Preparation and characterization of highly stable protic-ionic-liquid membranes
A highly durable proton exchange membranes (PEM)s based on covalently supported ionic liquid (IL) bearing sulfonic acid imidazolium groups were successfully fabricated. The membrane preparation involved radiation induced grafting of 1-vinyl imidazole (1-VIm) onto poly(ethylene-co-tetraflouroethene)...
| Main Authors: | Zakeri, M., Abouzari-Lotf, E., Nasef, M.M., Ahmad, A., Ripin, A., Ting, T.M., Sithambaranathan, P. |
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| Format: | Article |
| Institution: | Universiti Teknologi Petronas |
| Record Id / ISBN-0: | utp-eprints.21368 / |
| Published: |
Elsevier Ltd
2018
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| Online Access: |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046126974&doi=10.1016%2fj.ijhydene.2018.04.015&partnerID=40&md5=b8c22cec13f34ca2fbf6130bc1a66b06 http://eprints.utp.edu.my/21368/ |
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| Summary: |
A highly durable proton exchange membranes (PEM)s based on covalently supported ionic liquid (IL) bearing sulfonic acid imidazolium groups were successfully fabricated. The membrane preparation involved radiation induced grafting of 1-vinyl imidazole (1-VIm) onto poly(ethylene-co-tetraflouroethene) (ETFE) film, followed by covalent immobilization of 3-sulfopropyl and subsequent treatment with trifluoromethanesulfonic acid. The ionic conductivity of the supported IL membranes was increased with the increase in the concentration of IL and reached a maximum value of 138 mS cm�1 in a fully hydrated state with an ion exchange capacity of 4.82 mmol g�1 that is higher than Nafion with a similar thickness. The membranes displayed excellent chemical and mechanical stability. In addition, the dimensional and thermal stability of supported IL-membranes were significantly higher than commercial Nafion membranes. © 2018 Hydrogen Energy Publications LLC |
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