Abstract
The possibility of developing large solid oxide fuel cell (SOFC) stacks based upon 25cm2 ceramic oxide anode-supported cells is investigated. Planar fuel cells comprising strontium titanate-based anode support impregnated with active catalysts were prepared using a combination of deposition techniques. The fuel cell tests performed in a semisealed rig have shown power densities of 185mWcm-2 at 850 degrees C using humidified hydrogen as fuel and air as oxidant. The structure and evolution of the catalytically active impregnated materials-10mol% Gd-doped CeO2 and nickel- are analysed using electron microscopy at the end of the fuel cell test, revealing that a ceria and nickel layer surrounds the titanate backbone grains while similar to 50-150nm spherical-like nickel particles uniformly decorate this top layer.
Original language | English |
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Pages (from-to) | 1718-1723 |
Number of pages | 6 |
Journal | Journal of the American Ceramic Society |
Volume | 96 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2013 |
Keywords
- Oxide fuel-cells
- Electrical-properties
- Strontium-titanate
- Performance
- Cathodes