Abstract
The solubility of sulfur in sulfolane and sulfolane solutions of lithium salts [LiBF4, LiClO4, LiPF6, LiSO3CF3 and LiN(SO2CF3)2], 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) is 4-9 times lower than in pure sulfolane. 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 of 0.5 М LiClO4 and 2.35 M LiClO4, respectively.
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