Preparation and characterization of highly stable protic-ionic-liquid membranes

Zakeri, M. and Abouzari-Lotf, E. and Nasef, M.M. and Ahmad, A. and Ripin, A. and Ting, T.M. and Sithambaranathan, P. (2018) Preparation and characterization of highly stable protic-ionic-liquid membranes. International Journal of Hydrogen Energy .

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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

Item Type:Article
Impact Factor:cited By 0; Article in Press
Uncontrolled Keywords:Chemical stability; Dimensional stability; Ethylene; Film preparation; Grafting (chemical); Ion exchange; Ion exchange membranes; Ionic liquids; Liquid membranes; Mechanical stability; Thermodynamic stability, Covalent immobilization; Ion exchange capacity; Poly(vinyl imidazole); Protic ionic liquids; Proton-exchange membrane; Radiation-induced grafting; Supported ionic liquids; Trifluoromethane sulfonic acid, Proton exchange membrane fuel cells (PEMFC)
ID Code:21368
Deposited By: Ahmad Suhairi
Deposited On:25 Sep 2018 06:36
Last Modified:25 Sep 2018 06:36

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