Qingxi Fu

La0.4Sr0.6Ti1 − x Mn x O3 − δ Perovskites as Anode Materials for Solid Oxide Fuel Cells

Perovskite oxides, La0.4Sr0.6Ti1�xMnxO3� x = 0, 0.2, 0.4, 0.6, have been investigated in the search for new solid oxide fuel cell SOFC anode materials. La0.4Sr0.6Ti0.4Mn0.6O3� LSTM4646 shows an electrical conductivity of 22.6 S/cm in air and 1.5 S/cm in wet Ar/4% H2 pO2 10 �18 bar at 810°C. It is thermally and chemically compatible with yttria-stabilized zirconia YSZ electrolytes. Three processes govern the electrochemical performance of LSTM4646/YSZ anodes in wet Ar/H2 or wet CH4. They are proposed to be charge transfer at the LSTM4646/YSZ interface, dissociative adsorption of hydrogen on the electrode surface, and gas conversion impedance, respectively. Due to the low polarization resistance of the LSTM4646/YSZ anode, 0.32 cm

La0.4Sr0.6Ti1-xMnxO3-d Perovskites as New Anode Materials for Solid Oxide Fuel Cells

Perovskite oxides, La0.4Sr0.6Ti1�xMnxO3� x = 0, 0.2, 0.4, 0.6, have been investigated in the search for new solid oxide fuel cell SOFC anode materials. La0.4Sr0.6Ti0.4Mn0.6O3� LSTM4646 shows an electrical conductivity of 22.6 S/cm in air and 1.5 S/cm in wet Ar/4% H2 pO2 10 �18 bar at 810°C. It is thermally and chemically compatible with yttria-stabilized zirconia YSZ electrolytes. Three processes govern the electrochemical performance of LSTM4646/YSZ anodes in wet Ar/H2 or wet CH4. They are proposed to be charge transfer at the LSTM4646/YSZ interface, dissociative adsorption of hydrogen on the electrode surface, and gas conversion impedance, respectively. Due to the low polarization resistance of the LSTM4646/YSZ anode, 0.32 cm