Structure and conductive properties of poly(ethylene oxide)/layered double hydroxide nanocomposite polymer electrolytes

被引：64

作者：

Liao, CS ^{[1
]}

Ye, WB ^{[1
]}

机构：

[1] Yuan Ze Univ, Dept Chem Engn, Taoyuan 320, Taiwan

来源：

ELECTROCHIMICA ACTA | 2004年 / 49卷 / 27期

关键词：

poly(ethylene oxide); layered double hydroxide; nanocomposite; polymer electrolyte; ionic conductivity;

D O I：

10.1016/j.electacta.2004.06.018

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The oligo(ethylene oxide) modified layered double hydroxide (LDH) prepared by template method was added as a nanoscale nucleating agent into poly(ethylene oxide) (PEO) to form PEO/OLDH nanocomposite electrolytes. The effects of OLDH addition on morphology and conductivities of nanocomposite electrolytes were studied using wide-angle X-ray diffractometer, polarized optical microscopy, differential scanning calorimetry and ionic conductivity measurement. The results show that the exfoliated morphology of nanocomposites is formed due to the surface modification of LDH layers with PEO matrix compatible oligo(ethylene oxide)s. The nanoscale dispersed OLDH layers inhibit the crystal growth of PEO crystallites and result in a plenty amount of intercrystalline grain boundary within PEO/OLDH nanocomposites. The ionic conductivities of nanocomposite electrolytes are enhanced by three orders of magnitude compared to the pure PEO polymer electrolytes at ambient temperature. It can be attributed to the ease transport of Li+ along intercrystalline amorphous phase. This novel nanocomposite electrolytes system with high conductivities will be benefited to fabricate the thin-film type of Li-polymer secondary battery. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：4993 / 4998

页数：6

共 28 条

[1] Polymer-layered silicate nanocomposites: Preparation, properties and uses of a new class of materials [J].