Electrochemical Performance of Lithium Sulfur Batteries with Plasticized Polymer Electrolytes based on P(VdF-co-HFP)

被引：6

作者：

Park, Jeong Ho ^{[1
]}

Yeo, Sang-Yeob ^{[1
]}

Park, Jung-Ki ^{[2
]}

Lee, Yong Min ^{[1
]}

机构：

[1] Hanbat Natl Univ, Div Appl Chem & Biotechnol, Daejeon 305719, South Korea

[2] Korea Adv Inst Sci Engn, Dept Chem & Biomol Engn, Daejeon 305701, South Korea

来源：

JOURNAL OF THE KOREAN ELECTROCHEMICAL SOCIETY | 2010年 / 13卷 / 02期

关键词：

Lithium sulfur batteries; Plasticized polymer electrolytes; P (VdF-co-HFP); Tetra (ethylene glycol) dimethyl ether; Salt concentration; Charge-discharge;

D O I：

10.5229/JKES.2010.13.2.110

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The plasticized polymer electrolytes based on polyvinylidene fluoride-co-hexafluoropropylene (P(VdF-co-HFP)), tetra (ethylene glycol) dimethyl ether (TEGDME), and lithium perchlorate (LiClO4) are prepared for the lithium sulfur batteries by solution casting with a doctor-blade. The polymer electrolyte with EO : Li ratio of 16 : 1 shows the maximum ionic conductivity, 6.5 x 10(-4) S/cm at room temperature. To understand the effect of the salt concentration on the electrochemical performance, the polymer electrolytes are characterized using electrochemical impedance spectroscopy (EIS), infrared spectroscopy (IR), viscometer, and differential scanning calorimeter (DSC). The optimum concentration and mobility of the charge carriers could lead to enhance the utilization of sulfur active materials and the cyclability of the Li/S unit cell.

引用

页码：110 / 115

页数：6

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