In situ Raman spectra of the discharge products of calcium and lithium-anoded thionyl chloride cells — sulphur dioxide generation in oxyhalide systems

A cell has been constructed that allows a calcium or lithium-anoded oxyhalide cell of conventional composition to be analysed for catholyte-soluble discharge products using laser Raman spectroscopy. Both cells showed the presence of sulphur dioxide solvated by thionyl chloride. Species of the type M...

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Bibliographic Details
Published in:Journal of power sources 1991, Vol.34 (1), p.1-11
Main Authors: Hagan, W.P., Sargeant, D.G.
Format: Article
Language:English
Subjects:
Applied sciences
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Energy accumulation
Exact sciences and technology
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Summary:A cell has been constructed that allows a calcium or lithium-anoded oxyhalide cell of conventional composition to be analysed for catholyte-soluble discharge products using laser Raman spectroscopy. Both cells showed the presence of sulphur dioxide solvated by thionyl chloride. Species of the type M(SOCl 2)(SO 2) n+ (AlCl 4) n − could only be detected in cells having calcium or lithium anodes with LiAlCl 4 as the supporting electrolyte in thionyl chloride. Vapour pressure measurements of discharging cells confirmed that Ca(AlCl 4) 2 was less likely to form a complex with sulphur dioxide than the analogous lithium salt.
ISSN:0378-7753
1873-2755
DOI:10.1016/0378-7753(91)85018-R