Alkaline anion-exchange radiation-grafted membranes for possible electrochemical application in fuel cells
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Danks, TN, Slade, RCT and Varcoe, JR (2003) Alkaline anion-exchange radiation-grafted membranes for possible electrochemical application in fuel cells J MATER CHEM, 13 (4). 712 - 721. ISSN 0959-9428
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Abstract
Vinylbenzyl chloride was grafted onto PVDF and FEP polymer films using the radiation-grafting methodology. Subsequent reaction with trimethylamine and ion-exchange with potassium hydroxide yields alkaline anion-exchange membranes that are capable of conducting hydroxide ions; such membranes may be suitable for use in low temperature direct methanol fuel cells for portable devices. The PVDF based materials underwent an undesirable degradation and were found to be less suitable for this class of membrane. FEP-based materials exhibited superior structural stability, conductivities up to 0.02 S cm-1 at room temperature, and good retention of ion-exchange capacities when treated in water at 60°C.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PROTON-CONDUCTING MEMBRANES, OPEN-CIRCUIT VOLTAGE, SOLID-STATE NMR, POLY(VINYLIDENE FLUORIDE), FEP FILMS, POLYMER ELECTROLYTE, SULFONIC-ACID, CROSS-LINKING, SURFACE MODIFICATION, COPOLYMER MEMBRANES |
| Divisions: | Faculty of Engineering and Physical Sciences > Chemistry |
| ID Code: | 1691 |
| Deposited By: | Mr Adam Field |
| Deposited On: | 27 May 2010 15:43 |
| Last Modified: | 25 Apr 2013 12:52 |
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