Raman and NMR analysis of LiClO4 concentrated solutions in ethylene carbonate propylene carbonate

被引：39

作者：

Cazzanelli, E

Mustarelli, P

Benevelli, F

Appetecchi, GB

Croce, F

机构：

[1] UNIV CALABRIA,DEPT PHYS,I-87036 COSENZA,ITALY

[2] UNIV PAVIA,CNR,CSTE,I-27100 PAVIA,ITALY

[3] UNIV PAVIA,DEPT CHEM PHYS,I-27100 PAVIA,ITALY

[4] UNIV PAVIA,CTR GRANDI STRUMENTI,I-27100 PAVIA,ITALY

[5] UNIV ROMA LA SAPIENZA,DEPT CHEM,I-00185 ROME,ITALY

来源：

SOLID STATE IONICS | 1996年 / 86-8卷

关键词：

electrolytes; LiClO4; EC; PC; Raman; NMR;

D O I：

10.1016/0167-2738(96)00154-3

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：

A comparative Raman and C-13-NMR study has been performed on LiClO4 concentrated solutions in ethylene carbonate (EC)-propylene carbonate (PC), which are of interest for electrochemical devices like secondary lithium batteries. A phase transition has been detected near a ratio N = [Li+]/[EC + PC] congruent to 0.5. Below this threshold, Li+ ions are relatively free to move and are solvated by EC and PC with a coordination number, n, which approaches similar to 2. In more concentrated solutions the cations seem to form a complex by ''sandwiching'' an EC and a PC molecule.

引用

页码：379 / 384

页数：6

共 17 条

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