Lanzhou University of Technology Institutional Repository (LUT_IR)
Effect of dual local structures of amorphous Fe-Si films on the performance of anode of lithium-ion batteries | |
Li, Xiaona1; Zheng, Yuehong2; Li, Zhumin1; Liu, Yubo1; Huang, Hao3; Wang, Qing3; Dong, Chuang1 | |
2020-03 | |
发表期刊 | MATERIALS CHEMISTRY AND PHYSICS |
ISSN | 0254-0584 |
卷号 | 243 |
摘要 | Amorphous silicon is a very promising anode material for lithium-ion batteries, but the poor cycle performance owing to volume expansion must be improved before application. In the present study, a series of amorphous FexSi100-x films with different local structures were prepared by magnetron sputtering system. The local structures of the films can be described using the cluster-plus-glue-atom model. For x = 5.3-14.0 at.%, the principal cluster is [Si-Si-4], for x = 24.2-46.8 at.%, the principal cluster is [Fe-Si8Fe2], especially for x = 19.1 at. %, the film has both clusters. The films on copper foil substrates were tested as the anode electrode material of lithium-ion batteries. The results show that the cycling stability of the thin film electrode increases with increasing Fe content, but the specific capacity decreases. The impedance of the films also shows two completely different trends with the composition, which further confirms that these Fe-Si amorphous films have different local structures. Especially for the Fe19.1Si80.9 film, the charge transfer between the two electrolyte/electrode interfaces has the two smallest impedances, indicating that the film has the highest charge transfer efficiency. |
关键词 | Amorphous film Local structure Anode material |
DOI | 10.1016/j.matchemphys.2020.122666 |
收录类别 | SCI |
语种 | 英语 |
资助项目 | Natural Science Foundation of Liaoning Province, China[20170540178] ; Fundamental Research Funds for the Central Universities[DUT17LAB09] |
WOS研究方向 | Materials Science |
WOS类目 | Materials Science, Multidisciplinary |
WOS记录号 | WOS:000523631300097 |
出版者 | ELSEVIER SCIENCE SA |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/76188 |
专题 | 省部共建有色金属先进加工与再利用国家重点实验室 |
通讯作者 | Li, Xiaona; Huang, Hao |
作者单位 | 1.Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China 3.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Xiaona,Zheng, Yuehong,Li, Zhumin,et al. Effect of dual local structures of amorphous Fe-Si films on the performance of anode of lithium-ion batteries[J]. MATERIALS CHEMISTRY AND PHYSICS,2020,243. |
APA | Li, Xiaona.,Zheng, Yuehong.,Li, Zhumin.,Liu, Yubo.,Huang, Hao.,...&Dong, Chuang.(2020).Effect of dual local structures of amorphous Fe-Si films on the performance of anode of lithium-ion batteries.MATERIALS CHEMISTRY AND PHYSICS,243. |
MLA | Li, Xiaona,et al."Effect of dual local structures of amorphous Fe-Si films on the performance of anode of lithium-ion batteries".MATERIALS CHEMISTRY AND PHYSICS 243(2020). |
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