Ion Association and Salvation Studies of LiClO4/Ethylene Carbonate Electrolyte by Raman and Infrared Spectroscopy
- 1 October 1998
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 145 (10) , 3346-3350
- https://doi.org/10.1149/1.1838810
Abstract
Raman and infrared (IR) spectra of solutions of in ethylene carbonate (EC) have been measured. Spectral changes of the ring‐bending mode of EC with different contents are analyzed and an average solvation number of six is suggested for the ions in EC. Band splittings occur for the ν1, ν2, and ν4 modes of the perchlorate anion (at ca. 933, 462, and 624 cm−1 for free anion in the Raman spectrum, respectively). In the meantime the ν1 and ν4 modes are activated in the IR spectrum. These reveal a perturbation (change in symmetry) of the anions and formation of contact ions in concentrated solutions.Keywords
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