High sulfur loading composite wrapped by 3D nitrogen-doped graphene as a   cathode material for lithium-sulfur batteries

doi:10.1039/c3ta14921h

CORC > 北京大学 > 化学与分子工程学院

	High sulfur loading composite wrapped by 3D nitrogen-doped graphene as a cathode material for lithium-sulfur batteries
	Wang, Chao ; Su, Kai ; Wan, Wang ; Guo, Hua ; Zhou, Henghui ; Chen, Jitao ; Zhang, Xinxiang ; Huang, Yunhui
刊名	journal of materials chemistry a
	2014
关键词	LI-S BATTERIES HIGH-CAPACITY ION BATTERIES CYCLE LIFE PERFORMANCE PARTICLES OXIDE
DOI	10.1039/c3ta14921h
英文摘要	A porous three-dimensional nitrogen-doped graphene (3D-NG) was introduced as an interconnected framework for sulfur in lithium-sulfur batteries. The 3D-NG-sulfur composite (3D-NGS) with a high sulfur content of 87.6 wt% was synthesized via a facile one-pot solution method and sulfur was well dispersed within it. The as-designed 3D-NGS composite exhibits excellent rate capability and cyclability. The discharge specific capacity is 792 mA h g(-1) after 145 cycles at a current density of 600 mA g(-1) and the capacity fading rate is 0.05% per cycle. Even at a high rate of 1500 mA g(-1), the composite still shows a good cycle performance with a capacity of 671 mA h g(-1) after 200 cycles. The outstanding electrochemical performance can be attributed to the flexible porous 3D structure and N-doping in graphene. The flexible 3D-NG can provide a conductive framework for electron transport and alleviate the volume effect during cycling. N-doping can facilitate the penetration of Li ions across the graphene and restrain sulfur due to the strong chemical bonding between S and the nearby N atoms.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000332935300025&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; SCI(E); EI; 100; ARTICLE; chenjitao@pku.edu.cn; huangyh@mail.hust.edu.cn; 14; 5018-5023; 2
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/150650]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, Chao,Su, Kai,Wan, Wang,et al. High sulfur loading composite wrapped by 3D nitrogen-doped graphene as a cathode material for lithium-sulfur batteries[J]. journal of materials chemistry a,2014.
APA	Wang, Chao.,Su, Kai.,Wan, Wang.,Guo, Hua.,Zhou, Henghui.,...&Huang, Yunhui.(2014).High sulfur loading composite wrapped by 3D nitrogen-doped graphene as a cathode material for lithium-sulfur batteries.journal of materials chemistry a.
MLA	Wang, Chao,et al."High sulfur loading composite wrapped by 3D nitrogen-doped graphene as a cathode material for lithium-sulfur batteries".journal of materials chemistry a (2014).