Abstract
2,6-di (3-pyridyl)phenol and the title polymer are synthesized at 1 kg scale. Polymer is processed and crosslinked without the introduction of non-aromatic moieties after shaping into membranes. Attractive proton conduction, at high temperature (140–180 °C: 300 mS cm−1) and at room temperature (60 mS cm−1) are recorded in the dry state (higher numbers at modest humidity) and excellent retention of properties after challenge by humidity (in contrast with state-of-the-art PBI membranes). Functional fuel cells are made and tested. In prolonged use the membrane is plasticized and this seems attributable to curing reversal at the hydrogen electrode. For high temperature fuel cell use, another curing scheme (again without the introduction of aliphatic character) must be found.
Original language | English |
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Pages (from-to) | 234-239 |
Number of pages | 6 |
Journal | Journal of Power Sources |
Volume | 379 |
DOIs | |
Publication status | Published - 1 Mar 2018 |
Funding
This work was supported by the European Union (FCH-JU Smartcat project, no. 325327 ) for the explorations at (up to) 1 kg scale and by the Province of Gelderland ( SEB 2012-022485 ) for preparations for further scaling up. First explorations at gram scale synthesis of monomer and polymer, were supported by the Dutch Ministry of Economic Affairs (EOS NEO T01001 ). Early work with fiber-supported films was supported by the Province of Gelderland (item 2010-010350 ). Appendix A
Keywords
- 2,6-di(3-pyridyl)phenol
- High temperature PEMFC
- Hydrogenolysis
- Oxidative polymerization
- Poly[(2,6-di-3-pyridyl)-1,4-phenylene oxide]
- Stability