Sulfur Solubility in Sulfolane Electrolytes Sutable for Lithium-Sulfur Batteries

The solubility of sulfur in sulfolane and solutions of lithium salts [LiBF 4 , LiClO 4 , LiPF 6 , LiSO 3 CF 3 and LiN(SO 2 CF 3 ) 2 ] in sulfolane, which are promising electrolytes for lithium-sulfur batteries, was determined by UV-vis spectroscopy. It was found that the solubility of sulfur in sulf...

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Bibliographic Details
Published in:Russian journal of general chemistry 2023-05, Vol.93 (5), p.1155-1161
Main Authors: Karaseva, E. V., Khramtsova, L. A., Shakirova, N. V., Kuzmina, E. V., Kolosnitsyn, V. S.
Format: Article
Language:English
Subjects:
Batteries
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Computer storage devices
Electrolytes
Lithium perchlorates
Lithium sulfur batteries
Organosulfur compounds
Solubility
Spectrum analysis
Sulfur
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Summary:The solubility of sulfur in sulfolane and solutions of lithium salts [LiBF 4 , LiClO 4 , LiPF 6 , LiSO 3 CF 3 and LiN(SO 2 CF 3 ) 2 ] in sulfolane, which are promising electrolytes for lithium-sulfur batteries, was determined by UV-vis spectroscopy. It was found that the solubility of sulfur in sulfolane at 30°C is 82.0 mM, and in sulfolane solutions of lithium salts (1 M) it is 4–9 times lower. The dependence of sulfur solubility on the concentration of lithium salts is not linear: it is 32.9 and 5.8 mM for sulfolane solutions containing 0.5 and 2.35 M of LiClO 4 , respectively.
ISSN:1070-3632
1608-3350
DOI:10.1134/S107036322305016X