Quantitative Chromatographic Determination of Dissolved Elemental Sulfur in the Non-Aqueous Electrolyte for Lithium-Sulfur Batteries. Issue 1 (1st January 2015)

• Record Type: Journal Article
• Authors: Zheng, Dong; Zhang, Xuran; Li, Chao; McKinnon, Meaghan E.; Sadok, Rachel G.; Qu, Deyu; Yu, Xiqian; Lee, Hung-Sui; Yang, Xiao-Qing; Qu, Deyang
• Is Part Of: Journal of the Electrochemical Society. Volume 162:Issue 1(2015)
• Page Start: A203
• Page End: A206
• Publication Date: 2015-01-01
• Subjects: Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.1011501jes
• Languages: English
• ISSNs: 0013-4651

Abstract

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 a UV detector, 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.