The effects of salt concentration on cation complexation in triblock-polyether electrolyte

被引：15

作者：

Silva, RA

Silva, GG

Moreira, RL

Pimenta, MA

机构：

[1] Univ Fed Minas Gerais, Dept Quim, BR-31270901 Belo Horizonte, MG, Brazil

[2] Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2003年 / 5卷 / 11期

关键词：

D O I：

10.1039/b302013d

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：

Thermogravimetry and differential scanning calorimetry (TG and DSC), Raman spectroscopy and impedance measurements were performed as a function of LiCF3SO3 concentration and temperature in low molecular weight triblock-polyether (PEG-PPG-PEG)-based electrolytes. Samples were prepared in a broad range of concentrations with molar ratios O: Li from 142 to 3. All the results indicated that a change in the complexation mode occurs at O: Li = 21. Initially a cation complexation dominated by PEG and - OH end-capped is present, and after the saturation of these sites at O: Li = 21, the complexation through the PPG block starts to occur.

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收藏

页码：2424 / 2428

页数：5

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