Atomic Defect Mediated Li-Ion Diffusion in a Lithium Lanthanum Titanate Solid-State Electrolyte

doi:10.1021/acsnano.2c02250

IMR OpenIR

	Atomic Defect Mediated Li-Ion Diffusion in a Lithium Lanthanum Titanate Solid-State Electrolyte
	Zhang, Lifeng 1; Xu, Lei 1; Nian, Yao 2; Wang, Weizhen 3; Han, You 2; Luo, Langli 1,2
通讯作者	Han, You(yhan@tju.edu.cn) ; Luo, Langli(luolangli@tju.edu.cn)
	2022-04-26
发表期刊	ACS NANO
ISSN	1936-0851
卷号	16 期号:4 页码:6898-6905
摘要	Lithium lanthanum titanium oxide (LLTO) as a fast Li-ion conductor is a promising candidate for future allsolid-state Li batteries. Fundamental understanding of the microstructure of LLTO and its effect on the Li+ diffusion mechanism, especially across different length scales and interfaces, is a prerequisite to improving the material design and processing development of oxide-based solid electrolytes. Herein, through detailed structural analysis of LLTO ceramic pellets by aberration-corrected transmission electron microscopy, we discovered previously unreported intrinsic planar defects in LLTO single-crystal grains. These planar defects feature an antiphase boundary along specific crystal planes with a "rock-salt" structure enriched by Li within a few atomic layers. Corroborated by density-functional-theory-based calculations, we show an increased diffusion barrier across these planar defects inevitably lowers the bulk Li+ diffusivity of the oxide electrolyte.
关键词	solid-state electrolytes lithium lanthanum titanium oxide transmission electron microscopy atomic defects Li diffusion
资助者	National Natural Science Foundation of China ; Haihe Laboratory of Sustainable Chemical Transformations
DOI	10.1021/acsnano.2c02250
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21873069] ; National Natural Science Foundation of China[U20A20151] ; Haihe Laboratory of Sustainable Chemical Transformations
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000813154500001
出版者	AMER CHEMICAL SOC
引用统计	被引频次：6[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/321006/174778
专题	中国科学院金属研究所
通讯作者	Han, You; Luo, Langli
作者单位	1.Tianjin Univ, Inst Mol Plus, Dept Chem, Haihe Lab Sustainable Chem Transformat, Tianjin 300072, Peoples R China 2.Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Chem Engn Tianj, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China 3.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	Zhang, Lifeng,Xu, Lei,Nian, Yao,et al. Atomic Defect Mediated Li-Ion Diffusion in a Lithium Lanthanum Titanate Solid-State Electrolyte[J]. ACS NANO,2022,16(4):6898-6905.
APA	Zhang, Lifeng,Xu, Lei,Nian, Yao,Wang, Weizhen,Han, You,&Luo, Langli.(2022).Atomic Defect Mediated Li-Ion Diffusion in a Lithium Lanthanum Titanate Solid-State Electrolyte.ACS NANO,16(4),6898-6905.
MLA	Zhang, Lifeng,et al."Atomic Defect Mediated Li-Ion Diffusion in a Lithium Lanthanum Titanate Solid-State Electrolyte".ACS NANO 16.4(2022):6898-6905.