FUEL 198 |
| Among the potential candidates for intermediate temperature electrolytes for solid oxide fuel cells, lanthanum gallate is the most attractive in terms of oxygen ion conductivity and stability in a wide range of oxygen partial pressures. A major hurdle in the development of gallate-based fuel cells appears to be its chemical instability at the anode interface. The long-term stability of gallate-based fuel cells has been significantly improved by the use of a modified anode material. Single cells have shown stable performance at a power density of 0.5 W/cm2 at 700°C for over 2,000 hours. In addition, a combination of thin supported electrolyte and infiltrated electrodes allows more flexibility in cell fabrication. Tests have shown improved performance with this approach. Recent electrode and fabrication development will be presented. |
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Fuel Cell Technology: High Temperature Fuel Cells, SOFC and MCFC
8:00 AM-12:25 PM, Wednesday, August 22, 2007 Boston Park Plaza -- Cambridge Rm, Oral
Sci-Mix
Division of Fuel Chemistry |