The stability of direct carbon fuel cells with molten Sb and Sb-Bi alloy anodes

Abhimanyu Jayakumar, Ashay Javadekar, Jacob Gissinger, John M. Vohs, George W. Huber, Raymond J. Gorte

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

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 languageEnglish
Pages (from-to)3342-3348
Number of pages7
JournalAIChE Journal
Volume59
Issue number9
DOIs
StatePublished - Sep 2013

Keywords

  • Bio-oil
  • Catalysis
  • Coal
  • Electrochemistry
  • Energy
  • Fuel cells
  • Molten antimony

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