Sulfur-Impregnated Disordered Carbon Nanotubes Cathode for Lithium-Sulfur Batteries

被引：1201

作者：

Guo, Juchen ^{[1
]}

Xu, Yunhua ^{[1
]}

Wang, Chunsheng ^{[1
]}

机构：

[1] Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 10期

基金：

美国国家科学基金会;

关键词：

Disordered carbon nanotubes; lithium-sulfur batteries; sulfur impregnation; sulfur-carbon bonds; COMPOSITE CATHODE; ELECTROCHEMICAL PERFORMANCE; RECHARGEABLE BATTERIES; LOW-TEMPERATURE; CYCLE PROPERTY; CELL; ELECTROLYTE; IMPROVEMENT; CHALLENGES; MERCURY;

D O I：

10.1021/nl202297p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The commercialization of lithium sulfur batteries is hindered by low cycle stability and low efficiency, which are induced by sulfur active material loss and polysulfide shuttle reaction through dissolution into electrolyte. In this study, sulfur-impregnated disordered carbon nanotubes are synthesized as cathode material for the lithium sulfur battery. The obtained sulfur carbon tube cathodes demonstrate superior cyclability and Coulombic efficiency. More importantly, the electrochemical characterization indicates a new stabilization mechanism of sulfur in carbon induced by heat treatment.

引用

页码：4288 / 4294

页数：7

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