Layered-perovskite oxides with in-situ exsolved Co-Fe alloy nanoparticles as highly efficient electrode for high-temperature carbon dioxide electrolysis

Carbon dioxide (CO2) reduction using solid oxide electrolysis cells (SOEC) has attracted great attention because of the high efficiency and fast kinetics enabled by the high function temperatures. Electrode materials...

The influence of the 6s2 configuration of Bi3+ on the structures of A′BiNb2O7 (A′ = Rb, Na, Li) layered perovskite oxides

The presence of non-spherical Bi3+ cations enhances, but does not cause, the polar distortions in layered perovskite oxides.

Scandium Doping Effect on a Layered Perovskite Cathode for Low-Temperature Solid Oxide Fuel Cells (LT-SOFCs)

Layered perovskite oxides are considered as promising cathode materials for the solid oxide fuel cell (SOFC) due to their high electronic/ionic conductivity and fast oxygen kinetics at low temperature. Many researchers have focused on further improving the electrochemical performance of the layered perovskite material by doping various metal ions into the B-site. Herein, we report that Sc3+ doping into the layered perovskite material, PrBaCo2O5+δ (PBCO), shows a positive effect of increasing electrochemical performances. We confirmed that Sc3+ doping could provide a favorable crystalline structure of layered perovskite for oxygen ion transfer in the lattice with improved Goldschmidt tolerance factor and specific free volume. Consequently, the Sc3+ doped PBCO exhibits a maximum power density of 0.73 W cm−2 at 500 °C, 1.3 times higher than that of PBCO. These results indicate that Sc3+ doping could effectively improve the electrochemical properties of the layered perovskite material, PBCO.