Improved room temperature ionic conductivity of Ta and Ca doped Li7La3Zr2O12 via a modified solution method

被引：46
作者：
Chen, Xiaolan [1 ]
Cao, Tianxiang [1 ]
Xue, Mingzhe [1 ]
Lv, Hong [1 ]
Li, Bing [1 ]
Zhang, Cunman [1 ]
机构：
[1] Tongji Univ, Sch Automot Studies, Clean Energy Automot Engn Ctr, Shanghai 201804, Peoples R China
来源：
SOLID STATE IONICS | 2018年 / 314卷
关键词：
Solid-state electrolyte; Solution method; Li(7)La(3)Zr(2)o(12); Ta and Ca doping; SOL-GEL SYNTHESIS; LI+ CONDUCTIVITY; LITHIUM GARNETS; AL; ELECTROLYTE; DENSIFICATION; SUBSTITUTION; SPECTROSCOPY; FILMS; GA;
D O I：
10.1016/j.ssi.2017.11.027
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ta and Ca doped Li(7)La(3)Zr(2)o(12) is synthesized via a modified solution method without producing toxic NOx. Li7-x+yCayLa3-yZr2-xTaxO12 series with x range from 0 to 2 and y range from 0 to 0.05 are prepared and their ionic conductivities are found to be greatly enhanced by doping Ta and Ca to a certain amount. The optimized amount of Ta doped in Li7-xLa3Zr2-xTaxO12 is found to be x = 0.6, corresponding to a total ionic conductivity of 1.95 x 10(-4) S cm(-1). When further doped with Ca, a synergetic effect from Ta and Ca is observed and a high ionic conductivity of 2.84 x 10(-4) S cm(-1) is achieved in Li6.45Ca0.05La2.9Ta0.6Zr1.4O12. The simple solution method proposed in this work is considered to be potentially applied as a general methodology for synthesizing metal doped Li7La3Zr2O12.
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收藏
页码：92 / 97
页数：6
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