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

Literature Information

Publication Date 2003-04-29
DOI 10.1039/B302013D
Impact Factor 3.676
Authors

R. A. Silva, G. Goulart Silva, R. L. Moreira, M. A. Pimenta


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Abstract

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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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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