Phosphoric acid doped polysulfone membranes with aminopyridine pendant groups and imidazole cross-links

Title
Phosphoric acid doped polysulfone membranes with aminopyridine pendant groups and imidazole cross-links
Authors
Steffen HinkKatrine ElsøLars Nilausen Cleemann헨켄스마이어디억장종현김형준한종희남석우Qingfeng Li
Keywords
High temperature polymer electrolyte; membrane fuel cell (HT-PEMFC); Udel polysulfone; Aminopyridine
Issue Date
2015-11
Publisher
European polymer journal
Citation
VOL 72, 102-113
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/50277
ISSN
00143057
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KIST Publication > Article
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