Electrochemical characteristics of two types of PEO-based composite electrolyte with functional SiO2

被引：109

作者：

Kim, JW ^{[1
]}

Ji, KS ^{[1
]}

Lee, JP ^{[1
]}

Park, JW ^{[1
]}

机构：

[1] Hanyang Univ, Div Engn & Mat Sci, Dept Engn Met, Seongdong Ku, Seoul 133791, South Korea

来源：

JOURNAL OF POWER SOURCES | 2003年 / 119卷

关键词：

polyethylene oxide; composite electrolyte; silicon dioxide;

D O I：

10.1016/S0378-7753(03)00263-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This work has investigated that the electrochemical properties of PEO-lithium bis(perfluoroethylsulfonyl)imide (LiBETI)-SiO2 with different surface groups. The ac impedance, cyclic voltammetry, scanning electron microscope (SEM), X-ray diffraction (XRD) were used for understanding electrochemical characteristics of prepared composite electrolytes. Composite electrolytes prepared with SiO2 covered with trimethylsilyl exhibited good electrochemical properties. The ionic conductivity of composite polymer electrolytes (CPE) reached a maximum of about 1.5 x 10(-5) S/cm at 25 degreesC. This result was obtained since SiO2 covered with trimethylsilyl is suitable for increasing dispersability as well as not impeding the role of the SiO2 surface. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：415 / 421

页数：7

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