@article{XU2024, 
author = {Yao XU and Limin LIU and Xiaoliang ZHOU and Weilin GUO and Jie LI and Xinru GUO},
title = {Preparation and Properties of Na5-xY1-xZrxSi4O12 Sodium-ion Ceramic Solid Electrolyte},
year = {2024},
journal = {Journal of Ceramics},
volume = {45},
number = {4},
pages = {711-719},
keywords = {sodium-ion battery, solid-state electrolyte, Na5-xY1-xZrxSi4O1, ionic conductivity, ionic doping},
url = {https://www.sciopen.com/article/10.13957/j.cnki.tcxb.2024.04.008},
doi = {10.13957/j.cnki.tcxb.2024.04.008},
abstract = {In recent years, sodium-ion solid-state batteries have gradually attracted attentions as a member of rechargeable batteries. In solid-state batteries, liquid electrolytes are avoided, thus diminishing the risks such as leakage and explosion. At present, it is still a challenge to increase the ionic conductivity of solid-state electrolytes. In this study, Zr4+ was introduced into Na5YSi4O12 (NYS), where NaNO3, YN3O9·6H2O, C8H20O4Si and ZrO(NO3)2·xH2O were used as starting materials. A solution-assisted solid-phase reaction method (SASSR) was employed to prepare the solid electrolytes Na5-xY1-xZrxSi4O12 (x=0.04, 0.06, 0.08, 0.10, 0.12) with hexagonal crystal structure. The effect of Zr4+ on ionic conductivity of Na5-xY1-xZrxSi4O12 (NYZS) was studied, while the maximum ionic conductivity of 2.13 mS·cm-1 was achieved at x=0.08, with an activation energy of 0.222 eV. Compared with that of NYS, the conductivity of NYZS is greatly increased, due to the presence of sodium vacancies after Zr4+ doping. In summary, Na5-xY1-xZrxSi4O12 is a competitive sodium-ion solid-state electrolyte, which is expected to become promising candidate for new generation of energy conversion.}
}