COMPARATIVE ELECTROCHEMICAL STUDY OF NEW POLY(OXYETHYLENE)-LI SALT COMPLEXES

被引：77

作者：

BENRABAH, D ^{[1
]}

BARIL, D ^{[1
]}

SANCHEZ, JY ^{[1
]}

ARMAND, M ^{[1
]}

GARD, GG ^{[1
]}

机构：

[1] PORTLAND STATE UNIV,DEPT CHEM,PORTLAND,OR 97207

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1993年 / 89卷 / 02期

关键词：

D O I：

10.1039/ft9938900355

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：

The high ionic conductivity of alkali-metal salts complexed with poly(oxyethylene) (POE) has stimulated wide research on solid polymer electrolytes. Differential scanning calorimetry (DSC), cyclic voltammetry and conductivity measurements have been used to explore the fundamental electrochemical characteristics of two new promising Li salts: Li[(CF3SO2)2N] (LiTFSI) and Li[(CF3SO2)3C] (LiTriTFSM). A study of the ionic conductivity of membranes containing various concentrations of lithium salts as a function of temperature reveals that, when compared with all the other salts used so far, these new compounds markedly improve the conductivities, essentially as a consequence of lower crystallinity. The voltammograms between -0.2 and 3.9 V vs. Li+/Li-degrees show that the three anhydrous complexes POE-LiTFSI, POE-LiTriTFSM and POE-50%LiTFSI-50%LiTriTFSM have a wide electrochemical stability window.

引用

页码：355 / 359

页数：5

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