Multilevel regulation of Li plus -solvent interaction for fluorophosphate-based nonflammable electrolyte enabling lithium-ion batteries with long calendar life

doi:10.1016/j.cej.2024.154146

IMR OpenIR

	Multilevel regulation of Li plus -solvent interaction for fluorophosphate-based nonflammable electrolyte enabling lithium-ion batteries with long calendar life
	Liu, Mengchuang 1; Zeng, Ziqi 2; Yan, Hui 3; Wu, Qiang 2; Wu, Yuanke 2; Liu, Wei 2; Lei, Sheng 2; Liao, Cong 2; Ai, Xinping 4; Cheng, Shijie 2; Xie, Jia 2
通讯作者	Zeng, Ziqi(ziqizeng@hust.edu.cn) ; Xie, Jia(xiejia@hust.edu.cn)
	2024-09-15
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
卷号	496 页码:9
摘要	Carbonate-based electrolytes have been instrumental in extending the applicability of lithium-ion batteries (LIBs). However, their inherent high flammability contributes to frequent safety incidents, posing formidable challenges for the evolution of next-generation LIBs. Non-flammable electrolytes incorporating triethyl fluorophosphate (TFP) emerges as a promising solution. Nevertheless, TFP's suboptimal reduction stability and limited electronic shielding of its reduction product impede compatibility with graphite (Gr) electrode. To address these challenges, we employ solvents as primary regulators to mitigate TFP-Li+ interaction. Simultaneously, anions serve as alternative regulators, preventing the formation of TFP-Li+ clusters during the cells' dynamic operation. This multilevel regulation enhances TFP's reduction stability throughout the entire lifespan of cells. Developed nonflammable electrolytes with high content of 83.3 vol% TFP enable Gr anodes achieving approximately 92.7 % capacity retention after 200 cycles. Practical 1Ah Gr\|\|LiNi0.65Co0.15Mn0.2O2 pouch-cells deliver remarkable 96.5 % capacity retention after 600 cycles during 6 months of operation with a 99.98 % average CE. The extremely long-cycle calendar life and stability first verify the possibility of electrolytes containing high content TFP into commercial application. These findings not only introduce a fresh strategy for improving solvents' reduction stability, but also contribute to the advancement of safer LIBs, marking a significant step forward in battery research.
关键词	Lithium-ion batteries Tris(2,2,2-trifluoroethyl) phosphate Multilevel regulation Nonflammable electrolytes Long-cycle calendar life
资助者	National Natural Science Foundation of China ; Analytical and Testing Center of HUST
DOI	10.1016/j.cej.2024.154146
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[U22A20438] ; National Natural Science Foundation of China[52377208] ; Analytical and Testing Center of HUST
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:001279490800001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188449
专题	中国科学院金属研究所
通讯作者	Zeng, Ziqi; Xie, Jia
作者单位	1.Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Wuhan 430074, Peoples R China 2.Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Technol, Wuhan 430074, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110000, Peoples R China 4.Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Liu, Mengchuang,Zeng, Ziqi,Yan, Hui,et al. Multilevel regulation of Li plus -solvent interaction for fluorophosphate-based nonflammable electrolyte enabling lithium-ion batteries with long calendar life[J]. CHEMICAL ENGINEERING JOURNAL,2024,496:9.
APA	Liu, Mengchuang.,Zeng, Ziqi.,Yan, Hui.,Wu, Qiang.,Wu, Yuanke.,...&Xie, Jia.(2024).Multilevel regulation of Li plus -solvent interaction for fluorophosphate-based nonflammable electrolyte enabling lithium-ion batteries with long calendar life.CHEMICAL ENGINEERING JOURNAL,496,9.
MLA	Liu, Mengchuang,et al."Multilevel regulation of Li plus -solvent interaction for fluorophosphate-based nonflammable electrolyte enabling lithium-ion batteries with long calendar life".CHEMICAL ENGINEERING JOURNAL 496(2024):9.