A method for rapidly optimizing the composition of an electrolyte

doi:10.1007/s11581-022-04500-y

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	A method for rapidly optimizing the composition of an electrolyte
	Quan, Yin 1,2,3; Li, Chunlei 1,2,3; Zhang, Feilong 1,2,3; Li, Baoqiang 1,2,3; Zhang, Yulong 1,2,3; Zhang, Ningshuang 1,2,3; Li, Shiyou 1,2,3
刊名	IONICS
	2022
卷号	28 期号:5 页码:2259-2265
关键词	Simplex method Evaluation index normalization Sensitivity Electrolyte composition
ISSN号	0947-7047
DOI	10.1007/s11581-022-04500-y
英文摘要	Optimization of the ratio of electrolyte components is an effective strategy to improve the electrochemical performance of lithium-ion batteries. Herein, a novel method combining sensitivity and simplex method (abbreviated as QY) is proposed for small-scale optimization of the fraction ratio of 1 mol L-1 LiPF6-ethylene carbonate (EC)/diethyl carbonate (DEC) (with the volume ratio of 1: 1). Firstly, the performance indexes (ionic conductivity, charge-transfer impedance, leakage current, and initial coulombic efficiency) that can be obtained within a relatively short time are selected, and then index normalization is performed to analyze the sensitivity of these indexes based on the change of electrolyte composition. Secondly, the leakage current and charge-transfer impedance are recognized as the main index that affect the performance of Li/LiNi0.5Co0.2Mn0.3O2 cells, and the composition is optimized to 1.03 mol L-1 LiPF6-EC/DEC (with the volume ratio of 1.05: 1). Finally, the improved performance of optimized electrolyte is certified, indicating that the method is suitable for optimization of a complex system in a short test period with fewer experiments.
WOS研究方向	Chemistry ; Electrochemistry ; Physics
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000766037500001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158112]
专题	石油化工学院
作者单位	1.Key Lab Low Carbon Energy & Chem Engn Gansu Prov, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Petrochem Technol, Lanzhou 730050, Peoples R China; 3.Gansu Engn Lab Elect Mat Lithium Ion Battery, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Quan, Yin,Li, Chunlei,Zhang, Feilong,et al. A method for rapidly optimizing the composition of an electrolyte[J]. IONICS,2022,28(5):2259-2265.
APA	Quan, Yin.,Li, Chunlei.,Zhang, Feilong.,Li, Baoqiang.,Zhang, Yulong.,...&Li, Shiyou.(2022).A method for rapidly optimizing the composition of an electrolyte.IONICS,28(5),2259-2265.
MLA	Quan, Yin,et al."A method for rapidly optimizing the composition of an electrolyte".IONICS 28.5(2022):2259-2265.