Smaller Sulfur Molecules Promise Better Lithium-Sulfur Batteries

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	Smaller Sulfur Molecules Promise Better Lithium-Sulfur Batteries
	Xin, S ; Gu, L ; Zhao, NH ; Yin, YX ; Zhou, LJ ; Guo, YG ; Wan, LJ
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	2012
卷号	134 期号:45 页码:18510
关键词	ION BATTERY CATHODE PERFORMANCE STORAGE ENERGY ELECTROLYTE COMPOSITES GRAPHENE CELL
ISSN号	0002-7863
通讯作者	Guo, YG (reprint author), Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, Inst Chem, Beijing 100190, Peoples R China.
中文摘要	The lithium-sulfur battery holds a high theoretical energy density, 4-5 times that of today's lithium ion batteries, yet its applications have been hindered by poor. electronic conductivity of the sulfur Cathode and, most importantly, the rapid fading of its capacity due, to the formation of soluble polysulfide intermediates (Li2Sn, n = 4-8). Despite numerous efforts concerning this issue, combatting sulfur loss remains one of the greatest challenges. Here we show that this problem can be effectively diminished by controlling the sulfur as smaller allotropes. Metastable small sulfur molecules of S2-4 were synthesized in the confined space of a conductive microporous carbon matrix. The confined S2-4 as a new cathode material can totally avoid the unfavorable transition between the commonly used large S-8 and S-4(2-). Li-S batteries based on this concept exhibit unprecedented electrochemical behavior with high specific capacity, good cycling stability, and superior rate capability, which promise a practicable battery with high energy density for applications in portable electronics, electric vehicles, and large-scale energy storage systems.
收录类别	SCI
资助信息	National Key Project on Basic Research [2011CB935700, 2012CB932900]; National Natural Science Foundation of China [51225204, 91127044, 21121063]; Chinese Academy of Sciences
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/52711]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Xin, S,Gu, L,Zhao, NH,et al. Smaller Sulfur Molecules Promise Better Lithium-Sulfur Batteries[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2012,134(45):18510.
APA	Xin, S.,Gu, L.,Zhao, NH.,Yin, YX.,Zhou, LJ.,...&Wan, LJ.(2012).Smaller Sulfur Molecules Promise Better Lithium-Sulfur Batteries.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,134(45),18510.
MLA	Xin, S,et al."Smaller Sulfur Molecules Promise Better Lithium-Sulfur Batteries".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134.45(2012):18510.