Anion conductive aromatic membrane of poly(tetra phenyl ether sulfone) containing hexa-imidazolium hydroxides for alkaline fuel cell application
作者： Md. Awlad Hossain , Youngdon Lim , Soonho Lee , Hohyoun Jang , Seongyoung Choi
DOI: 10.1016/J.SSI.2013.09.036
关键词:
摘要: Abstract Anion exchange membranes of poly(tetra phenyl ether sulfone) containing hexa-imidazolium hydroxides on the hydrophilic segment a polymer unit were synthesized by sequential polycondensation, chloromethylation, substitution with 1-methylimidazolium and ion exchange. They showed elevated molecular weight, high solubility in polar aprotic solvents strong chemical thermal stabilities comparison to alkyl quaternary ammonium-functionalized polymers. Different levels tested; resulting ionomer capacities (IECs) up 2.41 mmol g− 1. The imidazolium-functionalized copolymer lower water affinity durability alkaline condition. exhibited hydroxide conductivity above 10− 2 S cm− 1 at room temperature good stability for 7 days without significant losses conductivity.
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