| Atomic Defect Mediated Li-Ion Diffusion in a Lithium Lanthanum Titanate Solid-State Electrolyte | |
| Zhang, Lifeng1; Xu, Lei1; Nian, Yao2; Wang, Weizhen3; Han, You2; Luo, Langli1,2 | |
| Corresponding Author | Han, You(yhan@tju.edu.cn) ; Luo, Langli(luolangli@tju.edu.cn) |
| 2022-04-26 | |
| Source Publication | ACS NANO
 |
| ISSN | 1936-0851 |
| Volume | 16Issue:4Pages:6898-6905 |
| Abstract | 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. |
| Keyword | solid-state electrolytes lithium lanthanum titanium oxide transmission electron microscopy atomic defects Li diffusion |
| Funding Organization | National Natural Science Foundation of China ; Haihe Laboratory of Sustainable Chemical Transformations |
| DOI | 10.1021/acsnano.2c02250 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[21873069] ; National Natural Science Foundation of China[U20A20151] ; Haihe Laboratory of Sustainable Chemical Transformations |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000813154500001 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174778 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Han, You; Luo, Langli |
| Affiliation | 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 |
| Recommended Citation 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. |
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