气候变化领域集成服务门户(CCPortal): Catalytic oxidation of Li2S on the surface of metal sulfides for Li-S batteries

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DOI	10.1073/pnas.1615837114
	Catalytic oxidation of Li2S on the surface of metal sulfides for Li-S batteries
	Zhou G.; Tian H.; Jin Y.; Tao X.; Liu B.; Zhang R.; Seh Z.W.; Zhuo D.; Liu Y.; Sun J.; Zhao J.; Zu C.; Wu D.S.; Zhang Q.; Cui Y.
发表日期	2017
ISSN	0027-8424
起始页码	840
结束页码	845
卷号	114 期号:5
英文摘要	Polysulfide binding and trapping to prevent dissolution into the electrolyte by a variety of materials has been well studied in Li-S batteries. Here we discover that some of those materials can play an important role as an activation catalyst to facilitate oxidation of the discharge product, Li2S, back to the charge product, sulfur. Combining theoretical calculations and experimental design, we select a series of metal sulfides as a model system to identify the key parameters in determining the energy barrier for Li2S oxidation and polysulfide adsorption. We demonstrate that the Li2S decomposition energy barrier is associated with the binding between isolated Li ions and the sulfur in sulfides; this is the main reason that sulfide materials can induce lower overpotential compared with commonly used carbon materials. Fundamental understanding of this reaction process is a crucial step toward rational design and screening of materials to achieve high reversible capacity and long cycle life in Li-S batteries. © 2017, National Academy of Sciences. All rights reserved.
英文关键词	Catalytic oxidation; Graphene; Lithium-sulfur batteries; Metal sulfides; Polysulfide adsorption
语种	英语
scopus关键词	carbon; lithium derivative; lithium ion; lithium sulfide; sulfide; sulfur; unclassified drug; adsorption; Article; catalyst; chemical binding; decomposition; electric battery; energy; oxidation; priority journal; theoretical model; theoretical study
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160667
作者单位	Zhou, G., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Tian, H., School of Materials Science and Engineering, Beihang University, Beijing, 100191, China; Jin, Y., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Tao, X., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Liu, B., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Zhang, R., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Seh, Z.W., Institute of Materials Research and Engineering, Agency for Science, Technology and Research, Singapore, 138634, Singapore; Zhuo, D., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Liu, Y., Department of Materials Science and Engineering, Stanford University, Stanford, CA ...
推荐引用方式 GB/T 7714	Zhou G.,Tian H.,Jin Y.,et al. Catalytic oxidation of Li2S on the surface of metal sulfides for Li-S batteries[J],2017,114(5).
APA	Zhou G..,Tian H..,Jin Y..,Tao X..,Liu B..,...&Cui Y..(2017).Catalytic oxidation of Li2S on the surface of metal sulfides for Li-S batteries.Proceedings of the National Academy of Sciences of the United States of America,114(5).
MLA	Zhou G.,et al."Catalytic oxidation of Li2S on the surface of metal sulfides for Li-S batteries".Proceedings of the National Academy of Sciences of the United States of America 114.5(2017).