globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1615837114
论文题名:
Catalytic oxidation of Li2S on the surface of metal sulfides for Li-S batteries
作者: 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.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2017
卷: 114, 期:5
起始页码: 840
结束页码: 845
语种: 英语
英文关键词: Catalytic oxidation ; Graphene ; Lithium-sulfur batteries ; Metal sulfides ; Polysulfide adsorption
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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163876
Appears in Collections:气候变化与战略

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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 94305, United States; Sun, J., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Zhao, J., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Zu, C., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Wu, D.S., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Zhang, Q., School of Materials Science and Engineering, Beihang University, Beijing, 100191, China; Cui, Y., Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States, Stanford Institute for Materials and Energy Sciences, Stanford Linear Accelerator Center, National Accelerator Laboratory, Menlo Park, CA 94025, United States

Recommended Citation:
Zhou G.,Tian H.,Jin Y.,et al. Catalytic oxidation of Li2S on the surface of metal sulfides for Li-S batteries[J]. Proceedings of the National Academy of Sciences of the United States of America,2017-01-01,114(5)
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