Disiloxanes Containing Tertiary Amine and Dioxaborolane Groups as Bifunctional Electrolyte Additive for Improved Cycling Life of LiNi0.8Co0.1Mn0.1O2/Graphite Batteries

doi:10.1002/celc.202101628

GIEC OpenIR

	Disiloxanes Containing Tertiary Amine and Dioxaborolane Groups as Bifunctional Electrolyte Additive for Improved Cycling Life of LiNi0.8Co0.1Mn0.1O2/Graphite Batteries
	Chen, Cheng; Yan, Xiaodan; Zhang, Lingzhi
	2022-03-29
发表期刊	CHEMELECTROCHEM
ISSN	2196-0216
卷号	9 期号:6 页码:6
通讯作者	Zhang, Lingzhi(lzzhang@ms.giec.ac.cn)
摘要	A new disiloxane compound with tertiary amine and dioxaborolane group, N,N-dimethyl-2-(3-(1,1,3,3-tetramethyl-3-(3-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)ethoxy)propyl)disiloxanyl)propoxy)ethan-1-amine (TMBDSA), is designed and synthesized as functional electrolyte additive for improving the cycling stability of high-capacity nickel-rich LiNi0.8Co0.1Mn0.1O2 (NCM811). The NCM811/graphite full cell test shows that the cycling stability is considerably improved by adding TMBDSA (0.2 wt.%) in the baseline electrolyte, retaining 88 % of initial capacity as compared with 71 % for the cell with the baseline electrolyte at 1 C after 200 cycles. Even at a high rate of 10 C, the cell with TMBDSA delivers a high capacity of 140.2 mAh/g and outstanding cycling stability at high temperatures of 55 degrees C. The surface analysis and density functional theory calculation reveal that TMBDSA is oxidized prior to the carbonate components in the electrolyte to form a protective interphase layer on the cathode surface. In addition, TMBDSA can significantly suppress the hydrolysis of LiPF6 and the dissolution of transition metal ions (Ni, Co, and Mn) owing to the acid scavenging function of tertiary amine moiety. All the results demonstrate that TMBDSA can be potentially used as an efficient electrolyte additive for improving the cycling life of high energy density lithium-ion batteries using nickel-rich NCM811 cathode.
关键词	Cycle life Dioxaborolane Electrolyte additive Nickel-rich cathode LiNi0 8Co0 1Mn0 1O2
DOI	10.1002/celc.202101628
关键词[WOS]	LAYERED OXIDE CATHODES ; LITHIUM-ION BATTERY ; INTERFACIAL STABILITY ; THERMAL-STABILITY ; PERFORMANCE ; CARBONATE ; LINI0.6CO0.2MN0.2O2 ; HYDROLYSIS
收录类别	SCI
语种	英语
资助项目	K. C. Wong Education Foundation ; National Natural Science Foundation of China[21573239] ; Dongguan Municipal Project of Science and Technology
WOS研究方向	Electrochemistry
项目资助者	K. C. Wong Education Foundation ; National Natural Science Foundation of China ; Dongguan Municipal Project of Science and Technology
WOS类目	Electrochemistry
WOS记录号	WOS:000773947300011
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/36324
专题	中国科学院广州能源研究所
通讯作者	Zhang, Lingzhi
作者单位	Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Prov Key Lab New & Renewable Energy Res, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Chen, Cheng,Yan, Xiaodan,Zhang, Lingzhi. Disiloxanes Containing Tertiary Amine and Dioxaborolane Groups as Bifunctional Electrolyte Additive for Improved Cycling Life of LiNi0.8Co0.1Mn0.1O2/Graphite Batteries[J]. CHEMELECTROCHEM,2022,9(6):6.
APA	Chen, Cheng,Yan, Xiaodan,&Zhang, Lingzhi.(2022).Disiloxanes Containing Tertiary Amine and Dioxaborolane Groups as Bifunctional Electrolyte Additive for Improved Cycling Life of LiNi0.8Co0.1Mn0.1O2/Graphite Batteries.CHEMELECTROCHEM,9(6),6.
MLA	Chen, Cheng,et al."Disiloxanes Containing Tertiary Amine and Dioxaborolane Groups as Bifunctional Electrolyte Additive for Improved Cycling Life of LiNi0.8Co0.1Mn0.1O2/Graphite Batteries".CHEMELECTROCHEM 9.6(2022):6.