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Multilamellar Interface Structures in Nafion
Abstract
Neutron reflectometry measurements show that lamellar structures composed of thin alternating water-rich and Nafion-rich layers exist at the interface between SiO 2 and the hydrated Nafion film. Lamellae thickness and number of layers increase with humidity. Some lamellae remain in the film after dehydration. Multilayer lamellae are not observed for Nafion on Au or Pt surfaces. Instead, a thin partially hydrated single interfacial layer occurs and decreases in thickness to a few angstroms as humidity is reduced to zero. The absorption isotherm of the rest of the Nafion film is similar to that of bulk Nafion for all three surfaces investigated. The observed interfacial structures have implications for the performance, reliability, and improvements of fuel cell proton exchange membranes and membrane electrode assemblies.
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Citations
Cites
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
Water Uptake of Perfluorosulfonic Acid Membranes from Liquid Water and Water Vapor
Hinatsu, J. T., Mizuhata, M., & Takenaka, H. (1994) · Journal of The Electrochemical Society · doi:10.1149/1.2054951 · Cited by 518
Transport in Polymer-Electrolyte Membranes
Weber, A. Z., & Newman, J. (2003) · Journal of The Electrochemical Society · doi:10.1149/1.1580822 · Cited by 411
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New Insights into Perfluorinated Sulfonic-Acid Ionomers
Kusoglu, A., & Weber, A. Z. (2017) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00159 · Cited by 2,432
Stable Cycling of Lithium Metal Batteries Using High Transference Number Electrolytes
Lu, Y., Tikekar, M., Mohanty, R., Hendrickson, K., Ma, L., & Archer, L. A. (2015) · Advanced Energy Materials · doi:10.1002/aenm.201402073 · Cited by 377
DeCaluwe, S. C., Baker, A. M., Bhargava, P., Fischer, J. E., & Dura, J. A. (2018) · Nano Energy · doi:10.1016/j.nanoen.2018.01.008 · Cited by 122
Self-citationAnalysis of Water Adsorption and Condensation in Catalyst Layers for Polymer Electrolyte Fuel Cells
Mashio, T., Sato, K., & Ohma, A. (2014) · Electrochimica Acta · doi:10.1016/j.electacta.2014.07.058 · Cited by 48
Metadata
- Authors
- Dura, J. A., Murthi, V. S., Hartman, M., Satija, S. K., & Majkrzak, C. F.
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-06-12
- Volume
- 42
- Issue
- 13
- Pages
- 4769-4774
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W1984724903
- Cited by
- 177
- References
- 3
- FWCI
- 6.34
- Type
- journal article
- Language
- en
- Open access
- closed
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- Dura, J. A., Murthi, V. S., Hartman, M., Satija, S. K., & Majkrzak, C. F. (2009). Multilamellar Interface Structures in Nafion. Macromolecules. https://doi.org/10.1021/ma802823j
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