Comparative Study of Ether-Based Electrolytes for Application in Lithium-Sulfur Battery

被引：98

作者：

Carbone, Lorenzo ^{[1
]}

Gobet, Mallory ^{[2
]}

Peng, Jing ^{[2
,3
]}

Devany, Matthew ^{[4
]}

Scrosati, Bruno ^{[5
]}

Greenbaum, Steve ^{[2
]}

Hassoun, Jusef ^{[1
]}

机构：

[1] Univ Roma La Sapienza, Dept Chem, I-00185 Rome, Italy

[2] CUNY Hunter Coll, Dept Phys & Astron, New York, NY 10065 USA

[3] CUNY, PhD Program Chem, New York, NY 10016 USA

[4] CUNY Hunter Coll, Dept Chem & Biochem, New York, NY 10065 USA

[5] Elettrochim & Energia, I-00199 Rome, Italy

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 25期

基金：

美国国家卫生研究院;

关键词：

lithium-sulfur battery; ether-based; glyme; electrolytes; NMR; diffusion; NANOCOMPOSITE; PERFORMANCE; SALT;

D O I：

10.1021/acsami.5b02160

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Herein, we report the characteristics of electrolytes using various ether-solvents with molecular composition CH3O[CH2CH2O](n)CH3, 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 chargedischarge 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.

引用

页码：13859 / 13865

页数：7

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