Abstract
Electricity generation via low concentration coal bed methane (LC-CBM) can save energy and reduce greenhouse gas emissions. Solid oxide fuel cell (SOFC) is a very promising power generation device that can directly utilize various fuels for power generation, but the carbon deposition issue remains the critical challenge when using the traditional nickel-based materials as the anode. In this study, three types of 5Ni/Al2O3, 5Mo/Al2O3, and Ni-Mo/Al2O3 catalysts were prepared and characterized. The Ni-Mo/Al2O3 catalyst show better catalytic activity for CH4 conversion (99.4 %), CO selectivity (98.9 %), H/C ratio (2.15) and stability at 800 °C for 100 h. The single cell with LC-CBM external reforming Ni-Mo/Al2O3 catalyst achieved a peak power density of 0.669 W cm−2 at 800 °C and showed a significant improvement of 160 % compared to that of the direct LC-CBM cell. Additionally, the incorporation of Ni-Mo/Al2O3 catalyst for reforming could also prolong the stability of the cell at 750 °C.
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