Ni-SDC Based Cermets for Direct Dry Reforming of Methane on SOFC Anode

In this study, Ni-SDC (samarium-doped ceria) and CaO-modified Ni-SDC were examined as anode materials for SOFC with direct internal dry reforming of methane. The CaO addition is aimed to enhance the coking resistance in the methane direct internal dry reforming operation. Current-voltage characteristics were measured by feeding directly CH4-CO2 mixture to the anodes, and overvoltage in the power generation was separated from alternative current impedance measurements. In addition, stability tests under a constant current loading were carried out to evaluate the durability. From these results, it is demonstrated that Ni-SDC based materials are promising due to their high performance, coking resistance and stability.