An improved method for synthesis of lithium difluoro(oxalato)borate and effects of sulfolane on the electrochemical performances of lithium-ion batteries

ISL OpenIR > 青海盐湖研究所知识仓储

	An improved method for synthesis of lithium difluoro(oxalato)borate and effects of sulfolane on the electrochemical performances of lithium-ion batteries
	Li, Shiyou 1; Zhao, Wei 1; Cui, Xiaoling 1; Zhao, Yangyu 1; Li, Bucheng 1,2; Zhang, Hongming 1; Li, Yongli 1; Li, Guixian 1; Ye, Xiushen2 ; Luo, Yongchun 3
	2013-02-28
发表期刊	ELECTROCHIMICA ACTA
卷号	91 页码:282-292
关键词	Lithium-ion Battery Lithium Difluoro(Oxalato)Borate Sulfolane Sulfite
摘要	Lithium difluoro(oxalato)borate (LiODFB) (99.5%, by weight) is synthesized by an improved method, with the co-product of LiBF4 (99.5%, by weight). The electrochemical behaviors of sulfolane (SL) with LiODFB are studied by employment dimethyl sulfite (DMS) as a mixed solvent. It shows that 0.9 mol L-1 LiODFB-SL/DMS (1:1, by volume) electrolyte has considered stability against oxidative decomposition (>5.5 V) and satisfactory conductivity. Electrochemical reductions of SL and DMS would occur nearly at the same level of ODFB anions. Further studies show that SL is the main and key reason during the formation process of an excellent solid electrolyte interphase (SEI) layer. When used in Li/MCMB cells, 0.9 mol L-1 LiODFB-SL/DMS electrolyte exhibits not only excellent film-forming characteristics, but also stable cycle performance. Besides, when used in LiFePO4/Li cells, 0.9 mol L-1 LiODFB-SL/DMS electrolyte exhibits several advantages, for example, the more stable electrochemical performances even at elevated and relatively low temperatures. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/4421
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所盐湖资源与化学实验室
作者单位	1.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China 3.Lanzhou Univ Technol, Coll Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Li, Shiyou,Zhao, Wei,Cui, Xiaoling,et al. An improved method for synthesis of lithium difluoro(oxalato)borate and effects of sulfolane on the electrochemical performances of lithium-ion batteries[J]. ELECTROCHIMICA ACTA,2013,91:282-292.
APA	Li, Shiyou.,Zhao, Wei.,Cui, Xiaoling.,Zhao, Yangyu.,Li, Bucheng.,...&Luo, Yongchun.(2013).An improved method for synthesis of lithium difluoro(oxalato)borate and effects of sulfolane on the electrochemical performances of lithium-ion batteries.ELECTROCHIMICA ACTA,91,282-292.
MLA	Li, Shiyou,et al."An improved method for synthesis of lithium difluoro(oxalato)borate and effects of sulfolane on the electrochemical performances of lithium-ion batteries".ELECTROCHIMICA ACTA 91(2013):282-292.