Bo Zhai, Shuzeng Hou*, Jie Zhang, Xue Cheng, Zhiming Xu, Chengyuan Luo
School of Mechanical Engineering, Sichuan University of Light and Chemical Technology, Yibin 64400, China.
*Corresponding author: Shuzeng Hou
Abstract
For a long time, safety issues have been the bottleneck restricting the development and application of lithium batteries. Replacing liquid electrolytes with solid electrolytes is one of the most effective ways to overcome this bottleneck. High ionic conductivity, low electronic conductivity, and good thermal stability are ideal properties that solid electrolytes should have. The solid electrolyte Li7La3Zr2O12 (LLZO) not only has these properties, but also has good electrochemical stability in contact with Li anode and great practical potential, Li7La3Zr2O12 has always been a research hotspot in the field of batteries. The effects of lithium fluoride on crystal structure, micromorphology, sintering temperature and ionic conductivity of Li7La3Zr2O12 ceramics were studied. The XRD pattern showed that the LLZO crystal structure did not change significantly when lithium fluoride fuel was added. Sample SEM photographs show that a special microstructure was found with grain boundaries virtually removed, creating closed pores in the ceramic microstructure, which contributes to negligible grain boundaries and high total ionic conductivity. With the addition of 3% (mass fraction) of lithium fluoride to the density of LLZO ceramics, ionic conductivity can be achieved.
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How to cite this paper
Study on LiF Assisted Firing of Li7La3Zr2O12
How to cite this paper: Bo Zhai, Shuzeng Hou, Jie Zhang, Xue Cheng, Zhiming Xu, Chengyuan Luo. (2022) Study on LiF Assisted Firing of Li7La3Zr2O12. OAJRC Material Science, 4(1), 26-30.
DOI: http://dx.doi.org/10.26855/oajrcems.2022.12.005