Electrochemical stability and conductivity enhancement of composite polymer electrolytes

被引:178
作者
Park, CH
Kim, DW
Prakash, J
Sun, YK [1 ]
机构
[1] Hanyang Univ, Dept Chem Engn, Seongdong Gu, Seoul 133791, South Korea
[2] Hanbat Natl Univ, Dept Chem Technol, Yusung Gu, Taejon 305719, South Korea
[3] IIT, Dept Environm Chem & Engn, Chicago, IL 60616 USA
关键词
composite polymer electrolyte; electrochemical stability; inorganic filler; ionic conductivity; lithium battery;
D O I
10.1016/S0167-2738(03)00025-0
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
The electrochemical stability behavior of the composite polymer electrolytes obtained by adding a fine Al2O3 powder (activated acidic, neutral, and basic) with a diameter of 5.8 nm to the poly(ethylene oxide) (PEO)-LiClO4 is described. The strong hydrogen bond between the surface group of Al2O3 and lithium salt anion prevents the decomposition of lithium salt anion. An enhancement of the ionic conductivity for the composite polymer electrolytes prepared with Al2O3 and BaTiO3 is described in terms of a reduction of crystallinity and an increase of charge carrier concentration. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:111 / 119
页数:9
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