A flexible nanostructured sulphur-carbon nanotube cathode with high rate performance for Li-S batteries

被引：481

作者：

Zhou, Guangmin ^{[1
]}

Wang, Da-Wei ^{[2
]}

Li, Feng ^{[1
]}

Hou, Peng-Xiang ^{[1
]}

Yin, Lichang ^{[1
]}

Liu, Chang ^{[1
]}

Lu, Gao Qing ^{[2
]}

Gentle, Ian R. ^{[3
]}

Cheng, Hui-Ming ^{[1
]}

机构：

[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China

[2] Univ Queensland, Australian Inst Bioengn & Nanotechnol, ARC Ctr Excellence Funct Nanomat, Brisbane, Qld 4072, Australia

[3] Univ Queensland, Sch Chem & Mol Biosci, Brisbane, Qld 4072, Australia

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2012年 / 5卷 / 10期

基金：

美国国家科学基金会;

关键词：

RECHARGEABLE LITHIUM BATTERIES; POSITIVE ELECTRODE MATERIALS; CELL; TEMPERATURE; COMPOSITES; CAPACITY; OXIDE;

D O I：

10.1039/c2ee22294a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the template-directed synthesis of sulphur-carbon nanotubes and their use to form a membrane that is binder-free, highly conductive and flexible. This nanostructured membrane is used as a self-supporting cathode without metal current-collectors for Li-S batteries. The membrane cathode has a high electrical conductivity and renders a long life of sulphur of over 100 charge-discharge cycles. High discharge capacity of sulphur was attained at 712 mA h g(sulphur)(-1) (23 wt% S) and 520 mA h g(sulphur)(-1) (50 wt% S) at a high current density (6 A g(sulphur)(-1)). The overall capacity of the flexible cathode correspondingly reaches 163 mA h g(-1) (23 wt% S) and 260 mA h g(-1) (50 wt% S). These results demonstrate the great potential of this nanostructured flexible membrane as a cathode for Li-S batteries with fast charge-discharge performance and long life.

引用

页码：8901 / 8906

页数：6

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