Anode interfacial layer formation via reductive ethyl detaching of organic iodide in lithium-oxygen batteries

doi:10.1038/s41467-019-11544-8

SIC OpenIR

	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 Publication	NATURE COMMUNICATIONS
ISSN	2041-1723
Volume	10
Subtype	Article
Abstract	As 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.
DOI	10.1038/s41467-019-11544-8
Language	英语
WOS Research Area	Science & Technology - Other Topics
Publisher	NATURE PUBLISHING GROUP
Citation statistics	Cited Times:10[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://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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