The stability of direct carbon fuel cells with molten Sb and Sb–Bi alloy anodes |
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| Authors: | Abhimanyu Jayakumar Ashay Javadekar Jacob Gissinger John M Vohs George W Huber Raymond J Gorte |
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| Affiliation: | 1. Dept. of Chemical and Biomolecular Engineering, University of Pennsylvania, , Philadelphia, PA 19104;2. Dept. of Chemical Engineering, University of Delaware, , Newark, DE 19716;3. Dept. of Chemical Engineering, University of Massachusetts, , Amherst, MA 01003 |
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| 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. © 2012 American Institute of Chemical Engineers AIChE J, 59: 3342–3348, 2013 |
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| Keywords: | fuel cells coal energy electrochemistry catalysis molten antimony bio‐oil |
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