Phosphoric acid doped polysulfone membranes with aminopyridine pendant groups and imidazole cross-links
- Phosphoric acid doped polysulfone membranes with aminopyridine pendant groups and imidazole cross-links
- Steffen Hink; Katrine Elsø; Lars Nilausen Cleemann; 헨켄스마이어디억; 장종현; 김형준; 한종희; 남석우; Qingfeng Li
- High temperature polymer electrolyte; membrane fuel cell (HT-PEMFC); Udel polysulfone; Aminopyridine
- Issue Date
- European polymer journal
- VOL 72, 102-113
- Udel polysulfone based membranes with 4-aminopyridine pendant groups and crosslinking
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.
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