title: Comparative Study of Ether-Based Electrolytes for Application in Lithium-Sulfur Battery.
abstract: Herein, we report the characteristics of electrolytes using various ether-solvents with molecular composition CH3O[CH2CH2O]nCH3, differing by chain length, and LiCF3SO3 as the lithium salt. The electrolytes, considered as suitable media for lithium-sulfur batteries, are characterized in terms of thermal properties (TGA, DSC), lithium ion conductivity, lithium interface stability, cyclic voltammetry, self-diffusion properties of the various components, and lithium transference number measured by NMR. Furthermore, the electrolytes are characterized in lithium cells using a sulfur-carbon composite cathode by galvanostatic charge-discharge tests. The results clearly evidence the influence of the solvent chain length on the species mobility within the electrolytes that directly affects the behavior in lithium sulfur cell. The results may effectively contribute to the progress of an efficient, high-energy lithium-sulfur battery.
authors.affiliation: †Sapienza University of Rome, Chemistry Department, Piazzale Aldo Moro, 5, 00185, Rome, Italy.
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Carbone
authors.forename: Mallory
authors.initials: M
authors.lastname: Gobet
authors.affiliation: §Ph.D. Program in Chemistry, City University of New York, New York, New York 10016, United States.
authors.forename: Jing
authors.initials: J
authors.lastname: Peng
authors.affiliation: ∥Department of Chemistry and Biochemistry, Hunter College of the City University of New York, New York, New York 10065, United States.
authors.forename: Matthew
authors.initials: M
authors.lastname: Devany
authors.affiliation: ⊥Elettrochimica ed Energia, Via di Priscilla, 22, 00199, Rome, Italy.
authors.forename: Bruno
authors.initials: B
authors.lastname: Scrosati
authors.forename: Steve
authors.initials: S
authors.lastname: Greenbaum
authors.affiliation: †Sapienza University of Rome, Chemistry Department, Piazzale Aldo Moro, 5, 00185, Rome, Italy.
authors.forename: Jusef
authors.initials: J
authors.lastname: Hassoun
mesh_terms: D011211:Electric Power Supplies; D004573:Electrolytes / Q000737:chemistry*; D004986:Ether / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013455:Sulfur / Q000737:chemistry*; D013696:Temperature
chemical_list: D004573:Electrolytes; D004986:Ether; D013455:Sulfur; D008094:Lithium
keywords: NMR; diffusion; electrolytes; ether-based; glyme; lithium−sulfur battery