Pig bone derived hierarchical porous carbon and its enhanced cycling performance of lithium-sulfur batteries

被引：298

作者：

Wei, Shaochen ^{[1
]}

Zhang, Hao ^{[2
,3
]}

Huang, Yaqin ^{[1
]}

Wang, Weikun ^{[2
]}

Xia, Yuzhen ^{[1
]}

Yu, Zhongbao ^{[2
]}

机构：

[1] Beijing Univ Chem Technol, Key Lab Beijing City Preparat & Proc Novel Polyme, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

[2] Res Inst Chem Def, Beijing 100191, Peoples R China

[3] Univ Sci & Technol Beijing, Beijing 100083, Peoples R China

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2011年 / 4卷 / 03期

关键词：

CATHODE; COMPOSITE; DISCHARGE; ELECTRODE; CELLS;

D O I：

10.1039/c0ee00505c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Pig bone derived carbon with a unique hierarchical porous structure was prepared by potassium hydroxide (KOH) activation. The effects of activation temperature on the textural properties of the pig bone based carbons were investigated. The hierarchical porous carbons exhibit the largest BET specific surface areas and pore volume when the activation temperature reaches 850 degrees C, and the carbon still maintains a highly hierarchical structure even when the temperature is up to 950 degrees C. The pig bone derived hierarchical porous carbon/sulfur composites have been tested as a novel cathode for lithium-sulfur batteries. The result shows that the cycle stability and the utilization of sulfur in the lithium-sulfur batteries have been largely improved. The hierarchical porous carbon/sulfur cathode has a high initial capacity of 1265 mAh g(-1) and 643 mAh g(-1) after 50 cycles, which is higher than that of the normal cathodes with compact structures.

引用

页码：736 / 740

页数：5

共 31 条

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