Electrochemical (De)Lithiation of 1D Sulfur Chains in Li-S Batteries: A Model System Study

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	Electrochemical (De)Lithiation of 1D Sulfur Chains in Li-S Batteries: A Model System Study
	Yang, Chun-Peng 1,2,3; Yin, Ya-Xia 1,2; Guo, Yu-Guo 1,2; Wan, Li-Jun 1,2
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	2015-02-18
卷号	137 期号:6 页码:2215-2218
英文摘要	In contrast to the extensive studies of the electrochemical behavior of conventional cyclic S-8 molecules in Li-S batteries, there has been hardly any investigation of the electrochemistry of S chains. Here we use S chains encapsulated in single- and double-walled carbon nanotubes as a model system and report the electrochemical behavior of 1D S chains in Li-S batteries. An electrochemical test shows that S chains have high electrochemical activity during lithiation and extinctive electrochemistry compared with conventional S8. The confined steric effect provides Li+ solid-phase diffusion access to insert/egress reactions with S chains. During lithiation, the long S chains spontaneously become short chains, which show higher discharge plateaus and better kinetics. The unique electrochemistry of S chains supplements the existing knowledge of the S cathode mechanism and provides avenues for rational design of S cathode materials in Li-S batteries.
收录类别	SCI
语种	英语
公开日期	2015-11-02
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/27996]
专题	化学研究所_分子纳米结构与纳米技术实验室
作者单位	1.Chinese Acad Sci, CAS Key Lab Mol Nanostruct & Nanotechnol, Inst Chem, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Chun-Peng,Yin, Ya-Xia,Guo, Yu-Guo,et al. Electrochemical (De)Lithiation of 1D Sulfur Chains in Li-S Batteries: A Model System Study[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2015,137(6):2215-2218.
APA	Yang, Chun-Peng,Yin, Ya-Xia,Guo, Yu-Guo,&Wan, Li-Jun.(2015).Electrochemical (De)Lithiation of 1D Sulfur Chains in Li-S Batteries: A Model System Study.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,137(6),2215-2218.
MLA	Yang, Chun-Peng,et al."Electrochemical (De)Lithiation of 1D Sulfur Chains in Li-S Batteries: A Model System Study".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 137.6(2015):2215-2218.