无机材料学报2011，Vol.26Issue(10)：1043-1048,6.DOI:10.3724/SP.J.1077.2011.01043
La9.33Si6O26基氧离子导电复合材料的制备与导电性
Fabrication and Conductivity of La9.33Si6O26-based Composite Oxygen-ionic Conductor
摘要
Abstract
The oxygen-ionic conductor of La9.33Si6O26-10wt% Zro.86Yo.14O1.92 composite material was prepared by using a modified co-precipitation method. X-ray diffraction, scanning electron microscope and complex impedance were adopted to investigate the phase component, microstructures and conductivities of the composite material, respectively. The results show that the average grain size of the as-calcined powder is 35 nm and the average particle size of the as-sintered composite ceramic is about 500 nm. The conductivities of the composite ceramic are higher than those of the single phase La9.33Si6O26 and Zr0.86Y0.14O1.92 ceramic at the temperatures from 300℃ to 700℃. The conductivity of the composite ceramic is one order in magnitude higher than that of polycrystalline La9.33Si6O26 at 700 ℃. The conduction mechanism of the composite material is discussed by the analysis of impedance spectra and electric modulus spectra.关键词
La9.33Si6O26/Zr0.86Y0.14O1.92/复合材料/共沉淀法/离子导电性Key words
La9.33Si6O26/10wt% Zro.86Yo.14O1.92/ composite material/ co-precipitation method/ ionic conductivity分类
通用工业技术引用本文复制引用
刘超峰,张鸿,夏俊霄,李根,李志成..La9.33Si6O26基氧离子导电复合材料的制备与导电性[J].无机材料学报,2011,26(10):1043-1048,6.基金项目
国家自然科学基金(50872155) （50872155）
