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The Electrochemical Society, Journal of The Electrochemical Society, 1(162), p. A203-A206

DOI: 10.1149/2.1011501jes

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Quantitative Chromatographic Determination of Dissolved Elemental Sulfur in the Non-Aqueous Electrolyte for Lithium-Sulfur Batteries

Journal article published in 2014 by Dong Zheng, Xuran Zhang, Chao Li, Meaghan E. McKinnon, Rachel G. Sadok, Deyu Qu, Xiqian Yu ORCID, Hung-Sui Lee, Deyang Qu, Xiao-Qing Yang
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

A fast and reliable analytical method is reported for the quantitative determination of dissolved elemental sulfur in non-aqueous electrolytes for Li-S batteries. By using high performance liquid chromatography with aUVdetector, the solubility of S in 12 different pure solvents and in 22 different electrolytes was determined. It was found that the solubility of elemental sulfur is dependent on the Lewis basicity, the polarity of solvents and the salt concentration in the electrolytes. In addition, the S content in the electrolyte recovered from a discharged Li-S battery was successfully determined by the proposed HPLC/UV method. Thus, the feasibility of the method to the online analysis for a Li-S battery is demonstrated. Interestingly, the S was found super-saturated in the electrolyte recovered from a discharged Li-S cell.