Smart short-chain bifunctional N, N-dimethylethanolamine for high-performance lithium batteries

doi:10.1016/j.electacta.2018.06.114

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Smart short-chain bifunctional N, N-dimethylethanolamine for high-performance lithium batteries
	Fan, Xiaojing 1; Xing, Aiming 1; Sun, Wenwei 1; Lu, Ruifeng 2; Li, An 3; Wei, Xiangfeng 1; Meng, Fancheng 1; Liu, Jiehua 1
刊名	ELECTROCHIMICA ACTA
	2018-08-20
卷号	282 页码:711-718
关键词	Li metal battery Additives Solid electrolyte interphase Electrochemical performance Energy density
ISSN号	0013-4686
DOI	10.1016/j.electacta.2018.06.114
英文摘要	Li metal batteries have attracted many attentions owing to their excellent nature, including easier processes and higher energy density than that of conventional Li-ion batteries. However, lithium whiskers often result in the instability of Li anode and electrolyte, and even short circuit, which hinders the safe application of lithium batteries. In this paper, N,N-dimethylethanolamine (DMEA) is employed as a short-chain bifunctional organic additive to save the above problem in Li vertical bar vertical bar LiCoO2 batteries. DMEA not only effectively restrains the growth of Li whiskers by hydroxyl groups and decreases the concentration of free HF by amine groups, but also forms new high ionic-conductivity DMEA-Li based SEI film rather than only hard LiF SEI layer. As a result, the rate performance and capacity of Li vertical bar vertical bar LiCoO2 batteries have been remarkably improved, owing to the participation of bifunctional DMEA. The capacity of 159 mA h g(-1) has been retained after 150 cycles with a low capacity fading of 0.07 mA h g(-1) per cycle, 43% higher than that of DMEA-free cells at 0.5 C. (C) 2018 Elsevier Ltd. All rights reserved.
资助项目	Open Funds of the State Key Laboratory of Rare Earth Resource Utilization[RERU2016004]
WOS研究方向	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000439874200083
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32506]
专题	石油化工学院
通讯作者	Liu, Jiehua
作者单位	1.Hefei Univ Technol, Sch Mat Sci & Engn, Future Energy Lab, Tunxi Rd 193, Hefei 230009, Anhui, Peoples R China 2.Nanjing Univ Sci & Technol, Sch Sci, Nanjing 210094, Jiangsu, Peoples R China 3.Lanzhou Univ Technol, Coll Petrochem Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Fan, Xiaojing,Xing, Aiming,Sun, Wenwei,et al. Smart short-chain bifunctional N, N-dimethylethanolamine for high-performance lithium batteries[J]. ELECTROCHIMICA ACTA,2018,282:711-718.
APA	Fan, Xiaojing.,Xing, Aiming.,Sun, Wenwei.,Lu, Ruifeng.,Li, An.,...&Liu, Jiehua.(2018).Smart short-chain bifunctional N, N-dimethylethanolamine for high-performance lithium batteries.ELECTROCHIMICA ACTA,282,711-718.
MLA	Fan, Xiaojing,et al."Smart short-chain bifunctional N, N-dimethylethanolamine for high-performance lithium batteries".ELECTROCHIMICA ACTA 282(2018):711-718.