In order to develop SOFC running on hydrocarbon fuels, we have focused on a new method of improving electrode performance and reducing carbon deposition by coating thin films of samaria-doped ceria (SDC) within the pores of electrode by a sol-gel coating technique. The SDC coating on the pores of anode made it possible to have a good stability for long-term operation due to low carbon deposition and nickel sintering. In this study, we demonstrated a new method of improving electrode performance and reducing carbon deposition by coating thin films of samaria-doped ceria (SDC) and applied the modification technique to two different types of fuel cell structures, anode-supported SOFC and comb-shaped SOFC. From our results, the maximum power density of an anode-supported cell (electrolyte; 8 mol% YSZ and thickness of 30 μm, and cathode; La0.85Sr0.15MnO3) with the modified anode was about 300 mW/cm2 at 700 °C in the mixture of methane (25%) and air (75%) as the fuel and air as the oxidant. The cell was operated for 500 h without significant degradation of cell performance. For the comb-shaped SOFCs operated in the mixed-fuels fuel cell (MFFC) conditions, the cell performance was 40 mW/cm2 at 700 °C in the CH4/O2 ratio of 1.
- Nanotechnology Institute
Mixed-Fuels Fuel Cell Running on Methane-Air Mixture
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Yoon, SP, Kim, HJ, Park, B, Nam, SW, Han, J, Lim, T, & Hong, S. "Mixed-Fuels Fuel Cell Running on Methane-Air Mixture." Proceedings of the ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology. 3rd International Conference on Fuel Cell Science, Engineering and Technology. Ypsilanti, Michigan, USA. May 23–25, 2005. pp. 323-327. ASME. https://doi.org/10.1115/FUELCELL2005-74081
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