Fe3C-N-doped carbon modified separator for high performance lithium-sulfur batteries

作     者：Hongyu Pan Zhong Tan Haihui Zhou Lanlan Jiang Zhongyuan Huang Qjaoxia Feng Qiang Zhou Shuai Ma Yafei Kuang Hongyu Pan;Zhong Tan;Haihui Zhou;Lanlan Jiang;Zhongyuan Huang;Qiaoxia Feng;Qiang Zhou;Shuai Ma;Yafei Kuang

作者机构：State Key Laboratory for Chemo/Biosensing and ChemometricsHunan UniversityChangsha 410082HunanChina College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082HunanChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2019年第28卷第12期

页      面：101-108页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(Grant no.51672075,21271069,51772092,51704106) Science and Technology Program of Hunan Province(Grant no.2015JC3049) 

主　　题：Fe3C-N-doped reduced graphene oxide Modified separator Sulfur cathode Cyclic and rate performance 

摘      要：A new Fe3C-N-doped reduced graphene oxide(Fe3C-N-rGO)prepared by a facile method is used as a separator for high performance lithium-sulfur(Li-S)*** Fe3C-N-rGO is coated on the surface of commercial polypropylene separator(Celgard 2400)close to the sulfur *** special nanotubes are in-situ catalyzed by Fe3C *** could entrap lithium polysulfides(Li PSs)to restrain the shuttle effect and reduce the loss of active *** battery with the modified separator and sulfur cathode shows an excellent cycle *** has a high rate performance,580.5 mAh/g at the high current rate of 4 C relative to 1075 mAh/g at 0.1 *** also has an initial discharge capacity of 774.8 m Ah/g measured at 0.5 C and remains 721.8 mAh/g after 100 cycles with a high capacity retention of 93.2%.The outstanding performances are notable in recently reports with modified separator.