title: Carbon Disulfide Cosolvent Electrolytes for High-Performance Lithium Sulfur Batteries.
abstract: Development of lithium sulfur (Li-S) batteries with high Coulombic efficiency and long cycle stability remains challenging due to the dissolution and shuttle of polysulfides in electrolyte. Here, a novel additive, carbon disulfide (CS2), to the organic electrolyte is reported to improve the cycling performance of Li-S batteries. The cells with the CS2-additive electrolyte exhibit high Coulombic efficiency and long cycle stability, showing average Coulombic efficiency >99% and a capacity retention of 88% over the entire 300 cycles. The function of the CS2additive is 2-fold: (1) it inhibits the migration of long-chain polysulfides to the anode by forming complexes with polysulfides and (2) it passivates electrode surfaces by inducing the protective coatings on both the anode and the cathode.
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, P. R. China.|National Center for Inorganic Mass Spectrometry in Shanghai, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, P. R. China.|University of Chinese Academy of Sciences, Chinese Academy of Sciences , Shanghai 200050, P. R. China.
authors.forename: Sui
authors.initials: S
authors.lastname: Gu
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, P. R. China.
authors.forename: Zhaoyin
authors.identifier: http://orcid.org/0000-0003-1698-7420
authors.initials: Z
authors.lastname: Wen
authors.affiliation: National Center for Inorganic Mass Spectrometry in Shanghai, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, P. R. China.
authors.forename: Rong
authors.initials: R
authors.lastname: Qian
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, P. R. China.
authors.forename: Jun
authors.initials: J
authors.lastname: Jin
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, P. R. China.|University of Chinese Academy of Sciences, Chinese Academy of Sciences , Shanghai 200050, P. R. China.
authors.forename: Qingsong
authors.initials: Q
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, P. R. China.
authors.forename: Meifen
authors.initials: M
authors.lastname: Wu
authors.affiliation: National Center for Inorganic Mass Spectrometry in Shanghai, Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050, P. R. China.
authors.forename: Shangjun
authors.initials: S
authors.lastname: Zhuo
keywords: SEI; additive; carbon disulfide; electrolyte; lithium sulfur battery