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Benzyltetramethylimidazolium-based Membrane with Exceptional Alkaline Stability in Fuel Cell: Role of Structure in Alkaline Stability

Abstract

Highly alkaline stable anion exchange membrane is a critical component in the alkaline polyelectroyltes fuel cells (APEFCs). However, the commonly employed cationic moieties in the membrane show limited alkaline stability, thereby hardly enduring harsh fuel cell operating conditions. In this study, we synthesize a series of imidazolium-type anion-exchange membranes, where, the substituents are attached at different positions of imdazolium ring to systematically investigate their impact on the overall alkaline stability of the cationic moieties. 1,2,4,5-tetramethylimidazolium functionalized anion-exchange membrane has the highest alkaline stability, 97 % remains after 7 days in 1M NaOD / D2O/ CD3OD solution at 60 oC. Comparing with the recently reported imidazolium-type membranes, the resultant membrane exhibits unprecedented fuel cell performance to date, reaching an exceptional excellent peak power density of 340 mW cm-2 at 80 oC.

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Publication details

The article was received on 16 Oct 2017, accepted on 27 Nov 2017 and first published on 27 Nov 2017


Article type: Paper
DOI: 10.1039/C7TA09095A
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Benzyltetramethylimidazolium-based Membrane with Exceptional Alkaline Stability in Fuel Cell: Role of Structure in Alkaline Stability

    Y. Zhu, Y. He, X. Ge, X. Liang, M. A. Shehzad, M. Hu, Y. Liu, L. Wu and T. Xu, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA09095A

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