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

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	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
刊名	NATURE COMMUNICATIONS
	2017-03-03
卷号	8 页码:-
ISSN号	2041-1723
通讯作者	Li, F (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
中文摘要	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.
学科主题	Multidisciplinary Sciences
收录类别	SCI
资助信息	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]
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78243]
专题	金属研究所_中国科学院金属研究所
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, Feng.(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):-.