Characterization of NdSrCo1−xFexO4+δ (0 ≤ x ≤ 1.0) intergrowth oxide cathode materials for intermediate temperature solid oxide fuel cells

NdSrCo1−xFexO4+δ (0 ≤ x ≤ 1.0) intergrowth oxides have been investigated as cathode materials for intermediate temperature solid oxide fuel cells (IT-SOFCs). All the cathodes prepared by a glycine nitrate process (GNP) indicated single phase intergrowth oxides. The introduction of Fe for Co leads to decrease TEC values and electrical conductivity, and increase polarization resistance and oxygen content. The polarization resistance of NdSrCoO4+δ composition is 0.16 Ω cm2 at 800 °C in air atmosphere, which is the best electrochemical performance compared with other compositions.