Solid polymer electrolyte for lithium ion batteries

被引：0
|
作者：
Wang H. [1 ]
Xie W. [2 ]
Guo C. [3 ]
机构：
[1] School of Chemistry and Chemical Engineering, Mianyang Normal University, Mianyang
[2] Sichuan Rich Technology Development Co., Ltd, Chengdu
[3] Tianjin EV Energies Co., Ltd, Tianjin
来源：
Cailiao Daobao/Materials Review | 2016年 / 30卷 / 04期
关键词：
Li-ion battery; PEO; PFPE; Solid polymer electrolyte;
D O I：
10.11896/j.issn.1005-023X.2016.08.007
中图分类号：
学科分类号：
摘要：
PEO/PFPE/LiTFSI solid polymer electrolyte was prepared for Li-ion batteries in order to replace the traditional liquid electrolyte. Its performance was characterized by means of SEM, AC impedance, Steady-state current method and constant current constant voltage charge and discharge. The results showed that PEO/PFPE/LiTFSI (m(PFPE):m(PEO)=0.6) solid polymer electrolyte has a conductivity (2.6×10-3 S·cm-1) of the same of magnitude with the liquid electrolyte(ion conductivity: 8.2×10-3 S·cm-1), and lithium ion transport number increased with increase of the PFPE content. Compared with liquid electrolyte lithium ion battery, solid polymer electrolyte battery has better cycling capacity retaining (SPE: 88.1% and liquid electrolyte: 64.5% after 500 cycles) and high temperature safety performance. Solid polymer electrolyte battery has no obvious volume change while the liquid electrolyte lithium ion battery blow out or catch fire at 130℃ and 150℃ for 1-2 h. © 2016, Materials Review Magazine. All right reserved.
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页码：33 / 36
页数：3
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