Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization

doi:10.1039/d1ra05156c

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	Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization
	Lu, Hongli 1,2; Zeng, Shuangwei 1,2; Zhao, Dongni 1,2; Wang, Jie 1,2; Quan, Yin 1,2; Xu, Fei 1,2; Li, Faqiang 3; Li, Shiyou 1,2
刊名	RSC ADVANCES
	2021-08-10
卷号	11 期号:42 页码:26102-26109
关键词	Aluminum compounds Aluminum corrosion Cathodes Electrochemical corrosion Electrolytes Iron compounds Linear programming Lithium-ion batteries Phosphorus compounds Corrosion inhibition Electrochemical performance Electrochemical testing Electrolyte compositions Electrolyte formulation Electrolyte systems High-performance lithium-ion batteries Lithium iron phosphates
DOI	10.1039/d1ra05156c
英文摘要	The optimizing method of electrolyte formulation is always vital for the development of high-performance lithium-ion batteries. Traditional optimization methods are mainly aimed at the optimization of the electrolyte composition type, and less attention is paid to the optimization of the composition proportion in a certain electrolyte formulation. In this paper, in order to balance the relationship between aluminum (Al) foil corrosion inhibition and battery electrochemical performance, the electrolyte system LiFSI0.6-LiBOB0.4-EC/DEC/EMC (1 : 1 : 1, by volume) was optimized by combining the simplex method, normalization and electrochemical testing. A lithium iron phosphate (LiFePO4) cathode with the optimized electrolyte of LiFSI0.53-LiBOB0.35-EC/DEC/EMC (1.3 : 1.5 : 1.5) delivers a high capacity (143.1 mA h g(-1) at 0.5C) and remarkable cycle life (94.9% retention after 100 cycles) at 45 degrees C. The outstanding performance is attributed to the composition of the cathode electrolyte interphase (CEI) containing the solid and dense LiF, AlF3, B2O3 and Li2CO3. This provides a new method and idea for future electrolyte formulation optimization.
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000680655300032
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148912]
专题	石油化工学院
作者单位	1.Lanzhou Univ Technol, Sch Petrochem Technol, Lanzhou 730050, Peoples R China; 2.Gansu Engn Lab Electrolyte Mat Lithium Ion Batter, Lanzhou 730050, Peoples R China; 3.Linyi Univ, Sch Mat Sci & Engn, Linyi 276005, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Lu, Hongli,Zeng, Shuangwei,Zhao, Dongni,et al. Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization[J]. RSC ADVANCES,2021,11(42):26102-26109.
APA	Lu, Hongli.,Zeng, Shuangwei.,Zhao, Dongni.,Wang, Jie.,Quan, Yin.,...&Li, Shiyou.(2021).Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization.RSC ADVANCES,11(42),26102-26109.
MLA	Lu, Hongli,et al."Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization".RSC ADVANCES 11.42(2021):26102-26109.