Investigation on electrical conductivity of LSM/YSZ8, LSM/Ce0.84Y0.16O0.96 and LSM/Ce0.42Zr0.42Y0.16O0.96 composite cathodes of SOFCs

Among the different tested dense composite cathodes, CY-based composite material offers the highest electrode conductivity in the temperature range of 300-900 °C. For the composite cathodes, it was shown that by decreasing the sintering temperature and increasing the amount of remained porosity, the conductivity decrease and for all the used conductivity measuring temperature, they were merged to each other, so that the effect of measuring temperature on electrical conductivity nearly disappeared.