Synthesis and Conductivity of Oxyapatite Ionic Conductor La10-xVx（SiO4）6O3+x

袁文辉; 申荣平; 李莉

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Synthesis and Conductivity of Oxyapatite Ionic Conductor La_10-xV_x（SiO₄）₆O_3+x

Updated：2026-01-06

- Synthesis and Conductivity of Oxyapatite Ionic Conductor La_10-xV_x（SiO₄）₆O_3+x
- Chinese Journal of Chemical Engineering Vol. 18, Issue 2, Pages: 328-332(2010)
- Affiliations：
  
  1. School of Chemical and Energy Engineering, South China University of Technology,Guangzhou,China,510640
  2. College of Environmental Science and Engineering, South China University of Technology,Guangzhou,China,510640
- Author bio：
- Funds：
- DOI：
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- Published：2010
- Accepted：
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摘要

Abstract

Apatite-lanthanum silicate has attracted considerable interest in recent years due to its high oxide ion conductivity.In this paper

V-doped samples La

10-x

(SiO

)

3+x

(0≤x≤1.5) were prepared by sol-gel method and the influences of V-dopant content on calcining temperature and conductivity were reported.The samples were characterized by thermal analysis(TG-DSC)

X-ray diffraction(XRD) and scanning electron micrograph(SEM) . The apatite was obtained at 800℃

a relatively low temperature in comparison to 1500℃ with the conventional solid-state method.The ceramic pellets sintered at 1200℃ for 5 h showed a higher relative density than La

9.33

pellets sintered at 1400℃ for 20 h.The conductivities of samples were measured by electrochemical impedance spectroscopy.The conductivity was improved with the increase of V-dopant content on La site.

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