Microstructure and Ionic Conductivity of Sb-doped Li7La3Zr2O12 Ceramics

doi:10.3724/SP.J.1077.2013.13428

Journal of Inorganic Materials ›› 2014, Vol. 29 ›› Issue (2): 220-224.DOI: 10.3724/SP.J.1077.2013.13428

• Research Letter • Previous Articles

Microstructure and Ionic Conductivity of Sb-doped Li₇La₃Zr₂O₁₂ Ceramics

CAO Zhen-Zhu¹, REN Wei¹, LIU Jin-Rong¹, LI Guo-Rong², GAO Yan-Fang¹, FANG Ming-Hao³, HE Wei-Yan¹

(1. Chemical Engineering College of Inner Mongolia University of Technology, Hohhot 010051, China; 2. Key Laboratory of Inorganic Function Material and Device, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 3. School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China)

Received:2013-08-22 Revised:2013-10-29 Published:2014-02-20 Online:2014-01-17
About author:CAO Zhen-Zhu(1977–), male, associate professor. E-mail: czz03@163.com
Supported by:
National Natural Science Foundation of China (51102130); Program for Key Laboratory of Inorganic Function Material and Device, Chinese Academy of Sciences (KLIFMD-2011-01)

Abstract

Abstract: The garnet-related oxides Li_7-xLa₃Zr_2-xSb_xO₁₂ (x = 0, 0.075) were prepared by solid-state reaction method. Crystal structure, microstructure, conductivity, and element distribution were characterized for the pure and Sb-doped Li₇La₃Zr₂O₁₂. Ionic conductivity of the Li₇La₃Zr₂O₁₂ is enhanced by Sb doping. An amorphous Li-La-Zr-Al-O thin film which is formed on the grain boundary of Sb-doped samples not only suppresses the abnormal grain growth but also eliminates the pores on the grain boundary. The ionic conductivity of Sb doped Li_7-xLa₃Zr_2-xSb_xO₁₂ ceramic with x = 0.075 sintered at 1160℃ reaches about 3.40×10^-4 S/cm.

Key words: solid electrolyte, ionic conductivity, microstructure, doping

CLC Number:

TM911

CAO Zhen-Zhu, REN Wei, LIU Jin-Rong, LI Guo-Rong, GAO Yan-Fang, FANG Ming-Hao, HE Wei-Yan. Microstructure and Ionic Conductivity of Sb-doped Li₇La₃Zr₂O₁₂ Ceramics[J]. Journal of Inorganic Materials, 2014, 29(2): 220-224.

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Microstructure and Ionic Conductivity of Sb-doped Li₇La₃Zr₂O₁₂ Ceramics

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