Journal
JOURNAL OF POWER SOURCES
Volume 217, Issue -, Pages 329-335Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2012.06.041
Keywords
Anion exchange membrane; Bis-imidazolium-functionalized ionic liquids; Hydroxide conductivity; Chemical stability
Funding
- Natural Science Foundation of China [20974072, 21174102]
- Natural Science Foundation of Jiangsu Province [BK2011274]
- Program for Scientific Innovation Research of College Graduate in Jiangsu Province [CXZZ11-0103]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Novel anion-exchange membranes (AEMs) are prepared via in situ cross-linking of styrene, acrylonitrile and the bis-imidazolium functionalized ionic liquid monomer, 1-allyl-3-(6-(1-butyl-2-methylimidazol-3-ium-3-yl)hexyl)-2-methylimidazol-3-ium bromide ([ABMHM][Br](2)), and followed by anion-exchange with hydroxide ions. The morphology and characteristic properties of the resultant copolymer membranes, such as the water uptake, swelling ratio, ion exchange capacity (IEC), hydroxide conductivity, and chemical stability are investigated. The membrane containing 40% mass fraction of [ABMHM] [OH](2) shows hydroxide conductivity up to 2.0 x 10(-2) S cm(-1) and good long-term stability in 1 M KOH solution at 60 degrees C. The results of this study suggest that the AEMs based on bis-imidazolium cations have good perspectives for alkaline fuel cell applications. (C) 2012 Elsevier B.V. All rights reserved.
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