Impregnated Nd2NiO4+δ- scandia stabilized zirconia composite cathode for intermediate-temperature solid oxide fuel cells

Here we developed a novel Nd2NiO4+delta (NNO) impregnated SSZ composite cathode for intermediate temperature solid oxide fuel cells (IT-SOFCs). The area specific polarization resistance of the composite cathode for oxygen reduction can be as low as 0.04 Omega cm(2) at 800 degrees C. The anode supported SOFC with the structure of Ni-YSZ anode, SSZ electrolyte and impregnated NNO-SSZ composite cathode was prepared by the tape casting, co-firing and impregnation method. The resulting fuel cell exhibits maximum power densities of 1.26 and 0.73 W cm(-2) at 800 and 700 degrees C, respectively when operated in hydrogen and air. Additionally, the electrical conductivity of the NNO cathode and the chemical compatibility with the electrolyte material were also studied. (C) 2014 Elsevier B.V. All rights reserved.