期刊
CHEMICAL ENGINEERING JOURNAL
卷 341, 期 -, 页码 441-449出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2018.02.057
关键词
Sulfur vapor deposition; Nitrogen doping; Carbon fiber foam; Polysulfide trapping; Lithium sulfur battery
资金
- National Natural Science Foundation of China [21576039, 21276042, 21421005, 21536002, U1608223]
- Program for Innovative Research Team in University [IRT_13R06]
- Program for New Century Excellent Talents in University [NCET130080]
- Program for Liaoning Excellent Talents in University [LJQ2013006]
Lithium sulfur batteries are one of the most promising candidates for the next generation batteries due to its high energy storage density. However, the complicated fabricate method of the sulfur cathode limits its practical application. Recently, the fabrication of sulfur cathode via sulfur vapor deposition is becoming increasingly popular for the reason of simple process and easy industrialization. However, how to solve the severe shuttle effect of polysulfide during cycling remains a challenge in this kind of cathode. Herein, in order to decrease the immigration of polysulfide in the sulfur vapor deposition fabricated cathode, nitrogen-doped carbon fiber foam is designed by the carbonization of polyaniline treated cotton. The nitrogen species in nitrogen-doped carbon fiber foam act as the active sites for the capture of polysulfides, and the shuttle effect is suppressed effectively during cycling. With a high sulfur areal mass loading of 3 mg cm(-2), the prepared cathode exhibits a specific capacity of 443.7 mAh g(-1) and capacity retention over 97% after 500 cycles at 2C.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据