Ion association and solvation studies of LiClO4 ethylene carbonate electrolyte by Raman and infrared spectroscopy

被引：55

作者：

Wang, ZX ^{[1
]}

Huang, BY ^{[1
]}

Xue, RJ ^{[1
]}

Chen, LQ ^{[1
]}

Huang, XJ ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Lab Solid State Ion, Beijing 100080, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1998年 / 145卷 / 10期

关键词：

D O I：

10.1149/1.1838810

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Raman and infrared (IR) spectra of solutions of LiClO4 in ethylene carbonate (EC) have been measured. Spectral changes of the ring-bending mode of EC with different LiClO4 contents are analyzed and an average solvation number of six is suggested for the Li+ ions in EC. Band splittings occur for the nu(1), nu(2), and nu(4) modes of the perchlorate anion (at ca. 933, 462, and 624 cm(-1) for free ClO4- anion in the Raman spectrum, respectively). In the meantime the nu(1) and nu(4) modes are activated in the IR spectrum. These reveal a perturbation (change in symmetry) of the ClO4- anions and formation of contact ions in concentrated solutions.

引用

页码：3346 / 3350

页数：5

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