The influence of inert oxide fillers on poly(ethylene oxide) and amorphous poly(ethylene oxide) based polymer electrolytes

被引：66
作者：
Johansson, P
Ratner, MA
Shriver, DF
机构：
[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA
[2] Northwestern Univ, Mat Res Ctr, Evanston, IL 60208 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2001年 / 105卷 / 37期
关键词：
D O I：
10.1021/jp010868r
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：
An FT-Raman study was performed on lithium salt/polymer/nanosized inert oxide filler (SiO2, Al2O3) systems. Molecular spectroscopy suggests that there is little effect of the filler particles on the "free" anion/ion-pair/ higher aggregate equilibria. Raman line widths indicate enhanced anion disorder when a small amount of filler is introduced. Similarly, DSC measurement indicates a reduction of crystallinity. By contrast, fully amorphous polymer samples display broader Raman line widths and higher glass transition temperatures as the filler concentration is increased, with concomitant lower ion conductivity. The influence of the fillers differs in proportion to the extent of crystallinity of the polymer-salt complex, but within our experimental range the particle size or composition of the filler has little influence on ionic conductivity.
引用
收藏
页码：9016 / 9021
页数：6
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