Lee, SH;
Lee, WJ;
Kim, TK;
Bayazit, MK;
Kim, SO;
Choi, YS;
(2017)
UV-crosslinked poly(arylene ether sulfone) - LAPONITE (R) nanocomposites for proton exchange membranes.
RSC Advances
, 7
(45)
pp. 28358-28365.
10.1039/c7ra04419d.
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Abstract
The dimensional stability and barrier properties of proton exchange membranes are critical issues for high-performance proton exchange membrane fuel cells (PEMFCs). In this work, we introduce a viable and effective strategy for preparing high proton-conductive polymer membranes with remarkable dimensional stability and barrier properties. Sulfonated poly(arylene sulfone)s (sPASs) with a UV-crosslinkable monomer, 2,2′-diallylbisphenol A (DABPA), is successfully synthesized via condensation polymerization, showing competitive molecular weights and sulfonation degrees to the neat polymer. Crosslinked nanocomposite membranes can be fabricated by incorporating soft bridge molecules and exfoliated LAPONITE® nanofillers, and subsequent UV-crosslinking. The sPAS–LAPONITE® nanocomposite membranes show greatly improved dimensional stabilities and barrier properties including remarkably reduced swelling ratio in solvent or methanol aqueous solutions. These enhanced properties lead to excellent performance in a direct methanol fuel cell (DMFC) test, surpassing that of a commercially available Nafion membrane based devices.
| Type: | Article |
|---|---|
| Title: | UV-crosslinked poly(arylene ether sulfone) - LAPONITE (R) nanocomposites for proton exchange membranes |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/c7ra04419d |
| Publisher version: | http://dx.doi.org/10.1039/c7ra04419d |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. |
| Keywords: | METHANOL FUEL-CELLS, POLYMER ELECTROLYTE MEMBRANES, OF-THE-ART, PERFORMANCE, STATE, ACID, TECHNOLOGIES, SELECTIVITY, COPOLYMERS, LINKING |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10040481 |
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