Study on the alkaline stability of imidazolium and benzimidazolium based polyelectrolytes for anion exchange membrane fuel cells

Li Cheng Jheng, Chin Kuen Tai, Steve Lien Chung Hsu, Bi Yun Lin, Likey Chen, Bo Cheng Wang, Lieh Kuang Chiang, Wen Ching Ko

研究成果: Article同行評審

28 引文 斯高帕斯(Scopus)

摘要

Imidazolium and benzimidazolium groups containing anion exchange membranes (AEMs) were synthesized by the functionalization of poly(styrene-co-vinylbenzyl chloride) with methylimidazole and methylbenzylimidazole, respectively. The essential properties for AEMs used in anion exchange membrane fuel cells (AEMFCs) including ion exchange capacity, water uptake, hydration number, and ionic conductivity were investigated. A comparative study of these two AEMs focusing on the alkaline stability was conducted in the present work. We have used TGA, FTIR, 1H NMR, and 13C NMR techniques to evaluate the susceptibility to alkaline degradation. Meanwhile, we have performed density functional theory (DFT) calculations to confirm the experimental results of the alkaline degradation study. It has been found that the benzimidazolium cations would be more easily attacked by OH anions leading to ring-opening compared to the imidazolium cations.

原文English
頁(從 - 到)5315-5326
頁數12
期刊International Journal of Hydrogen Energy
42
發行號8
DOIs
出版狀態Published - 2017 2月 23

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 燃料技術
  • 凝聚態物理學
  • 能源工程與電力技術

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