Electrochemical Performance of Gel Polymer Electrolyte Prepared by Thermal Initiating Polymerization of Acrylates

Authors

Jin-dan PIAO, Dept.of Chem.,Wuhan Univ.,Wuhan 430072,China;
Li-xia YUAN, Dept.of Chem.,Wuhan Univ.,Wuhan 430072,China;
Xin-ping AI, Dept.of Chem.,Wuhan Univ.,Wuhan 430072,China;
Han-xi YANG, Dept.of Chem.,Wuhan Univ.,Wuhan 430072,China;
Yu-liang CAO, Dept.of Chem.,Wuhan Univ.,Wuhan 430072,China;

Corresponding Author

Xin-ping AI(xpai@whu.edu.cn)

Abstract

A gel polymer electrolyte was prepared by thermal initiating polymerization of the acrylates in the EC/EMC/DMC electrolyte solution at 100℃. The LiCoO_2/MCMB polymer cells were assembled and their electrochemical properties were evaluated at various charge-discharge rate and temperatures. The ionic conductivity of the polymer electrolyte containing 85wt.% liquid electrolyte is around 3.2×10~(-3)S·cm~(-1) at 20℃ and 5.6×10~(-4)S·cm~(-1)at -30℃ respectively. The gel polymer electrolyte has good electrochemical stability up to 4.5V versus Li/Li~(+).The first charge-discharge efficiency of the polymer cell at 0.2C rate is almost 92.1%. The discharge capacity of the cell at 1.0C rate is 95% of the capacity at the 0.2C rate and the discharge capacity of the cell at -20℃ is 72% of the capacity at the 20℃. The charge-discharge capacity of the polymer cell is stable with charge-discharge cycling.

Keywords

In-situ, Polymer electrolyte, Conductivity, Polymer lithium ion battery

DOI Link

https://doi.org/10.61558/2993-074X.1615

Publication Date

2005-02-28

Online Available Date

2005-02-28

Revised Date

2005-02-28

Received Date

2005-02-28

Recommended Citation

Jin-dan PIAO, Li-xia YUAN, Xin-ping AI, Han-xi YANG, Yu-liang CAO. Electrochemical Performance of Gel Polymer Electrolyte Prepared by Thermal Initiating Polymerization of Acrylates[J]. Journal of Electrochemistry, 2005 , 11(1): 62-66.
DOI: 10.61558/2993-074X.1615
Available at: https://jelectrochem.xmu.edu.cn/journal/vol11/iss1/12

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