Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 11, Issue 6, Pages 1265-1268Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.04.016
Keywords
Solid oxide fuel cell; Carbon; Electrochemical performance; Gasification
Categories
Funding
- National Natural Science Foundation of China [20703024, 20676061]
- National 863 Program [2007AA05Z133]
- National Basic Research Program of China [2007CB209704]
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Solid carbon was investigated as the fuel for an intermediate-temperature solid oxide fuel cell (IT-SOFC). An innovative, indirect operating method involving internal catalytic gasification of carbon to gaseous carbon monoxide via the reverse Boudouard reaction (C(s) + CO2(g) -> 2CO(g)) was proposed. The carbon gasification reaction rate was greatly enhanced by adopting FemOn-MxO (M = Li, K, Ca) as a catalyst. A peak power density of similar to 297 mW cm(-2) was achieved at 850 degrees C for an anode-supported SOFC with scandium-stabilized zirconia electrolyte and a La0.8Sr0.2MnO3 cathode by applying a catalyst-loaded, activated carbon as fuel. This peak power density was only modestly lower than that obtained using gaseous hydrogen as the fuel.
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