Abstract
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 language | English |
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Journal | Electrochimica Acta |
Volume | 152 |
Pages (from-to) | 222-239 |
Number of pages | 18 |
ISSN | 0013-4686 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- 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)