A simple heat treatment to prepare covalently crosslinked membranes from sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) for application in fuel cells

For application in fuel cells, a series of low-cost proton exchange membranes with covalently crosslinking structure were prepared from sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) just through a heat treatment. The crosslinking reaction was verified and investigated in detail. The crosslinking...

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Bibliographic Details
Published in:Journal of membrane science 2010-02, Vol.348 (1), p.167-173
Main Authors: Wu, Dan, Wu, Liang, Woo, Jung-Je, Yun, Sung-Hyun, Seo, Seok-Jun, Xu, Tongwen, Moon, Seung-Hyeon
Format: Article
Language:English
Subjects:
Crosslinking
Fuel cell
Fuel technology
Membranes
Poly(phenylene oxide)
Proton exchange membrane
Q1
Single cell test
Temperature
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Summary:For application in fuel cells, a series of low-cost proton exchange membranes with covalently crosslinking structure were prepared from sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) just through a heat treatment. The crosslinking reaction was verified and investigated in detail. The crosslinking degree could be controlled by adjusting the time or temperature for heat treatment. With a proton conductivity of 0.128 S cm −1 and tensile strength of 52.8 MPa, the optimum membrane showed a maxim power density of 0.893 W cm −2 while that of Nafion ® 112 is 0.602 W cm −2 in a single cell test at 60 °C. In view of the competitive properties with Nafion ® series, the crosslinked membranes are qualified for a potential application in fuel cells.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2009.10.052