International Journal of Hydrogen Energy, Vol.42, No.10, 6988-6996, 2017
Preparation and characterization of imidazoliumbased membranes for anion exchange membrane fuel cell applications
New anion exchange membranes (AEMs) with high conductivity, good dimensional and alkaline stability are currently required in order to develop alkaline fuel cells into efficient and clean energy conversion devices. In this study, a series of AEMs based on 1, 2dimethyl-3-(4-vinylbenzyl) imidazolium chloride ([DMVIm][C1]) are prepared and investigated. [DMVIm][C1] is synthesized and used as ion carriers and hydrophilic phase in the membranes. The water uptake, swelling ratio, IEC and conductivity of the AEMs increase with increasing the [DMVIm][C1]. The imidazolium-based AEMs show excellent thermal stability, sufficient mechanical strength, the membrane which containing 30% mass fraction of [DMVIm][Cl] shows conductivity up to 1.0 x 10(-2) S cm(-1) at room temperature and good long-term alkaline stability in 1 M KOH solution at 80 degrees C. The results of this study suggest that this type of AEMs have good perspectives for alkaline anion exchange membrane fuel cell applications. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Keywords:Anion exchange membrane;Fuel cell;Alkaline stability;Imidazolium-based membranes;High conductivity