Solid oxide fuel cell composite cathodes prepared by infiltration of copper manganese spinel into porous yttria stabilized zirconia

Composite cathodes of Cu1.25Mn1.75O4 (CMO) spinel and yttria stabilized zirconia (YSZ) were made by infiltration of a precursor Cu–Mn gel into a porous YSZ matrix. Structural characterization showed no evidence of secondary phases but revealed a continuous network of CMO in the YSZ framework. Impedance spectroscopy and overpotential measurements revealed that the CMO–YSZ composite cathode had better electrochemical performance than the …