Abstract
Molybdenum was added to nickel/Sm2O3-doped ceria (Ni/SDC) cermets by a MoCl5 impregnation method, and the activity of the resulting Ni–Mo/SDC cermets was evaluated as anodes in ammonia-fueled solid oxide fuel cells (SOFCs) in the temperature range of 973–1173K. It has been revealed that the addition of Mo improved remarkably the catalytic activity for NH3 reforming and enhanced the cell performance. The Ni–Mo/SDC anode with a Mo content of ~3 atomic % of the total metal showed the highest catalytic activity for NH3 reforming. XRD analysis of a NiO–MoO3 powder mixture annealed in NH3 revealed the formation of a nitride NixMo1–xN during operation of Ni–Mo/SDC anodes, and the role of the nitride in NH3 reforming was discussed in detail.
Published Version
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