Sulfur confined in nitrogen-doped microporous carbon used in a carbonate-based electrolyte for long-life, safe lithium-sulfur batteries

被引：113

作者：

Niu, Shuzhang ^{[1
,2
,3
]}

Zhou, Guangmin ^{[4
]}

Lv, Wei ^{[1
,2
]}

Shi, Huifa ^{[1
,2
,3
]}

Luo, Chong ^{[1
,2
,3
]}

He, Yanbing ^{[1
,2
]}

Li, Baohua ^{[1
,2
]}

Yang, Quan-Hong ^{[1
,2
,5
]}

Kang, Feiyu ^{[1
,2
,3
]}

机构：

[1] Tsinghua Univ, Grad Sch Shenzhen, Engn Lab Functionalized Carbon Mat, Shenzhen 518055, Peoples R China

[2] Tsinghua Univ, Grad Sch Shenzhen, Shenzhen Key Lab Graphene Based Mat, Shenzhen 518055, Peoples R China

[3] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[4] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 100016, Peoples R China

[5] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300372, Peoples R China

来源：

CARBON | 2016年 / 109卷

基金：

中国国家自然科学基金;

关键词：

POROUS CARBON; PERFORMANCE; HYBRID; POLYSULFIDE; NANOSPHERES; COMPOSITES; ADSORPTION; MOLECULES; CATHODE; FILMS;

D O I：

10.1016/j.carbon.2016.07.062

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：

Nitrogen-doped microporous carbon spheres (NPCSs) with a high surface area (1958 m(2) g(-1)), large micropore volume and a high nitrogen content were synthesized by a simple one-step polymerization and subsequent ZnCl2 activation. The NPCSs can host a large number of small sulfur molecules, and restrict the reaction between the carbonate-based electrolytes and polysulfides. As a result, the NPCSs-sulfur (NPCS-S) cathode exhibits excellent cyclic stability (initial capacity of 1382 mAh g(-1) and 1002 mAh g(-1) after 200 cycles at 0.3 C) and high rate performance (645 mAh g(-1) at 3 C) even using the conventional carbonate-based electrolytes, demonstrating its potential use in long-life, safe lithium sulfur batteries. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：1 / 6

页数：6

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