A Safe Electrolyte Enriched with Flame-Retardant Solvents for High-Voltage LiCoO<sub>2</sub>||Graphite Pouch Cells

doi:10.1021/acsenergylett.4c02466

IMR OpenIR

	A Safe Electrolyte Enriched with Flame-Retardant Solvents for High-Voltage LiCoO₂\|\|Graphite Pouch Cells
	Yang, Chao 1; Zhou, Xing 1; Sun, Ruitao 1; Hu, Wenxi 1; Wang, Meilong 1; Dong, Xiaoli 3,4; Piao, Nan 5; Han, Jin 2; Chen, Wen 1; You, Ya 1,2
通讯作者	Han, Jin(jinhan@whut.edu.cn) ; You, Ya(youya@whut.edu.cn)
	2024-10-18
发表期刊	ACS ENERGY LETTERS
ISSN	2380-8195
卷号	9 期号:11 页码:5364-5372
摘要	Employing a flame-retardant solvent (FRS) in the electrolyte has shown great potential for improving the safety of lithium-ion batteries (LIBs). Nevertheless, their poor compatibility with salts and commonly used solvents leads to the formation of a heterogeneous system, which drastically limits their concentration in the electrolyte and consequently deteriorates the safety performance. In this work, we employ a bridging solvent diethyl carbonate to raise the solubility of a highly effective FRS, ethoxy pentafluorocyclotriphosphonitrile (PFPN), to a concentration as high as 75 vol % in the electrolyte. The target electrolyte forms a stable N/P-rich cathode-electrolyte interface to protect the electrode from oxygen evolution and transition-metal ion dissolution, thereby enabling the LiCoO2 cathode to preserve 72% capacity retention over 500 cycles at 4.62 V. Moreover, this electrolyte can effectively delay occurrence time and improve the critical temperature of thermal runaway of 1 Ah LiCoO2\|\|graphite pouch cells. Our work proposes a new direction for nonflammable electrolytes toward safe and high-energy LIBs.
资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China
DOI	10.1021/acsenergylett.4c02466
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[2022YFB3803400] ; National Key Research and Development Program of China[52172234] ; National Key Research and Development Program of China[52302306] ; National Natural Science Foundation of China
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:001340301700001
出版者	AMER CHEMICAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190937
专题	中国科学院金属研究所
通讯作者	Han, Jin; You, Ya
作者单位	1.Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China 2.Wuhan Univ Technol, Int Sch Mat Sci & Engn, Sch Mat Sci & Microelect, Wuhan 430070, Peoples R China 3.Fudan Univ, Inst New Energy, iChEM Collaborat Innovat Ctr Chem Energy Mat, Dept Chem, Shanghai 200433, Peoples R China 4.Fudan Univ, Inst New Energy, Collaborat Innovat Ctr Chem Energy Mat, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yang, Chao,Zhou, Xing,Sun, Ruitao,et al. A Safe Electrolyte Enriched with Flame-Retardant Solvents for High-Voltage LiCoO₂\|\|Graphite Pouch Cells[J]. ACS ENERGY LETTERS,2024,9(11):5364-5372.
APA	Yang, Chao.,Zhou, Xing.,Sun, Ruitao.,Hu, Wenxi.,Wang, Meilong.,...&You, Ya.(2024).A Safe Electrolyte Enriched with Flame-Retardant Solvents for High-Voltage LiCoO₂\|\|Graphite Pouch Cells.ACS ENERGY LETTERS,9(11),5364-5372.
MLA	Yang, Chao,et al."A Safe Electrolyte Enriched with Flame-Retardant Solvents for High-Voltage LiCoO₂\|\|Graphite Pouch Cells".ACS ENERGY LETTERS 9.11(2024):5364-5372.