Enhancing hybrid direct carbon fuel cell anode performance using Ag2O

Lisa Deleebeeck, Davide Ippolito, Kent Kammer Hansen

Research output: Contribution to journalJournal articleResearchpeer-review


A hybrid-direct carbon fuel cell (HDCFC), consisting of a molten slurry of solid carbon black and (Li-K)2CO3 added to the anode chamber of a solid oxide fuel cell, was characterized using current-potential-power density curves, electrochemical impedance spectroscopy, and cyclic voltammetry. Two types of experimental setups were employed in this study, an anode-supported full cell configuration (two electrodes, two atmospheres setup) and a 3-electrode electrolyte-supported half-cell setup (single atmosphere). Anode processes with and without catalysts were investigated as a function of temperature (700-800 °C) and anode sweep gas (N2, 4-100% CO2 in N2-CO2). It was shown that the addition of silver based catalysts (Ag, Ag2O, Ag2CO3) into the carbon-carbonate slurry enhanced the performance of the HDCFC.
Original languageEnglish
JournalElectrochimica Acta
Pages (from-to)222-239
Number of pages18
Publication statusPublished - 2015


  • carbon black
  • cyclic voltammetry (CV)
  • Direct carbon fuel cell (DCFC)
  • electrochemical performance
  • silver oxide
  • Carbon black
  • Carbon dioxide
  • Catalysts
  • Cyclic voltammetry
  • Electrochemical impedance spectroscopy
  • Electrodes
  • Silver
  • Silver oxides
  • Solid oxide fuel cells (SOFC)
  • Anode chambers
  • Anode-supported
  • Cell configurations
  • Current-potential
  • Direct carbons
  • Electrochemical performance
  • Power densities
  • Two electrodes
  • Direct carbon fuel cells (DCFC)


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