in good agreement with the experimental measurements. The modeling framework could be extended to other proton conducting electrolytes for fuel cell applications. © 2005 The Electrochemical Society. All rights reserved.
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Cites
On the development of proton conducting polymer membranes for hydrogen and methanol fuel cells
Kreuer, K. D. (2001) · Journal of Membrane Science · doi:10.1016/s0376-7388(00)00632-3 · Cited by 2,969
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Kusoglu, A., & Weber, A. Z. (2017) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00159 · Cited by 2,432
Parallel cylindrical water nanochannels in Nafion fuel-cell membranes
Schmidt-Rohr, K., & Chen, Q. (2008) · Nature Materials · doi:10.1038/nmat2074 · Cited by 1,371
Bose, S., Kuila, T., Nguyen, T. X. H., Kim, N. H., Lau, K.-T., & Lee, J. H. (2011) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2011.01.003 · Cited by 934
Review of electrochemical ammonia production technologies and materials
Giddey, S., Badwal, S. P. S., & Kulkarni, A. (2013) · International Journal of Hydrogen Energy · doi:10.1016/j.ijhydene.2013.09.054 · Cited by 886
Towards membrane-electrode assembly systems for CO2 reduction: a modeling study
Weng, L.-C., Bell, A. T., & Weber, A. Z. (2019) · Energy & Environmental Science · doi:10.1039/c9ee00909d · Cited by 452
Metadata
- Authors
- Choi, P., Jalani, N. H., & Datta, R.
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 2005
- Volume
- 152
- Issue
- 3
- Pages
- E123
- ISSN
- 0013-4651 (ISSN-L)
- OpenAlex
- W2165346850
- Cited by
- 440
- References
- 1
- FWCI
- 11.12
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
