CNT enhanced sulfur composite cathode material for high rate lithium battery

被引：132

作者：

Wei, Wei ^{[1
]}

Wang, Jiulin ^{[1
]}

Zhou, Longjie ^{[2
]}

Yang, Jun ^{[1
]}

Schumann, Bernd ^{[3
]}

NuLi, Yanna ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China

[2] Bosch China Investment Ltd, Res & Technol Ctr Asia Pacific, Shanghai 200120, Peoples R China

[3] Robert Bosch GmbH, Corp Sector Res & Adv Engn, D-70049 Stuttgart, Germany

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2011年 / 13卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Multi-wall carbon nanotubes; Sulfur composite materials; High power rate; Lithium battery; ELECTROCHEMICAL PERFORMANCE; ENERGY; COPOLYMERS; ELECTRODE; ION;

D O I：

10.1016/j.elecom.2011.02.001

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Sulfur-based ternary composite cathode materials containing multi-wall carbon nanotubes (MWCNTs) were prepared and investigated. Tested by coin type cells, the composite materials exhibited the sulfur utilization approaching to 95.3%, the capacity retention close to 96.5% for 100 cycles, and high power rate capability up to 7C. The excellent electrochemical performance can be attributed to the homogeneous dispersion of MWCNTs in the composites, which not only accommodates the volume change during charge/discharge processes, but also provides stable electrical and ionic transfer channels. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：399 / 402

页数：4

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