Cr Poisoning On Nd2Ni0.95Cu0.05O4+δ Cathode for Solid Oxide Fuel Cells

Abstract In this study, Nd 2 Ni 1-x Cu x O 4+δ (x=0, 0.05, 0.1, and 0.2) layered perovskite powders were synthesized by the glycine nitrate process (GNP) and the chromium poisoning effect on the electrochemical performance of the Nd 2 Ni 0.95 Cu 0.05 O 4+δ and La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ cathodes were investigated. In the case of the LSCF cathode, the strontium chromite phase formed after the exposure of the gaseous chromium species, while there was no additional phase in the Nd 2 Ni 0.95 Cu 0.05 O 4+δ cathode. The area specific resistance (ASR) of the Nd 2 Ni 0.95 Cu 0.05 O 4+δ cathode did not change significantly after the exposure of the gaseous chromium species at 800°C.