title: Stability of the Solid Electrolyte Interface on the Li Electrode in Li-S Batteries.
abstract: By means of high performance liquid chromatography-mass spectroscopy, the concentration of sulfur and polysulfides was determined in nonaqueous electrolytes. The stability of sulfur and Li in eight electrolytes was studied quantitatively. It was found that sulfur reacted with Li in most of the commonly used electrolytes for lithium-sulfur batteries. The reaction products between sulfur and Li were qualitatively identified. In some cases, the solid electrolyte interface on the Li can successfully prevent the interaction between S and Li; however, it was found that the solid electrolyte interface was damaged by polysulfide ions.
authors.affiliation: Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin , Milwaukee, Wisconsin 53211, United States.
authors.forename: Dong
authors.initials: D
authors.lastname: Zheng
authors.affiliation: Chemistry Department, Brookhaven National Laboratory , Upton, New York 11973, United States.
authors.forename: Xiao-Qing
authors.initials: XQ
authors.lastname: Yang
authors.affiliation: Department of Mechanical Engineering, College of Engineering and Applied Science, University of Wisconsin , Milwaukee, Wisconsin 53211, United States.
authors.forename: Deyang
authors.initials: D
authors.lastname: Qu
keywords: HPLC; Li sulfur reaction; SEI stability; lithium−sulfur battery; polysulfide identification