Abstract In this study, PEEKs with different contents of imidazolium group (DI-PEEK) were synthesized by facile condensation polymerization using bisphenol A, 2,2′-di(2-ethyl-methylimidazole-methylene)-4,4′-dihydroxydiphenylether and difluorobenzophenone. Highly flexible and transparent DI-PEEK membranes showing anion exchange behavior could be prepared by the DI-PEEK solution using DMAc as a solvent. The DI-PEEK membrane with optimized content of imidazolium group (30 mol%) showed the highest ion conductivity (78 mS/cm at 80 ℃) without deterioration of thermal and mechanical stability among the samples. A membrane electrode assembly using the DI-PEEK membrane with optimized content of imidazolium group revealed comparable cell performance (98 mW/cm2 at 0.43 V) to that using a commercialized anion exchane membrane (114 mW/cm2 at 0.43 V) under operating conditions of 60 ℃ and 100% RH.

中文翻译：

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使用含咪唑鎓的聚醚醚酮的阴离子交换膜用于阴离子交换膜燃料电池 (AEMFC)

摘要 本研究以双酚 A、2,2'-二(2-乙基-甲基咪唑-亚甲基)-4,4'-二羟基二苯醚和二氟二苯甲酮。可以通过使用 DMAc 作为溶剂的 DI-PEEK 溶液制备具有阴离子交换行为的高度灵活和透明的 DI-PEEK 膜。具有优化咪唑鎓基团含量（30 mol%）的 DI-PEEK 膜在样品中表现出最高的离子电导率（80 ℃时为 78 mS/cm），且热稳定性和机械稳定性没有降低。使用具有优化咪唑鎓基团含量的 DI-PEEK 膜的膜电极组件显示出与使用商业化阴离子交换膜（0.43 V 时为 98 mW/cm2）相当的电池性能（0.43 V 时为 114 mW/cm2）。