A nano-structured and highly ordered polypyrrole-sulfur cathode for lithium-sulfur batteries

被引：234

作者：

Liang, Xiao ^{[1
]}

Liu, Yu ^{[1
]}

Wen, Zhaoyin ^{[1
]}

Huang, Lezhi ^{[1
]}

Wang, Xiuyan ^{[1
]}

Zhang, Hao ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 16期

关键词：

Sulfur; Tubular polypyrrole; Lithium-sulfur battery; Composite cathode; IONIC LIQUID ELECTROLYTE; COMPOSITE CATHODE; ELECTROCHEMICAL PERFORMANCE; CARBON COMPOSITES; NANOTUBES;

D O I：

10.1016/j.jpowsour.2010.11.132

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A tubular polypyrrole (T-PPy) fiber is synthesized as a conductive matrix for the cathode of lithium-sulfur secondary battery. The sublimed sulfur is incorporated with the T-PPy by a co-heating process. The location and the content of sulfur show a significant effect on the electrochemical behavior of the composite. A reversible capacity of ca. 650 mAh g(-1) is maintained for over 80 cycles for the S/T-PPy composite with 30 wt.% sulfur. The enhanced conductivity, the favorable distribution of the nano-sized sulfur in the T-PPy and the stable retention of polysulfides lead to the improvement of the cycling stability of the sulfur based electrode. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：6951 / 6955

页数：5

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