Sulfur-mesoporous carbon composites in conjunction with a novel ionic liquid electrolyte for lithium rechargeable batteries

被引：345

作者：

Wang, J. ^{[1
,4
]}

Chew, S. Y. ^{[1
,4
]}

Zhao, Z. W. ^{[1
]}

Ashraf, S. ^{[2
,4
]}

Wexler, D. ^{[3
]}

Chen, J. ^{[2
,4
]}

Ng, S. H. ^{[1
,4
]}

Chou, S. L. ^{[1
,4
]}

Liu, H. K. ^{[1
,4
]}

机构：

[1] Univ Wollongong, Inst Superconduct & Elect Mat, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, Intelligent Polymer Res Inst, Wollongong, NSW 2522, Australia

[3] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia

[4] Univ Wollongong, ARC Ctr Excellence Electromat Sci, Wollongong, NSW 2522, Australia

来源：

CARBON | 2008年 / 46卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1016/j.carbon.2007.11.007

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：

Sulfur coated mesoporous carbon (S-C) composites have been synthesized and physically characterized by scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and thermogravimetric analysis. Firstly, the electrochemical properties of the S-C composite cathode materials were tested in a conventional electrolyte consisting of 1 mol/L lithium bistrifluoromethanesulfonimidate in poly(ethylene glycol) dimethyl ether to compare them with pure sulfur electrode. The capacity and cyclic stability of the S-C composite were improved. Then the S-C composites were tested in a novel ionic liquid electrolyte consisting of 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide and lithium bistrifluoromethanesulfonimidate. The capacity and cyclic stability of the S-C composite using the ionic liquid electrolyte were much better than for the sample tested in a conventional organic solvent electrolyte. (c) 2007 Elsevier Ltd. All rights reserved..

引用

页码：229 / 235

页数：7

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