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Anode interfacial layer formation via reductive ethyl detaching of organic iodide in lithium-oxygen batteries
Zhang, Xiao-Ping; Sun, Yi-Yang; Sun, Zhuang; Yang, Chu-Shu; Zhang, Tao
2019-08-07
Source PublicationNATURE COMMUNICATIONS
ISSN2041-1723
Volume10
SubtypeArticle
AbstractAs soluble catalysts, redox mediators can reduce the high charging overpotential of lithium-oxygen batteries by providing sufficient liquid-solid interface for lithium peroxide decomposition. However, the redox mediators usually introduce undesirable reactions. In particular, the so-called "shuttle effect" leads to the loss of both the redox mediators and electrical energy efficiency. In this study, an organic compound, triethylsulfonium iodide, is found to act bifunctionally as both a redox mediator and a solid electrolyte interphase-forming agent for lithium-oxygen batteries. During charging, the organic iodide exhibits comparable lithium peroxide-oxidizing capability with inorganic iodides. Meanwhile, it in situ generates an interfacial layer on lithium anode via reductive ethyl detaching and the subsequent oxidation. This layer prevents the lithium anode from reacting with the redox mediators and allows efficient lithium-ion transfer leading to dendrite-free lithium anode. Significantly improved cycling performance has been achieved by the bifunctional organic iodide redox mediator.
DOI10.1038/s41467-019-11544-8
Language英语
WOS Research AreaScience & Technology - Other Topics
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26915
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhang, Xiao-Ping,Sun, Yi-Yang,Sun, Zhuang,et al. Anode interfacial layer formation via reductive ethyl detaching of organic iodide in lithium-oxygen batteries[J]. NATURE COMMUNICATIONS,2019,10.
APA Zhang, Xiao-Ping,Sun, Yi-Yang,Sun, Zhuang,Yang, Chu-Shu,&Zhang, Tao.(2019).Anode interfacial layer formation via reductive ethyl detaching of organic iodide in lithium-oxygen batteries.NATURE COMMUNICATIONS,10.
MLA Zhang, Xiao-Ping,et al."Anode interfacial layer formation via reductive ethyl detaching of organic iodide in lithium-oxygen batteries".NATURE COMMUNICATIONS 10(2019).
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