Effect on ionic conductivity of Na3+xZr2-xMxSi2PO12 (M=Y, La) by doping rare-earth elements

4th International Conference on Applied Materials and Manufacturing Technology

材料科学;机械制造

Zhang, Qingkai^1 ; Liang, Feng^1,2 ; Qu, Tao^1,2 ; Yao, Yaochun^1 ; Ma, Wenhui^1 ; Yang, Bing^1 ; Dai, Yongnian^1

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming

650093, China^1

State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming

650093, China^2

关键词: Migration efficiency;    Nasicon;    Nasicon structure;    Solid state method;    Y-Doping;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/423/1/012122/pdf
DOI  :  10.1088/1757-899X/423/1/012122

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

NASICON structure solid electrolyte with the composition of Na3+xZr2-xMxSi2PO12 (M = La, Y) were prepared by solid-state method. The effects of La and Y doping on the density and ionic conductivity of NASICON solid electrolyte were investigated. The results show that the doping of La and Y can improve the ionic conductivity of NASICON structure solid electrolyte because of the higher carrier concentration, migration efficiency, and higher density. The Na3.3Zr1.7La0.3Si2PO12 has the highest ionic conductivity of 6.7 × 10-3 S/cm at 25 °C.