A Comparative Study of Coordination in Gel Electrolytes Quantitative Analysis

1 September 1999

journal article
Published by The Electrochemical Society in Journal of the Electrochemical Society

Vol. 146 (9) , 3145-3149
https://doi.org/10.1149/1.1392446

Abstract

Changes in lithium ion coordination in polymer gel electrolyte materials have been studied by Fourier transform infrared (FTIR) spectroscopy as a function of composition. Two plasticizers, propylene carbonate and dimethyl sulfoxide, and two polymers, polyvinylidene fluoride‐co‐hexafluoropropylene (Kynar flex), and poly(ethylene glycol 400)dimethacrylate (PEG400DMA), have been compared, and their coordination to the cation has been determined. The salt used in all samples is lithium bis(trifluoromethane sulfone)imide, Li(TSFI). In order to determine the changes of lithium coordination from the resulting FTIR spectra, a quantitative band‐shape analysis of these spectra has been performed. © 1999 The Electrochemical Society. All rights reserved.

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