Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 443, Issue -, Pages 193-200Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2013.04.059
Keywords
Alkaline fuel cell; Anion exchange membrane; Benzimidazolium; Poly(phenylene oxide)
Categories
Funding
- National Natural Science Foundation of China [51273185, 21106140, 21025626, J1030412]
- National Basic Research Program of China [2012CB932800]
- National High Technology Research and Development Program 863 [2012AA03A608]
- Programs of Anhui Province for Science and Technology [11010202157]
- UK's Engineering and Physical Sciences Research Council [EP/H025340/1, EP/I004882/1]
- Engineering and Physical Sciences Research Council [EP/I004882/1, EP/H025340/1] Funding Source: researchfish
- EPSRC [EP/I004882/1, EP/H025340/1] Funding Source: UKRI
Ask authors/readers for more resources
Novel benzimidazolium (BIm) functionalized anion exchange membranes (AEMs) are synthesized and characterized for alkaline fuel cells (AFCs). Poly(phenylene oxide) (PPO) is firstly brominated followed by nucleophilic substitution reaction with methylbenzimidazole to obtain the objective BIm-PPO AEMs. Such solution-casting AEMs show good mechanical and thermal stabilities as well as the favorable fuel cell-related indicators, including high ion exchange capacity, proper water uptake and high ionic conductivity. In addition, a single H-2/O-2 fuel cell test by employing the optimal BIm-PPO-0.54 AEM yields a peak power density of 13 mW cm(-2) at 35 degrees C, indicating the potential application of BIm-PPO AEMs in AFCs. Compared with the analogous AEMs based on PPO containing the classical pendant quaternary ammonium and imidazolium cations, BIm-PPO AEMs show the advantages in dimensional, mechanical and thermal stabilities, while simultaneously exhibiting the higher ionic conductivity. Compared with polybenzimidazolium based AEMs, where BIm cations distribute within the polymer backbone, AEMs herein present the higher ionic conductivity and power density (produced from a single cell test) due to the better mobility and aggregation abilities of pendant BIm cations attached to the backbone via a side chain relative to those distribute within the polymer backbone. (C) 2013 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available