The DOI matches its Crossref record; 18 of the 18 references it cites were found in a registry or an index.
A Critical Revision of the Nano‐Morphology of Proton Conducting Ionomers and Polyelectrolytes for Fuel Cell Applications
Abstract
A few aspects of the nano‐morphology of hydrated Nafion and other ionomers and polyelectrolytes in their acid form are revisited by examining the evolution of small angle X‐ray scattering (SAXS) data which are recorded for a wide range of water volume fractions (Φwater ≈ 7–56 vol%). A consistency check with the recent “parallel cylinder model” discloses that this is most likely biased by a large uncertainty of the experimentally determined water content. We rather find our data to be consistent with locally flat and narrow (around 1 nm) water domains. The formation of relatively thin water “films” is suggested to be a common feature of many ionomers and polyelectrolytes, and the underlying driving force is most likely electrostatics within these highly dissociated systems. The water films may act as a charged (e.g., with positive protonic charge carriers) “glue”, keeping together the oppositely charged polymer structures. While this interaction tends to produce flat morphologies, the formation process is suggested to be constraint by limited conformational degrees of freedom of the corresponding polymer and the interactions between polymer backbones. This may leave severe tortuosities on larger scales which depend on the sample history (including swelling, de‐swelling, aging, stretching, and pressing).
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Cites
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New Insights into Perfluorinated Sulfonic-Acid Ionomers
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CO 2 electrolysis to multicarbon products at activities greater than 1 A cm −2
García de Arquer, F. P., Dinh, C.-T., Ozden, A., Wicks, J., McCallum, C., Kirmani, A. R., Nam, D.-H., Gabardo, C., Seifitokaldani, A., Wang, X., et al. (2020) · Science · doi:10.1126/science.aay4217 · Cited by 1,517
Magnetic field alignment of stable proton-conducting channels in an electrolyte membrane
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Nanocrack-regulated self-humidifying membranes
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Pt‐Based Nanocrystal for Electrocatalytic Oxygen Reduction
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Metadata
- Authors
- Kreuer, K., & Portale, G.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2013-06-03
- Volume
- 23
- Issue
- 43
- Pages
- 5390-5397
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W1970087463
- Cited by
- 347
- References
- 18
- FWCI
- 16.38
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kreuer, K., & Portale, G. (2013). A Critical Revision of the Nano‐Morphology of Proton Conducting Ionomers and Polyelectrolytes for Fuel Cell Applications. Advanced Functional Materials. https://doi.org/10.1002/adfm.201300376
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