Jacob M. Haag

Application of LaSr2Fe2CrO9-δ in solid oxide fuel cell anodes

The oxide composition LaSr 2 Fe 2 CrO 9-δ was tested for application as an anode material for solid oxide fuel cells. Despite the high Fe content, this composition was found to be stable under SOFC anode conditions up to ∼800°C. The composite anode LaSr 2 Fe 2 CrO 9-δ -Gd 0.1 Ce 0.9 O 2-δ was tested in Gd 0.1 Ce 0.9 O 2-δ and La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3-δ electrolyte-supported cells in air and humidified H 2 . The maximum power density was ≈365 mW/cm 2 at 800°C, with a corresponding total cell resistance of ≈0.69 Ω cm 2 . However, the anode polarization resistance at 800°C was ≈0.25 Ω cm 2 .