中国物理B ›› 2017, Vol. 26 ›› Issue (6): 68201-068201.doi: 10.1088/1674-1056/26/6/068201

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

A low cost composite quasi-solid electrolyte of LATP, TEGDME, and LiTFSI for rechargeable lithium batteries

Jie Huang(黄杰), Jia-Yue Peng(彭佳悦), Shi-Gang Ling(凌仕刚), Qi Yang(杨琪), Ji-Liang Qiu(邱纪亮), Jia-Ze Lu(卢嘉泽), Jie-Yun Zheng(郑杰允), Hong Li(李泓), Li-Quan Chen(陈立泉)   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, P. O. Box 4588, Beijing 100049, China
  • 收稿日期:2017-03-15 修回日期:2017-04-05 出版日期:2017-06-05 发布日期:2017-06-05
  • 通讯作者: Hong Li E-mail:hli@iphy.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 52315206 and 51502334), the Funds from the Ministry of Science and Technology of China (Grant No. 2016YFB0100100), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA09010000), and the Foundation from Beijing Municipal Science & Technology Commission (Grant No. D171100005517001).

A low cost composite quasi-solid electrolyte of LATP, TEGDME, and LiTFSI for rechargeable lithium batteries

Jie Huang(黄杰)1,2, Jia-Yue Peng(彭佳悦)1,2, Shi-Gang Ling(凌仕刚)1,2, Qi Yang(杨琪)1,2, Ji-Liang Qiu(邱纪亮)1,2, Jia-Ze Lu(卢嘉泽)1,2, Jie-Yun Zheng(郑杰允)1,2, Hong Li(李泓)1,2, Li-Quan Chen(陈立泉)1,2   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, P. O. Box 4588, Beijing 100049, China
  • Received:2017-03-15 Revised:2017-04-05 Online:2017-06-05 Published:2017-06-05
  • Contact: Hong Li E-mail:hli@iphy.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 52315206 and 51502334), the Funds from the Ministry of Science and Technology of China (Grant No. 2016YFB0100100), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA09010000), and the Foundation from Beijing Municipal Science & Technology Commission (Grant No. D171100005517001).

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摘要：

The composite quasi solid state electrolytes (CQSE) is firstly synthesized with quasi solid state electrolytes (QSE) and lithium-ion-conducting material Li1.4Al0.4Ti1.6(PO4)3 (LATP), and the QSE consists of[LiG4][TFSI] with fumed silica nanoparticles. Compared with LATP, CQSE greatly improves the interface conductance of solid electrolytes. In addition,it has lower liquid volume relative to QSE. Although the liquid volume fraction of CQSE drops to 60%, its conductivity can also reach 1.39×10-4 s/cm at 20℃. Linear sweep voltammetry (LSV) is conducted on each composite electrolyte. The results show the possibility that CQSE has superior electrochemical stability up to 5.0 V versus Li/Li+1. TG curves also show that composite electrolytes have higher thermal stability. In addition, the performance of Li/QSE/LiMn2O4 cells and Li/CQSE/LiMn2O4 is evaluated and shows good electrochemical characteristics at 60℃.

关键词: quasi solid state electrolytes, Li1.4Al0.4Ti1.6(PO4)3, conductivities

Abstract:

The composite quasi solid state electrolytes (CQSE) is firstly synthesized with quasi solid state electrolytes (QSE) and lithium-ion-conducting material Li1.4Al0.4Ti1.6(PO4)3 (LATP), and the QSE consists of[LiG4][TFSI] with fumed silica nanoparticles. Compared with LATP, CQSE greatly improves the interface conductance of solid electrolytes. In addition,it has lower liquid volume relative to QSE. Although the liquid volume fraction of CQSE drops to 60%, its conductivity can also reach 1.39×10-4 s/cm at 20℃. Linear sweep voltammetry (LSV) is conducted on each composite electrolyte. The results show the possibility that CQSE has superior electrochemical stability up to 5.0 V versus Li/Li+1. TG curves also show that composite electrolytes have higher thermal stability. In addition, the performance of Li/QSE/LiMn2O4 cells and Li/CQSE/LiMn2O4 is evaluated and shows good electrochemical characteristics at 60℃.

Key words: quasi solid state electrolytes, Li1.4Al0.4Ti1.6(PO4)3, conductivities

中图分类号:  (Lithium-ion batteries)

  • 82.47.Aa
65.40.gk (Electrochemical properties) 82.45.Gj (Electrolytes)