Abstract
Ni-doped perovskite anodes have been investigated for oxidation of hydrogen in IT-SOFC. Perovskite materials are characterized by mixed electronic–ionic conductivity that combined to the high intrinsic catalytic activity of Ni allows to achieve high reaction rates. Suitable power densities of about 420mW/cm2 for the direct oxidation of hydrogen were achieved at 800°C. Temperature programmed reduction analysis carried out in hydrogen reveals that the catalyst at 800°C has totally lost the perovskite structure showing formation of substructures such as NiOOH and NiLa2O4.
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