Morphology and ionic conductivity of poly(ethylene oxide)-poly(vinyl acetate)-LiClO4 polymer electrolytes

被引：17

作者：

Animitsa, IE ^{[1
]}

Kruglyashov, AL ^{[1
]}

Bushkova, OV ^{[1
]}

机构：

[1] Ural State Univ, Dept Chem, Ekaterinburg 620083, Russia

来源：

SOLID STATE IONICS | 1998年 / 106卷 / 3-4期

关键词：

polymer electrolytes; ionic conductivity; morphology;

D O I：

10.1016/S0167-2738(97)00503-1

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 this work an attempt has been made to enhance the ionic conductivity of P(EO)(10)LiClO4 using amorphous poly(vinyl acetate) (PVAc) as additives. Impedance measurements have shown that the concentration dependence of the ionic conductivity undergoes a maximum (sigma = 10(-5) Scm(-1)) at 5-15 mol.% PVAc at 25 degrees C. Small PVAc additives, located in amorphous regions between the lamellae within spherulite and increased of the surface layer disordering, reduce the overall poly(ethylene oxide) (PEO)-crystallisation rate and decrease the melting temperature of the PEG-spherulites. The retaining of a high degree of crystalline phase PEG-salt dispersity promotes the increase in the ionic conductivity.

引用

页码：321 / 327

页数：7

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