Enhanced ionic conductivity in PEO-LiClO4 hybrid electrolytes by structural modification

被引：32
|
作者：
Lee, Jin-Kyung
Lee, Yong-Ji
Chae, Won-Seok
Sung, Yun-Mo [1 ]
机构：
[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea
[2] Daejin Univ, Dept Mat Sci & Engn, Pochun Si 487711, Kyunggi Do, South Korea
[3] Daejin Univ, Dept Chem, Pochun Si 487711, Kyunggi Do, South Korea
来源：
JOURNAL OF ELECTROCERAMICS | 2006年 / 17卷 / 2-4期
关键词：
sol-gel; hybrid; PEO; filler; ionic conductivity;
D O I：
10.1007/s10832-006-7672-7
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Poly(ethylene oxide)-LiClO4-TiO2 organic-inorganic hybrids were synthesized for Li-polymer battery electrolytes using sol-gel processing. The hybrids containing TiO2 component showed the uniform film formation and also increased ionic conductivity. The hybrid films containing 10 wt% TiO2 showed the smooth surface morphologies and also the highest ionic conductivity. The molecular-level hybrid formation between PEO and TiO2 components was identified using FTIR analyses. The hybrids containing TiO2-Al2O3 mixtures showed the enhanced ionic conductivity compared to those containing only TiO2 most probably due to the Lewis acidic group formation at the surface of Al2O3 components. The PEO-LiClO4-TiO2-Al2O3 hybrids showed high stability both in ionic conductivity and crystallinity. By the sol-gel processing two inorganic components were successfully introduced in the PEO matrix and high-performance solid electrolytes were achieved.
引用
收藏
页码：941 / 944
页数：4
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