Conductive porous vanadium nitride/graphene composite as chemical anchor of polysulfides for lithium-sulfur batteries

IMR OpenIR

	Conductive porous vanadium nitride/graphene composite as chemical anchor of polysulfides for lithium-sulfur batteries
	Sun, Zhenhua; Zhang, Jingqi; Yin, Lichang; Hu, Guangjian; Fang, Ruopian; Cheng, Hui-Ming; Li, Feng; Li, F (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
	2017-03-03
发表期刊	NATURE COMMUNICATIONS
ISSN	2041-1723
卷号	8 页码:-
摘要	Although the rechargeable lithium-sulfur battery is an advanced energy storage system, its practical implementation has been impeded by many issues, in particular the shuttle effect causing rapid capacity fade and low Coulombic efficiency. Herein, we report a conductive porous vanadium nitride nanoribbon/graphene composite accommodating the catholyte as the cathode of a lithium-sulfur battery. The vanadium nitride/graphene composite provides strong anchoring for polysulfides and fast polysulfide conversion. The anchoring effect of vanadium nitride is confirmed by experimental and theoretical results. Owing to the high conductivity of vanadium nitride, the composite cathode exhibits lower polarization and faster redox reaction kinetics than a reduced graphene oxide cathode, showing good rate and cycling performances. The initial capacity reaches 1,471mAhg(-1) and the capacity after 100 cycles is 1,252 mAhg(-1) at 0.2 C, a loss of only 15%, offering a potential for use in high energy lithium-sulfur batteries.; Although the rechargeable lithium-sulfur battery is an advanced energy storage system, its practical implementation has been impeded by many issues, in particular the shuttle effect causing rapid capacity fade and low Coulombic efficiency. Herein, we report a conductive porous vanadium nitride nanoribbon/graphene composite accommodating the catholyte as the cathode of a lithium-sulfur battery. The vanadium nitride/graphene composite provides strong anchoring for polysulfides and fast polysulfide conversion. The anchoring effect of vanadium nitride is confirmed by experimental and theoretical results. Owing to the high conductivity of vanadium nitride, the composite cathode exhibits lower polarization and faster redox reaction kinetics than a reduced graphene oxide cathode, showing good rate and cycling performances. The initial capacity reaches 1,471mAhg(-1) and the capacity after 100 cycles is 1,252 mAhg(-1) at 0.2 C, a loss of only 15%, offering a potential for use in high energy lithium-sulfur batteries.
部门归属	[sun, zhenhua ; zhang, jingqi ; yin, lichang ; hu, guangjian ; fang, ruopian ; cheng, hui-ming ; li, feng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [cheng, hui-ming] tsinghua univ, tsinghua berkeley shenzhen inst, shenzhen 518055, peoples r china
学科领域	Multidisciplinary Sciences
资助者	MOST [2016YFA0200100, 2014CB932402, 2016YFB0100100]; National Science Foundation of China [51525206, 51521091, 51472249, 51372253, 51272051, U1401243]; Youth Innovation Promotion Association of the Chinese Academy of Sciences [2015150]; Natural Science Foundation of Liaoning province [2015021012]; 'Strategic Priority Research Program' of the Chinese Academy of Sciences [XDA09010104]; Key Research Program of the Chinese Academy of Sciences [KGZD-EW-T06]; CAS/SAFEA International Partnership Program for Creative Research Teams; Institute of Metal Research of the Chinese Academy of Sciences [XDA09010104, 2015-PY03]
收录类别	SCI
语种	英语
WOS记录号	WOS:000395280000001
引用统计	被引频次：946[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78243
专题	中国科学院金属研究所
通讯作者	Li, F (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Sun, Zhenhua,Zhang, Jingqi,Yin, Lichang,et al. Conductive porous vanadium nitride/graphene composite as chemical anchor of polysulfides for lithium-sulfur batteries[J]. NATURE COMMUNICATIONS,2017,8:-.
APA	Sun, Zhenhua.,Zhang, Jingqi.,Yin, Lichang.,Hu, Guangjian.,Fang, Ruopian.,...&Li, F .(2017).Conductive porous vanadium nitride/graphene composite as chemical anchor of polysulfides for lithium-sulfur batteries.NATURE COMMUNICATIONS,8,-.
MLA	Sun, Zhenhua,et al."Conductive porous vanadium nitride/graphene composite as chemical anchor of polysulfides for lithium-sulfur batteries".NATURE COMMUNICATIONS 8(2017):-.