Electrochemical effect and mechanism of adiponitrile additive for high-voltage electrolyte

doi:10.1016/j.electacta.2016.11.022

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Electrochemical effect and mechanism of adiponitrile additive for high-voltage electrolyte
	Li, Shiyou; Zhao, Dongni; Wang, Peng; Cui, Xiaoling; Tang, Fengjuan
刊名	ELECTROCHIMICA ACTA
	2016-12-20
卷号	222 页码:668-677
关键词	Lithium-ion batteries Adiponitrile Lithium difluoro(oxalate)borate LiNi0.5Mn1.5O4 High-voltage electrolyte
ISSN号	0013-4686
DOI	10.1016/j.electacta.2016.11.022
英文摘要	To satisfy the need of 5 V high-voltage cathode materials, lithium difluoro(oxalato)borate (LiDFOB) with excellent film-forming property has been chosen as lithium salt, and adiponitrile (ADN) with stable electrochemical performance has been evaluated as functional additive. An electrochemical investigation of this novel electrolyte solution shows a wide electrochemical oxidation window of nearly 6.0 V vs Li+/Li. Due to the positive effect of ADN on the cathode/electrolyte interface, LiNi0.5Mn1.5O4/Li half-cell with ADN-adding electrolyte exhibits prominent rate capability and cyclability. It is believed that the improvement of electrochemical performances has benefitted greatly from interfacial impedance reducing. Two modeling hypotheses have been used to explain interfacial interaction between ADN and LiNi0.5Mn1.5O4, by the means of analysis of X-ray photoelectron spectroscopy and theoretical calculation. Results show that ADN can enrich the surface of cathode material to hinder the further decomposition of the electrolyte, and contribute to the formation of a cathode-electrolyte interface passivation film with protective and conductive properties. (C) 2016 Elsevier Ltd. All rights reserved.
资助项目	Natural Science Foundation of China[21406100][51502124] ; Science and Technology Support Project of Gansu Province[144GKCB029] ; Natural Science Foundation of Qinghai Province[2015-ZJ-933Q]
WOS研究方向	Electrochemistry
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000392566200075
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33502]
专题	石油化工学院
通讯作者	Cui, Xiaoling
作者单位	Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Li, Shiyou,Zhao, Dongni,Wang, Peng,et al. Electrochemical effect and mechanism of adiponitrile additive for high-voltage electrolyte[J]. ELECTROCHIMICA ACTA,2016,222:668-677.
APA	Li, Shiyou,Zhao, Dongni,Wang, Peng,Cui, Xiaoling,&Tang, Fengjuan.(2016).Electrochemical effect and mechanism of adiponitrile additive for high-voltage electrolyte.ELECTROCHIMICA ACTA,222,668-677.
MLA	Li, Shiyou,et al."Electrochemical effect and mechanism of adiponitrile additive for high-voltage electrolyte".ELECTROCHIMICA ACTA 222(2016):668-677.