Lithium Expulsion from the Solid-State Electrolyte Li6.4La3Zr1.4Ta0.6O12 by Controlled Electron Injection in a SEM

doi:10.1021/acsami.7b17276

	Lithium Expulsion from the Solid-State Electrolyte Li6.4La3Zr1.4Ta0.6O12 by Controlled Electron Injection in a SEM
	Xie, Xiaowei ; Xing, Juanjuan ; Hu, Dongli ; Gu, Hui ; Chen, Cheng 1,2; Guo, Xiangxin 1,3
刊名	ACS APPLIED MATERIALS & INTERFACES
	2018
卷号	10 期号:6 页码:5978
关键词	lithium ion solid-state electrolyte cubic garnet Li6.4La3Zr1.4Ta0.6O12 electron beam irradiation lithium expulsion ion migration rate
ISSN号	1944-8244
DOI	10.1021/acsami.7b17276
英文摘要	The garnet ionic conductor is one of the promising candidate electrolytes for all-solid-state secondary lithium batteries, thanks to its high lithium ion conductivity and good thermal and chemical stability. However, its microstructure is difficult to approach because it is very sensitive to the inquisitive electron beam. In this study based on a scanning electron microscope (SEM), we found that the electron beam expulses the lithium out of Li6.4La3Zr1.4Ta0.6O12 (LLZTO), and the expulsed zone expands to where a stationary beam could extend and penetrate. The expulsion of metallic lithium was confirmed by its oxidation reaction after nitrogen inflow into the SEM. This phenomenon may provide us an effective probe to peer into the conductive nature of this electrolyte. A frame-scan scheme is employed to measure the expulsion rate by controllable and more uniform incidence of electrons. Lithium accumulation processes are continuously recorded and classified into four modes by fitting its growth behaviors into a dynamic equation that is mainly related to the initial ion concentration and ion migration rate in the electrolyte. These results open a novel possibility of using the SEM probe to gain dynamic information on ion migration and lithium metal growth in solid materials.
学科主题	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000425572700094
资助机构	This work was financially supported by the National Natural Science Foundation of China (grant nos. 51532002, 51532006, and 51771222) and by the Science and Technology Commission of Shanghai Municipality under grant no. 16DZ2260600. The authors would like to thank Prof. Bingkun Guo, Prof. Si-qi Shi, and Dr. Xian-hao Wang for beneficial discussion. ; This work was financially supported by the National Natural Science Foundation of China (grant nos. 51532002, 51532006, and 51771222) and by the Science and Technology Commission of Shanghai Municipality under grant no. 16DZ2260600. The authors would like to thank Prof. Bingkun Guo, Prof. Si-qi Shi, and Dr. Xian-hao Wang for beneficial discussion.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24488]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Shanghai Univ, Mat Genome Inst, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Xie, Xiaowei,Xing, Juanjuan,Hu, Dongli,et al. Lithium Expulsion from the Solid-State Electrolyte Li6.4La3Zr1.4Ta0.6O12 by Controlled Electron Injection in a SEM[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(6):5978, 5983.
APA	Xie, Xiaowei,Xing, Juanjuan,Hu, Dongli,Gu, Hui,Chen, Cheng,&Guo, Xiangxin.(2018).Lithium Expulsion from the Solid-State Electrolyte Li6.4La3Zr1.4Ta0.6O12 by Controlled Electron Injection in a SEM.ACS APPLIED MATERIALS & INTERFACES,10(6),5978.
MLA	Xie, Xiaowei,et al."Lithium Expulsion from the Solid-State Electrolyte Li6.4La3Zr1.4Ta0.6O12 by Controlled Electron Injection in a SEM".ACS APPLIED MATERIALS & INTERFACES 10.6(2018):5978.