Aminoalkyldisiloxane as effective electrolyte additive for improving high temperature cycle life of nickel-rich LiNi0.6Co0.2Mn0.2O2/graphite batteries

doi:10.1016/j.jpowsour.2020.228099

	Aminoalkyldisiloxane as effective electrolyte additive for improving high temperature cycle life of nickel-rich LiNi0.6Co0.2Mn0.2O2/graphite batteries
	Yan, Xiaodan 2; Chen, Cheng 2; Zhu, Xuequan 1; Pan, Lining 1; Zhao, Xinyue 2; Zhang, Lingzhi 2
刊名	JOURNAL OF POWER SOURCES
	2020-06-15
卷号	461 页码:10
关键词	Aminoalkyldisiloxane Electrolyte additive Transition metal dissolution High temperature LiNi0.6Co0.2Mn0.2O2/graphite pouch cell
ISSN号	0378-7753
DOI	10.1016/j.jpowsour.2020.228099
通讯作者	Zhang, Lingzhi(lzzhang@ms.giec.ac.cn)
英文摘要	A novel aminoakyldisiloxane compound, (3-(N,N-dimethylamino)diethoxypropyl) pentamethyldisiloxane (DSON), is reported as an effective electrolyte additive for improving the electrochemical performances of high energy density power batteries of nickel-rich LiNi0.6Co0.2Mn0.2O2 (NCM622)/graphite. The NCM622/graphite cells using DSON addition in the carbonate-based reference electrolyte exhibit enhanced electrochemical performances, especially high temperature performances including long cycle life and high temperature storage. The pouch cell (1 Ah) with 0.2 wt% DSON retained a capacity of 88% as compared with 84% for that without DSON in electrolyte after 200 cycles at 45 degrees C. The mechanism investigation reveals that DSON acts as a film-forming additive for constructing uniform conductive cathode electrolyte interphase (CEI) layer upon NCM622 particles, which suppresses the internal cracks and prohibits the irreversible phase transformation of NCM622. DSON also serves as an effective water/acid scavenger and inhibits the hydrolysis of LiPF6, thus effectively blocking the occurrence of side reactions and the dissolution of transition metal ions from cathode. Therefore, NCM622 cathode sheet maintains a better integrity surface morphology after 100 cycles. This work demonstrates that aminoakyldisiloxane is promising for practical use as effective electrolyte additive for high energy density power batteries of nickel-rich NCM/graphite.
资助项目	K. C. Wong Education Foundation ; Guangdong Special Support Plan[2014TX01N014] ; Guangdong Provincial Project for Science and Technology[2015B010135008] ; Guangzhou Municipal Project for Science and Technology[2014Y200012] ; National Natural Science Foundation of China[21573239/51602312]
WOS关键词	LITHIUM-ION BATTERY ; ELECTROCHEMICAL PERFORMANCE ; STABILITY ; SAFETY
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000530838000002
资助机构	K. C. Wong Education Foundation ; Guangdong Special Support Plan ; Guangdong Provincial Project for Science and Technology ; Guangzhou Municipal Project for Science and Technology ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/26938]
专题	中国科学院广州能源研究所
通讯作者	Zhang, Lingzhi
作者单位	1.ShanShan Adv Mat Qu Zhou CO LTD, Qu Zhou 324012, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangdong Prov Key Lab New & Renewable Energy Res, 2 Nengyuan Rd, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Yan, Xiaodan,Chen, Cheng,Zhu, Xuequan,et al. Aminoalkyldisiloxane as effective electrolyte additive for improving high temperature cycle life of nickel-rich LiNi0.6Co0.2Mn0.2O2/graphite batteries[J]. JOURNAL OF POWER SOURCES,2020,461:10.
APA	Yan, Xiaodan,Chen, Cheng,Zhu, Xuequan,Pan, Lining,Zhao, Xinyue,&Zhang, Lingzhi.(2020).Aminoalkyldisiloxane as effective electrolyte additive for improving high temperature cycle life of nickel-rich LiNi0.6Co0.2Mn0.2O2/graphite batteries.JOURNAL OF POWER SOURCES,461,10.
MLA	Yan, Xiaodan,et al."Aminoalkyldisiloxane as effective electrolyte additive for improving high temperature cycle life of nickel-rich LiNi0.6Co0.2Mn0.2O2/graphite batteries".JOURNAL OF POWER SOURCES 461(2020):10.