| Literature DB >> 26057152 |
Lorenzo Carbone1, Mallory Gobet, Jing Peng2, Matthew Devany3, Bruno Scrosati4, Steve Greenbaum, Jusef Hassoun1.
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.Entities:
Keywords: NMR; diffusion; electrolytes; ether-based; glyme; lithium−sulfur battery
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Year: 2015 PMID: 26057152 DOI: 10.1021/acsami.5b02160
Source DB: PubMed Journal: ACS Appl Mater Interfaces ISSN: 1944-8244 Impact factor: 9.229