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http://repository.kln.ac.lk/handle/123456789/3964
Title: | New membranes based on ionic liquids for PEM fuel cells at elevated temperatures |
Authors: | Ye, H. Huang, J. Xu, J.J. Kodiweera, N.A.C. Jayakody, J.R.P. Greenbaum, S.G. |
Keywords: | Proton exchange membranes Ionic liquids Polybenzimidazole NMR FTIR |
Issue Date: | 2008 |
Publisher: | Journal of Power Sources |
Abstract: | Proton exchange membrane (PEM) fuel cells operating at elevated temperature, above 120 �C, will yield significant benefits but face big challenges for the development of suitable PEMs. The objectives of this research are to demonstrate the feasibility of the concept and realize [acid/ionic liquid/polymer] composite gel-type membranes as such PEMs. Novel membranes consisting of anhydrous proton solvent H3PO4, the protic ionic liquid PMIH2PO4, and polybenzimidazole (PBI) as a matrix have been prepared and characterized for PEM fuel cells intended for operation at elevated temperature (120?150 �C). Physical and electrochemical analyses have demonstrated promising characteristics of these H3PO4/PMIH2PO4/PBI membranes at elevated temperature. The proton transport mechanism in these new membranes has been investigated by Fourier transform infrared and nuclear magnetic resonance spectroscopic methods. |
URI: | http://repository.kln.ac.lk/handle/123456789/3964 |
Appears in Collections: | Physics |
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