Raman spectroscopic study of LiAlCl4/SOCl2/SO2 systems

✍ Scribed by M.C. Dhamelincourt; F. Wallart; P. Barbier; G. Mairesse; P. Descroix

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 285 KB
• Volume: 14
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(85)88014-9

✦ Synopsis

In the Li/SOC12 cell, the discharge process implies an evolution of the electrolyte composition from a binary mixture, LiAlC14/SOC12, to a ternary mixture, LiAlC14/SOC12/S02, and then to a final LiA1C14/S02 binary mixture.

Raman spectroscopic studies coupled with pressure measurements have been carried out at various temperatures (from 10 to 100 "C) on LiAlCl, SOCl,-SO, systems in order to identify. the species being formed in the electrolyte during the discharge and to understand the pressure evolution.

The Raman spectroscopic results show that the low pressures observed during the discharge process are due to the formation of the Li(SOCl,)(SO,)+ and Li( S02)s+ species which are stable throughout the temperature range studied.