Highly dispersed sulfur in ordered mesoporous carbon sphere as a composite cathode for rechargeable polymer Li/S battery

被引：253

作者：

Liang, Xiao ^{[1
]}

Wen, Zhaoyin ^{[1
]}

Liu, Yu ^{[1
]}

Zhang, Hao ^{[1
]}

Huang, Lezhi ^{[1
]}

Jin, Jun ^{[1
]}

机构：

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

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 07期

关键词：

Sulfur composite cathode; Mesoporous carbon sphere; Lithium sulfur battery; IONIC LIQUID ELECTROLYTE; LITHIUM BATTERIES; ELECTROCHEMICAL PERFORMANCE; CELL;

D O I：

10.1016/j.jpowsour.2010.12.052

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 mesoporous carbon sphere with the uniform channels (OMC) is employed as the conductive matrix in the sulfur cathode for the lithium sulfur battery based on all-solid-state PEO18Li(CF3SO2)(2)N-10 wt%SiO2 electrolyte. Cyclic voltammograms (CV) and electrochemical impedance spectrum (EIS) suggest that the electrochemical stability of the S-OMCs is obviously superior to the pristine sulfur cathode. The S-OMCs composite shows excellent cycling performance with a reversible discharge capacity of about 800 mAhg(-1) after 25 cycles. This would be attributed to an appropriate conductive structure in which the active sulfur is highly dispersed in and contacted with the OMCs matrix. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3655 / 3658

页数：4

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