Lithium-doped apatite-type lanthanum silicate prepared by combustion method and its properties

Qichang Wang; Zhiliang Huang

doi:10.1117/12.3015141

6 February 2024 Lithium-doped apatite-type lanthanum silicate prepared by combustion method and its properties

Qichang Wang, Zhiliang Huang

Proceedings Volume 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023); 129791A (2024) https://doi.org/10.1117/12.3015141
Event: 9th International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 2023, Guilin, China

Abstract

To improve the conductivity of apatite-type lanthanum silicate by doping Li+, this paper prepared La_10-xLi_xSi₆O_27-x (x=0, 0.1, 0.2, 0.3, 0.4) by urea-combustion method. XRD analysis showed that the doping of Li+ did not destroy the apatite structure of the sample, and the doped volume was smaller than that of the undoped; The optimal sintering temperature is determined to be 1550℃ by combining linear shrinkage, relative density and SEM topography; EIS test shows that Li doping can effectively improve the conductivity of the sample. When the doping amount x=0.2, La_9.8Li0_.2Si₆O_26.8 has the best conductivity of 4.1×10^-4 S cm-1 (the test temperature is 600℃), However, the conductivity of La₁₀Si₆O₂₇ at 600℃ is 3.22×10^-4 Sꞏcm^-1; the Arrhenius curve shows that the activation energy of the sample shows a downward trend with the increase of the dosage.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Qichang Wang and Zhiliang Huang "Lithium-doped apatite-type lanthanum silicate prepared by combustion method and its properties", Proc. SPIE 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 129791A (6 February 2024); https://doi.org/10.1117/12.3015141

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