Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 6, Issue 32, Pages 15456-15477Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta05428b
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Funding
- U.S. Department of Energy (US DOE), Office of Energy Efficiency and Renewable Energy (EERE), Fuel Cell Technologies Office (FCTO) [DE-AC52-06NA25396]
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Quaternized aryl ether-free polyaromatics are an important family of polymer electrolytes for alkaline membrane fuel cells (AMFCs) due to their outstanding alkaline stability. In this review, state-of-the-art quaternized aryl ether-free polyaromatics are discussed with respect to their synthesis and preparation. The mechanical and electrochemical properties and alkaline stability of the polyaromatics that impact AMFC performance and durability are discussed in comparison with aryl ether-containing polyaromatic and polyolefinic electrolytes. Their performance in membrane electrode assemblies (MEAs) is discussed with emphasis on the area specific resistance and phenyl group adsorption on hydrogen oxidation catalysts. The AMFC performance of MEAs employing state-of-the-art aryl ether-free polyaromatics is compared with those employing polyolefins and aryl ether-containing polyaromatics. Finally, the limitations and outlook of quaternized aryl ether-free polyaromatics are briefly summarized.
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