气候变化领域集成服务门户(CCPortal): Customizing a Li-metal battery that survives practical operating conditions for electric vehicle applications

CCPortal

DOI	10.1039/c9ee00716d
	Customizing a Li-metal battery that survives practical operating conditions for electric vehicle applications
	Hwang J.-Y.; Park S.-J.; Yoon C.S.; Sun Y.-K.
发表日期	2019
ISSN	1754-5692
起始页码	2174
结束页码	2184
卷号	12 期号:7
英文摘要	We propose a new breakthrough in realizing a practical Li-metal battery (LMB) capable of fast charging while delivering a high energy density. We used an electrolyte consisting of 1 M LiPF6 and 0.05 M lithium difluoro(oxalate)borate dissolved in a mixture of ethyl methyl carbonate and fluoroethylene carbonate to ensure the formation of a stable and robust solid electrolyte interphase (SEI) layer on the anode surface. Pretreatment of the Li-metal anode with LiNO3 adds a prior Li2O-rich SEI layer that provides the required mechanical strength to prevent premature SEI layer breakdown. An Al-doped full-concentration-gradient Li[Ni0.75Co0.10Mn0.15]O2 cathode provides the necessary cycling stability at a high cathode loading. By integrating these components, we produced an LMB that allowed a high areal capacity of 4.1 mA h cm-2 with an unprecedented cycling stability over 300 cycles at a high current density of 3.6 mA cm-2 (full charge-discharge in 2 h). We believe that the findings presented herein provide new perspectives for the development of practical LMBs that satisfy the capacity and charging rate requirements for future electric vehicles. © The Royal Society of Chemistry 2019.
语种	英语
scopus关键词	Aluminum compounds; Anodes; Cathodes; Charging (batteries); Cobalt compounds; Electric automobiles; Electric discharges; Fluorine compounds; Lithium compounds; Manganese compounds; Nickel compounds; Secondary batteries; Seebeck effect; Solid electrolytes; Concentration gradients; Ethyl methyl carbonate; Fluoroethylene carbonates; High current densities; High energy densities; Practical operating conditions; Solid electrolyte interphase layer (SEI); Vehicle applications; Phosphorus compounds; electric vehicle; electrode; electrolyte; fuel cell; lithium; operations technology
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162519
作者单位	Department of Energy Engineering, Hanyang University, Seoul, 04763, South Korea; Department of Materials Science and Engineering, Hanyang University, Seoul, 04763, South Korea
推荐引用方式 GB/T 7714	Hwang J.-Y.,Park S.-J.,Yoon C.S.,et al. Customizing a Li-metal battery that survives practical operating conditions for electric vehicle applications[J],2019,12(7).
APA	Hwang J.-Y.,Park S.-J.,Yoon C.S.,&Sun Y.-K..(2019).Customizing a Li-metal battery that survives practical operating conditions for electric vehicle applications.Energy and Environmental Science,12(7).
MLA	Hwang J.-Y.,et al."Customizing a Li-metal battery that survives practical operating conditions for electric vehicle applications".Energy and Environmental Science 12.7(2019).