"In-N-out" design enabling high-content triethyl phosphate-based non-flammable and high-conductivity electrolytes for lithium-ion batteries

doi:10.1007/s11426-023-1803-x

IMR OpenIR

	"In-N-out" design enabling high-content triethyl phosphate-based non-flammable and high-conductivity electrolytes for lithium-ion batteries
	Liu, Mengchuang 1,2; Ma, Fenfen 3; Ge, Zicheng 1; Zeng, Ziqi 1; Wu, Qiang 1; Yan, Hui 4; Wu, Yuanke 1; Lei, Sheng 1; Zhu, Yanli 5; Cheng, Shijie 1; Xie, Jia 1
通讯作者	Zeng, Ziqi(ziqizeng@hust.edu.cn) ; Zhu, Yanli(zhuyanli1999@bit.edu.cn) ; Xie, Jia(xiejia@hust.edu.cn)
	2023-09-20
发表期刊	SCIENCE CHINA-CHEMISTRY
ISSN	1674-7291
页码	8
摘要	Safety issues related to flammable electrolytes in lithium-ion batteries (LIBs) remain a major challenge for their extended applications. The use of non-flammable phosphate-based electrolytes has proved the validity in inhibiting the combustion of LIBs. However, the strong interaction between Li+ and phosphate leads to a dominant solid electrolyte interphase (SEI) with limited electronic shielding, resulting in the poor Li+ intercalation at the graphite (Gr) anode when using high-phosphate-content electrolytes. To mitigate this issue and improve Li+ insertion, we propose an "In-N-Out" strategy to render phosphates "non-coordinative". By employing a combination of strongly polar solvents for a "block effect" and weakly polar solvents for a "drag effect", we reduce the Li+-phosphate interaction. As a result, phosphates remain in the electrolyte phase ("In"), minimizing their impact on the incompatibility with the Gr electrode ("Out"). We have developed a non-flammable electrolyte with high triethyl phosphate (TEP) content (>60 wt.%), demonstrating the excellent ion conductivity (5.94 mS cm (-1) at 30 degrees C) and reversible Li+ intercalation at a standard concentration (similar to 1 mol L (-1)). This approach enables the manipulation of multiple electrolyte functions and holds the promise for the development of safe electrochemical energy storage systems using non flammable electrolytes.
关键词	lithium-ion batteries graphite anode high-phosphate-content electrolytes non-flammable electrolyte excellent ion conductivity standard concentration
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China
DOI	10.1007/s11426-023-1803-x
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2022YFB2404800] ; National Natural Science Foundation of China[52022013] ; National Natural Science Foundation of China[51974031] ; National Natural Science Foundation of China[U22A20438]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:001070339100002
出版者	SCIENCE PRESS
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179377
专题	中国科学院金属研究所
通讯作者	Zeng, Ziqi; Zhu, Yanli; Xie, Jia
作者单位	1.Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China 2.Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Wuhan 430074, Peoples R China 3.GuSu Lab Mat, Suzhou 215123, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110000, Peoples R China 5.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Liu, Mengchuang,Ma, Fenfen,Ge, Zicheng,et al. "In-N-out" design enabling high-content triethyl phosphate-based non-flammable and high-conductivity electrolytes for lithium-ion batteries[J]. SCIENCE CHINA-CHEMISTRY,2023:8.
APA	Liu, Mengchuang.,Ma, Fenfen.,Ge, Zicheng.,Zeng, Ziqi.,Wu, Qiang.,...&Xie, Jia.(2023)."In-N-out" design enabling high-content triethyl phosphate-based non-flammable and high-conductivity electrolytes for lithium-ion batteries.SCIENCE CHINA-CHEMISTRY,8.
MLA	Liu, Mengchuang,et al.""In-N-out" design enabling high-content triethyl phosphate-based non-flammable and high-conductivity electrolytes for lithium-ion batteries".SCIENCE CHINA-CHEMISTRY (2023):8.