Journal article
Phosphoric acid doped polysulfone membranes with aminopyridine pendant groups and imidazole cross-links
Korea Institute of Science and Technology1
Department of Energy Conversion and Storage, Technical University of Denmark2
Fundamental Electrochemistry, Department of Energy Conversion and Storage, Technical University of Denmark3
Proton conductors, Department of Energy Conversion and Storage, Technical University of Denmark4
Udel polysulfone based membranes with 4-aminopyridine pendant groups and cross-linking imidazole units are synthesized in a simple two step reaction. The ratio of 4-aminopyridine and imidazole is varied and the materials are extensively characterized. The average phosphoric acid uptake (in 85 wt% PA) ranges between 90 wt% and 452 wt% depending on the ratio of 4-aminopyridine and imidazole and the membranes show good proton conductivity of up to 65 mS cm-1 at 160 °C under non-humidified conditions.
The applicability of these materials as a polymer electrolyte membrane was proven by single cell tests at 130 °C. The relationships between PA uptake, chemical composition and mechanical stability are reported. Proton conductivity and mechanical properties only depend on the phosphoric acid content, which, however is a function of the chemical composition.
Language: | English |
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Year: | 2015 |
Pages: | 102-113 |
ISSN: | 18731945 and 00143057 |
Types: | Journal article |
DOI: | 10.1016/j.eurpolymj.2015.08.026 |
ORCIDs: | Elsøe, Katrine , Cleemann, Lars Nilausen and Li, Qingfeng |