Atomic Defect Mediated Li-Ion Diffusion in a Lithium Lanthanum Titanate Solid-State Electrolyte
文献类型：期刊论文
| 作者 | Zhang, Lifeng3; Xu, Lei3; Nian, Yao2; Wang, Weizhen1; Han, You2; Luo, Langli2,3 |
| 刊名 | ACS NANO
 |
| 出版日期 | 2022-04-26 |
| 卷号 | 16期号:4页码:6898-6905 |
| ISSN号 | 1936-0851 |
| 关键词 | solid-state electrolytes lithium lanthanum titanium oxide transmission electron microscopy atomic defects Li diffusion |
| DOI | 10.1021/acsnano.2c02250 |
| 通讯作者 | Han, You(yhan@tju.edu.cn) ; Luo, Langli(luolangli@tju.edu.cn) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000813154500001 |
| 资助机构 | National Natural Science Foundation of China ; Haihe Laboratory of Sustainable Chemical Transformations |
| 源URL | [http://ir.imr.ac.cn/handle/321006/174777]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Han, You; Luo, Langli |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Chem Engn Tianj, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China 3.Tianjin Univ, Inst Mol Plus, Dept Chem, Haihe Lab Sustainable Chem Transformat, Tianjin 300072, 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. |
入库方式： OAI收割
来源：金属研究所
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