ArticleAngewandte Chemie (International ed. in English)2016
Nanoscale Distribution of Sulfonic Acid Groups Determines Structure and Binding of Water in Nafion Membranes.
Article in Angewandte Chemie (International ed. in English), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 55 citations in OpenAlex.
- Highly phase-separated alternating copolymer of alkyl vinyl ether and sulfonic acid group-containing trifluoro vinyl ether.RSC advances · 2025Article
- Sulfonated Styrene-Grafted Polyvinylidene Fluoride Copolymers for Proton Exchange Membranes for AQDS/Bromine Redox Flow Batteries.Macromolecular rapid communications · 2025Article
- SAXS Investigation of the Effect of Freeze/Thaw Cycles on the Nanostructure of NafionPolymers · 2022Article
- A State-of-Art on the Development of Nafion-Based Membrane for Performance Improvement in Direct Methanol Fuel Cells.Membranes · 2022Review
- COScience (New York, N.Y.) · 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
- 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
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The connection between the nanoscale structure of two chemically equivalent, yet morphologically distinct Nafion fuel-cell membranes and their macroscopic chemical properties is demonstrated. Quantification of the chemical interactions between water and Nafion reveals that extruded membranes have smaller water channels with a reduced sulfonic acid head group density compared to dispersion-cast membranes. As a result, a disproportionally large amount of non-bulk water molecules exists in extruded membranes, which also exhibit larger proton conductivity and larger water mobility compared to cast membranes. The differences in the physicochemical properties of the membranes, that is, the chemical constitution of the water channels and the local water structure, and the accompanying differences in macroscopic water and proton transport suggest that the chemistry of nanoscale channels is an important, yet largely overlooked parameter that influences the functionality of fuel-cell membranes.
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