The Research of Copper Ion Doped Lanthanum Silicate Electrolyte

DONG MA, HONG LEI, CHANG-LIAN CHEN, ZHI-LIANG HUANG

Abstract


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.

Keywords


Apatite solid electrolyte; Silicate; Combustion; Conductivity.


DOI
10.12783/dtetr/ecame2017/18404

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