The Research of Copper Ion Doped Lanthanum Silicate Electrolyte
La9.33Si6-xCuxO26-x powders with high purity were prepared. Using XRD, IR, SEM and ac impedance spectrum, crystal structure, surface microstructure and conductivity properties were respectively characterized. The results showed that the La9.33Si6-xCuxO26-x grains embrace the crystal structure of p63/m apatite and the optimum sintering temperature of La9.33Si6-xCuxO26-x electrolyte was 1500 ℃. The ac impedance spectrum test for the La9.33 Si6 xCuxO26 - x (x = 0.1, 0.2, 0.1, 0.2, 0.5) in different temperature conductivity showed that La9.33Si6-xCuxO26-x had the highest ionic conductivity which value was up to 0.0735 S·cm-1 when the doping content was 0.3.