期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 11, 期 11, 页码 3283-3291出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ee02192a
关键词
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资金
- U.S. Department of Energy (US DOE), Office of Energy Efficiency and Renewable Energy (EERE) [DE-AC52-06NA25396]
- U.S. Department of Energy (US DOE), Fuel Cell Technologies Office (FCTO) [DE-AC52-06NA25396]
- Los Alamos National Security, LLC, the National Nuclear Security Administration of U.S. Department of Energy [DE-AC52-06NA25396]
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
- CNMS, which is a DOE Office of Science User Facility
- U.S. Department of Energy (ARPA-E) [IONICS DE-FOA-0001478]
Alkaline membrane fuel cells (AMFCs) show great potential as alternative energy conversion devices to acidic proton exchange membrane fuel cells (PEMFCs). Over the last decade, there has been significant progress in the development of alkaline-stable polyaromatic materials for membrane separators and ionomeric binders for AMFCs. However, the AMFC performance using polyaromatic ionomers is generally poor, ca. a peak power density of <400 mW cm(-2). Here, we report a rational design for polyaromatic ionomers which can minimize undesirable phenyl group interaction with hydrogen oxidation catalysts. The AMFC using a newly designed aryl ether-free poly(fluorene) ionomer exhibits a peak power density of 1.46 W cm(-2), which is approaching that of Nafion-based PEMFCs. This study further discusses the remaining challenges of high-performing AMFCs.
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