Proton Transport in Hierarchical-Structured Nafion Membranes: A NMR Study
© 2017 American Chemical Society. It is known that hierarchical structure plays a key role in many unique material properties such as self-cleaning effect of lotus leaves and the antifogging property of the compound eyes of mosquitoes. This study reports a series of highly ordered mesoporous Nafion...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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American Chemical Society
2017
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| Online Access: | http://purl.org/au-research/grants/arc/DP150102025 http://hdl.handle.net/20.500.11937/66351 |
| _version_ | 1848761301332918272 |
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| author | Yang, H. Zhang, Jin Li, J. Jiang, San Ping Forsyth, M. Zhu, H. |
| author_facet | Yang, H. Zhang, Jin Li, J. Jiang, San Ping Forsyth, M. Zhu, H. |
| author_sort | Yang, H. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2017 American Chemical Society. It is known that hierarchical structure plays a key role in many unique material properties such as self-cleaning effect of lotus leaves and the antifogging property of the compound eyes of mosquitoes. This study reports a series of highly ordered mesoporous Nafion membranes with unique hierarchical structural features at the nanometer scale. Using NMR, we show for the first time that, at low RH conditions, the proton in the ionic domains migrates via a surface diffusion mechanism and exhibits approximately 2 orders of magnitude faster transport than that in the nanopores, whereas the nanopores play a role of reservoir and maintain water and thereby conductivity at higher temperature and lower humidities. Thereby creating hierarchical nanoscale structures is a feasible and promising strategy to develop PEMs that would enable efficient electrochemical performance in devices such as fuel cells, even in the absence of high humidity and at elevated temperatures. |
| first_indexed | 2025-11-14T10:29:30Z |
| format | Journal Article |
| id | curtin-20.500.11937-66351 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:29:30Z |
| publishDate | 2017 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-663512022-10-12T06:59:25Z Proton Transport in Hierarchical-Structured Nafion Membranes: A NMR Study Yang, H. Zhang, Jin Li, J. Jiang, San Ping Forsyth, M. Zhu, H. © 2017 American Chemical Society. It is known that hierarchical structure plays a key role in many unique material properties such as self-cleaning effect of lotus leaves and the antifogging property of the compound eyes of mosquitoes. This study reports a series of highly ordered mesoporous Nafion membranes with unique hierarchical structural features at the nanometer scale. Using NMR, we show for the first time that, at low RH conditions, the proton in the ionic domains migrates via a surface diffusion mechanism and exhibits approximately 2 orders of magnitude faster transport than that in the nanopores, whereas the nanopores play a role of reservoir and maintain water and thereby conductivity at higher temperature and lower humidities. Thereby creating hierarchical nanoscale structures is a feasible and promising strategy to develop PEMs that would enable efficient electrochemical performance in devices such as fuel cells, even in the absence of high humidity and at elevated temperatures. 2017 Journal Article http://hdl.handle.net/20.500.11937/66351 10.1021/acs.jpclett.7b01557 http://purl.org/au-research/grants/arc/DP150102025 http://purl.org/au-research/grants/arc/DP150102044 American Chemical Society restricted |
| spellingShingle | Yang, H. Zhang, Jin Li, J. Jiang, San Ping Forsyth, M. Zhu, H. Proton Transport in Hierarchical-Structured Nafion Membranes: A NMR Study |
| title | Proton Transport in Hierarchical-Structured Nafion Membranes: A NMR Study |
| title_full | Proton Transport in Hierarchical-Structured Nafion Membranes: A NMR Study |
| title_fullStr | Proton Transport in Hierarchical-Structured Nafion Membranes: A NMR Study |
| title_full_unstemmed | Proton Transport in Hierarchical-Structured Nafion Membranes: A NMR Study |
| title_short | Proton Transport in Hierarchical-Structured Nafion Membranes: A NMR Study |
| title_sort | proton transport in hierarchical-structured nafion membranes: a nmr study |
| url | http://purl.org/au-research/grants/arc/DP150102025 http://purl.org/au-research/grants/arc/DP150102025 http://hdl.handle.net/20.500.11937/66351 |