ArticleAngewandte Chemie (International ed. in English)2015
Nanometer-scale water- and proton-diffusion heterogeneities across water channels in polymer electrolyte membranes.
Article in Angewandte Chemie (International ed. in English), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed, 47 citations in OpenAlex.
- Dehydration entropy drives liquid-liquid phase separation by molecular crowding.Communications chemistry · 2020Article
- Correlated interfacial water transport and proton conductivity in perfluorosulfonic acid membranes.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- Thermally triggered polyrotaxane translational motion helps proton transfer.Nature communications · 2018Article
- Water sub-diffusion in membranes for fuel cells.Scientific reports · 2017Article
- Probing the neutralization behavior of zwitterionic monomer-containing dental adhesive.Dental materials : official publication of the Academy of Dental Materials · 2017Article
- Nanoscale Distribution of Sulfonic Acid Groups Determines Structure and Binding of Water in Nafion Membranes.Angewandte Chemie (International ed. in English) · 2016Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
Abstract
Nafion, the most widely used polymer for electrolyte membranes (PEMs) in fuel cells, consists of a fluorocarbon backbone and acidic groups that, upon hydration, swell to form percolated channels through which water and ions diffuse. Although the effects of the channel structures and the acidic groups on water/ion transport have been studied before, the surface chemistry or the spatially heterogeneous diffusivity across water channels has never been shown to directly influence water/ion transport. By the use of molecular spin probes that are selectively partitioned into heterogeneous regions of the PEM and Overhauser dynamic nuclear polarization relaxometry, this study reveals that both water and proton diffusivity are significantly faster near the fluorocarbon and the acidic groups lining the water channels than within the water channels. The concept that surface chemistry at the (sub)nanometer scale dictates water and proton diffusivity invokes a new design principle for PEMs.
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Registered trials
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