Abstract
The long-term stability of direct carbon fuel cells, based on solid oxide fuel cells with molten Sb and Sb-Bi anodes, was examined for operation with activated charcoal, rice starch, and bio-oil fuels at 973 K. With intermittent stirring of the fuel-metal anode interface, the anode performance was stable, and reasonable power densities (∼250 mW/cm2) were achieved for periods up to 250 h. With Sc-stabilized zirconia, severe thinning of the electrolyte occurred in regions of high current flow. No electrolyte thinning was observed with yttria-stabilized zirconia as the electrolyte operating at the same current densities.
Original language | English |
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Pages (from-to) | 3342-3348 |
Number of pages | 7 |
Journal | AIChE Journal |
Volume | 59 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2013 |
Keywords
- Bio-oil
- Catalysis
- Coal
- Electrochemistry
- Energy
- Fuel cells
- Molten antimony