A LiPO2F2/LiFSI dual-salt electrolyte enabled stable cycling of lithium metal batteries

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	A LiPO2F2/LiFSI dual-salt electrolyte enabled stable cycling of lithium metal batteries
	Dong, Ning; Yang, Guanghua; Luo, Hao; Xu, Hewei; Xia, Yonggao; Liu, Zhaoping
刊名	JOURNAL OF POWER SOURCES
	2018
卷号	400 页码:449-456
关键词	Rechargeable Batteries Solid Electrolytes Dendrite Growth Liquid Anodes Performance Mechanisms Deposition Interface Stability
英文摘要	Metallic lithium, with super high theoretical specific capacity, enjoys great potential as an anode for rechargeable batteries. However, safety issues caused by lithium dendrite growth as well as limited cycling life restrict its practical application. Herein we validate that the application of a new dual-salt electrolyte composed of Lithium difluorophosphate (LiPO2F2) and lithium bis(fluorosulfony)imide (LiFSI) in the same proportion enables the improved long-term cycling performance along with high coulombic efficiency for lithium metal batteries. With 1 M LiPO2F2 and 1 M LiFSI in 1,2-dimethoxyethane as the electrolyte, a Li/Cu cell can be cycled at 1 mA for more than 300 cycles with a deposited capacity of 1.0 mAh. It also displays that a homogeneous and dendrite free solid electrolyte interphase layer is generated on the Cu electrode, which can be ascribed to the favorable stability of LiPO2F2 and high ionic conductivity of LiFSI. These results deliver perceptions for the advancement of high-performance lithium metal anode.
学科主题	Materials Science
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17149]
专题	2018专题
推荐引用方式 GB/T 7714	Dong, Ning,Yang, Guanghua,Luo, Hao,et al. A LiPO2F2/LiFSI dual-salt electrolyte enabled stable cycling of lithium metal batteries[J]. JOURNAL OF POWER SOURCES,2018,400:449-456.
APA	Dong, Ning,Yang, Guanghua,Luo, Hao,Xu, Hewei,Xia, Yonggao,&Liu, Zhaoping.(2018).A LiPO2F2/LiFSI dual-salt electrolyte enabled stable cycling of lithium metal batteries.JOURNAL OF POWER SOURCES,400,449-456.
MLA	Dong, Ning,et al."A LiPO2F2/LiFSI dual-salt electrolyte enabled stable cycling of lithium metal batteries".JOURNAL OF POWER SOURCES 400(2018):449-456.