期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 11, 期 4, 页码 979-987出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ee03595k
关键词
-
资金
- US Department of Energy
- Advanced Research Project Agency-Energy (ARPA-E) program [DE-AR0000314]
- [DE-AC52-06NA25396]
Fuel cells are attractive devices that convert chemical energy into electricity through the direct electrochemical reaction of hydrogen and oxygen. Intermediate temperature fuel cells operated at 200-300 degrees C can simplify water and thermal managements, enable the use of non-precious or low-loading precious metal catalysts and provide insensitivity toward fuel and air impurities such as carbon monoxide. However, the performance of current intermediate temperature fuel cells is poor due to a lack of highly-conductive membrane electrolytes and optimal electrodes designed for these fuel cells. Here, we demonstrate high-performing intermediate temperature fuel cells that use SnP2O7-polymer composite membranes and a quaternary ammonium-biphosphate ion-pair coordinated polymer electrolyte in the electrodes. The peak power density of the fuel cell under H-2 and O-2 reached 870 mW cm(-2) at 240 degrees C with minimal performance loss under exposure to 25% carbon monoxide.
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