Compatibility between lithium difluoro (oxalate) borate-based electrolytes and Li1.2Mn0.54Ni0.13Co0.13O2 cathode for lithium-ion batteries

doi:10.1016/j.jelechem.2018.07.019

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Compatibility between lithium difluoro (oxalate) borate-based electrolytes and Li1.2Mn0.54Ni0.13Co0.13O2 cathode for lithium-ion batteries
	Li, Shiyou 1,2,3; Liang, Youwei 3; Xie, Jing 3; Ai, Ling 3; Xie, Yingchun 3; Li, Chunlei 2,3; Wang, Chao 3; Cui, Xiaoling 1,2,3
刊名	JOURNAL OF ELECTROANALYTICAL CHEMISTRY
	2018-08-15
卷号	823 页码:688-696
关键词	Lithium-ion batteries Li1.2Mn0.54Ni0.13Co0.13O2 Lithium difluoro (oxalate) borate Compatibility
ISSN号	1572-6657
DOI	10.1016/j.jelechem.2018.07.019
英文摘要	Lithium-rich layered oxide is a promising cathode material for high-energy density lithium ion batteries. Generally, it is essential to develop high-voltage electrolyte because electrolyte is one of the key factors that determines the capacity of cathode materials. In this work, lithium difluoro(oxalato) borate (LiODFB) is introduced as a novel lithium-salt for lithium-rich cathodes. The investigation reveals that the LiODFB modifies the surface film and forms a uniform and electrochemical stable cathode electrolyte interface (CEI) on the lithium-rich cathode. The LiODFB-derived CEI layer effectively suppresses severe electrolyte decomposition at high voltages and hinders undesirable phase transformation from layered to spinel-like phases during cycling. Furthermore, the Li1.2Mn0.54Ni0.13Co0.13O2/Li cell with the LiODFB-based electrolyte exhibits high capacity retention of 91.73% after 50 cycles and better rate capability of 195 mAh g(-1) at 2 C. The unique function of the LiODFB on the surface chemistry of lithium-rich cathodes is confirmed through X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy analyses.
资助项目	Gansu Province Science and Technology Major Project[17ZD2GC011]
WOS研究方向	Chemistry ; Electrochemistry
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000443664700084
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32507]
专题	石油化工学院
通讯作者	Cui, Xiaoling
作者单位	1.Qinghai Green Grass New Energy Technol Co Ltd, Qinghai Res Ctr Low Temp Lithium Ion Battery Tech, Xining 810000, Qinghai, Peoples R China 2.Gansu Engn Lab Electrolyte Mat Lithium Ion Batter, Lanzhou 730050, Gansu, Peoples R China 3.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Shiyou,Liang, Youwei,Xie, Jing,et al. Compatibility between lithium difluoro (oxalate) borate-based electrolytes and Li1.2Mn0.54Ni0.13Co0.13O2 cathode for lithium-ion batteries[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY,2018,823:688-696.
APA	Li, Shiyou.,Liang, Youwei.,Xie, Jing.,Ai, Ling.,Xie, Yingchun.,...&Cui, Xiaoling.(2018).Compatibility between lithium difluoro (oxalate) borate-based electrolytes and Li1.2Mn0.54Ni0.13Co0.13O2 cathode for lithium-ion batteries.JOURNAL OF ELECTROANALYTICAL CHEMISTRY,823,688-696.
MLA	Li, Shiyou,et al."Compatibility between lithium difluoro (oxalate) borate-based electrolytes and Li1.2Mn0.54Ni0.13Co0.13O2 cathode for lithium-ion batteries".JOURNAL OF ELECTROANALYTICAL CHEMISTRY 823(2018):688-696.