Abstract
Yttria-stabilized zirconia (YSZ) membranes were deposited onto porous NiO-YSZ anode supports by screen printing. Combined with La0.7Sr0.3MnO3-YSZ composite cathode, the prepared anode-supported solid oxide fuel cells (SOFCs) were electrochemically tested. A typical SOFC with a 30-μm-thick YSZ electrolyte membrane gave the maximum power densities (MPDs) of 0.26, 0.53, 0.78, and 1.03 W/cm2 at 650, 700, 800, and 850 °C, respectively, using hydrogen as fuel and stationary air as oxidant. Replacement of stationary air with pure oxygen flow exerted a significant positive effect on the MPDs of the cell. Using 100- and 200-ml/min oxygen as oxidants, the MPDs of the cell were enhanced 35.3% and 68.6%, respectively. Polarization analysis indicated that, at the MPD points, the electrode polarization resistances accounted for 80% of the cell total resistances.
| Original language | English |
|---|---|
| Pages (from-to) | 2661-2665 |
| Number of pages | 5 |
| Journal | Journal of Solid State Electrochemistry |
| Volume | 15 |
| Issue number | 11-12 |
| DOIs | |
| State | Published - Dec 2011 |
Keywords
- Electrode polarization
- Screen printing
- Solid oxide fuel cells
- YSZ membranes
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