Imidazolium-based organic-inorganic hybrid anion exchange membranes for fuel cell applications

Tianying Feng, Bencai Lin, Shuai Zhang, Ningyi Yuan, Fuqiang Chu, Michael A. Hickner, Chenyu Wang, Liang Zhu, Jianning Ding

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72 Scopus citations


Imidazolium-based ionic liquids and imidazolium-based organic-inorganic hybrid alkaline anion exchange membranes (AEMs) are synthesized and investigated in the present work. The imidazolium-based hybrid AEMs are prepared via in situ cross-linking of styrene, acrylonitrile, 1-vinyl-propyl-triethoxysilaneimidazolium chloride ([VPSIm][Cl]) and 1-vinyl-3-butylimidazolium bromide ([VBIm][Br]), followed by anion exchange with hydroxide ions. The water uptake and swelling degree of the hybrid AEMs decrease with increasing [VPSIm][Cl] content due to the formation of an Si-O-Si inorganic network in the membranes. The resulting organic-inorganic hybrid AEMs show good thermal stability, excellent mechanical properties and high conductivity (above 10-2 S cm-1 at room temperature in liquid water). Compared with samples without the addition of [VPSIm][Cl], the hybrid membranes show much higher alkaline stability, and the hybrid AEMs displayed excellent chemical stability up to 480 h in 2 M KOH solution at 60 °C.

Original languageEnglish (US)
Pages (from-to)7-14
Number of pages8
JournalJournal of Membrane Science
StatePublished - Jun 15 2016

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation


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