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Biogas as a fuel for solid oxide fuel cells and synthesis gas production: effects of ceria-doping and hydrogen sulfide on the performance of nickel-based anode materials

This paper demonstrated the long-term operation (1000 h) of laboratory-scale state-of-the-art SOFCs running on practical hydrocarbon based fuel mixtures without any significant overall loss in SOFC performance, which is essential for SOFC commercialisation. The capability of conventional Ni/YSZ anode materials to internally reform hydrocarbon fuel mixtures was demonstrated and correlated with SOFC electrical performance, revealing methane reforming processes as being critical to SOFC performance. Investigations into the effects of sulphur poisoning and ceria-doping of Ni/YSZ provided further understanding into the behaviour of carbon deposition on supported nickel catalysts in general whilst also revealing an interplay between surface carbon, oxygen and sulphur.