Composite electrolytes based on low molecular weight polyglycols

被引：26

作者：

Marcinek, M ^{[1
]}

Zalewska, A ^{[1
]}

Zukowska, G ^{[1
]}

Wieczorek, W ^{[1
]}

机构：

[1] Warsaw Univ Technol, Fac Chem, PL-00664 Warsaw, Poland

来源：

SOLID STATE IONICS | 2000年 / 136卷

关键词：

poly(ethylene glycol); lithium perchlorate; composite electrolytes; ionic associations;

D O I：

10.1016/S0167-2738(00)00580-4

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：

In the present work ionic conduction is studied in poly(ethylene glycol) (PEG)-LiClO4-alpha -Al2O3 electrolytes over wide salt concentration and temperature ranges. Composite electrolytes with alpha -Al2O3 containing inert surface groups are examined. Conductivity enhancement was observed compared to PEG-LiClO4, electrolytes in the 0.5-5 mol kg(-1) salt concentration range. Conductivity studies are coupled to viscosity and DSC experiments which helps us to establish the relation between salt concentration and viscosity (flexibility) of the polymer host. The ion-polymer interactions are studied on the basis of FT-IR spectroscopy and, particularly, changes in the intensity of the IR modes characteristic of C-O-C vibrations. Finally, the ionic associations are discussed on the basis of the Fuoss-Krauss formalism. These Studies show the reduction in the ion-pair formation for composite polymeric electrolytes in the entire concentration range studied. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：1175 / 1179

页数：5

共 11 条

[1]

Bruce P. G., 1995, SOLID STATE ELECTROC

[2]

BRUCE PG, 1995, SOLID STATE ELECTRON, pCH5

[3] Nanocomposite polymer electrolytes for lithium batteries [J].