电解质
材料科学
锂(药物)
无机化学
锂硫电池
电池(电)
循环伏安法
硫黄
热稳定性
电化学
化学工程
磷酸钒锂电池
化学
电极
物理化学
功率(物理)
内分泌学
冶金
工程类
物理
医学
量子力学
作者
Lorenzo Carbone,Mallory Gobet,Jing Peng,Matthew Devany,Bruno Scrosati,Steve Greenbaum,Jusef Hassoun
标识
DOI:10.1021/acsami.5b02160
摘要
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.
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