Synthesis and Conductivity Investigation of Cu Doped Apatite Type Lanthanum Silicate Electrolyte

Wen Zhao Li; Zhi Liang Huang; Ziqian Li; Juan Chen

doi:10.4028/www.scientific.net/KEM.726.245

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 726Synthesis and Conductivity Investigation of Cu...

Synthesis and Conductivity Investigation of Cu Doped Apatite Type Lanthanum Silicate Electrolyte

Abstract:

In this paper, Cu-doped lanthanum silicate electrolyte (La_9.33Si_6-xCu_xO_26-x) precursor was synthesized by urea-nitrate combustion method using La₂O₃, CuO and TEOS as raw materials. The as-prepared precursor was lighted at 600 °C and sintered at 800 °C. The sintered powder samples were grinded and mixed absolutely by ball milled. Finally, we preformed and sintered powder samples to synthesis Cu-doped lanthanum silicate ceramics. Ac impedance method and analysis was used to test conductivity of as-prepared electrolyte, investigated the influence of balling time, sintering temperature and doping content on conductivity property of LSO sintered product. The final result shows that best balling time is 3 h, secondary sintering temperature is 1500 °C and the doping content is 0.3. Under this condition, the conductivity of Cu-doped lanthanum silicate electrolyte could reach 7.28×10^-3 s/cm at 700 °C.

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Periodical:

Key Engineering Materials (Volume 726)

Pages:

245-249

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.726.245

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Online since:

January 2017

Authors:

Wen Zhao Li*, Zhi Liang Huang, Ziqian Li, Juan Chen

Keywords:

Conductivity, Doping, Lanthanum Silicate, Solid Electrolyte

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