Structures of Solid-Electrolyte Interphases and Impacts on Initial-Stage Lithium Deposition in Pyrrolidinium-Based Ionic Liquids
文献类型：期刊论文
| 作者 | He, Jun-Wu3; Gu, Yu3; Wang, Wei-Wei3; Wang, Jun-Hao3; Chen, Zhao-Bin3; He, Hong-Yan2; Wu, Qi-Hui1; Yan, Jia-Wei3; Mao, Bing-Wei3 |
| 刊名 | CHEMELECTROCHEM
 |
| 出版日期 | 2020-11-17 |
| 页码 | 9 |
| 关键词 | Li metal electrodeposition nucleation and growth ionic liquid solid-electrolyte interphase TFSI and FSI anions |
| ISSN号 | 2196-0216 |
| DOI | 10.1002/celc.202001277 |
| 英文摘要 | Electrodeposition of lithium is of both fundamental significance and practical importance. However, Li deposition has to proceed beneath a solid-electrolyte interphase (SEI). Herein, we present a fundamental study on the formation of SEIs and their influences on Li initial-stage deposition on Cu in Py-14 cation-based ionic liquids (ILs) combined with different ratios of TFSI and FSI anions. Different SEIs are pre-formed on Cu by using cyclic voltammetry, followed by detailed characterizations by XPS and AFM, which elucidate that all the SEIs bear mosaic-like I-O structures but with different compositions and structures and varying thicknesses of approximately 60-150 nm. The Li initial-stage depositions are studied by using cyclic voltammetric and potential stepping techniques, and current-time transients are analyzed with the aid of the Scharifker-Hills model. Discrepancies in nucleation density and diffusion coefficients and their relationships with overpotentials are investigated in correlation with the SEI structures. The present work demonstrates that interfacial and bulk properties of SEI strongly affect the Li deposition processes, which provides opportunities for uniform Li deposition. |
| WOS关键词 | DIFFUSION-CONTROLLED GROWTH ; MOLTEN-SALTS ; METAL ; NUCLEATION ; ELECTRODEPOSITION ; MICROSCOPY ; MORPHOLOGY ; BATTERIES ; ANION ; BIS(FLUOROSULFONYL)IMIDE |
| 资助项目 | NSFC[21972119] ; NSFC[21673193] ; NSFC[21533006] ; CPSF[2019TQ0177] ; MOST[2015CB251102] |
| WOS研究方向 | Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000589759000001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | NSFC ; CPSF ; MOST |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/42546]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Yan, Jia-Wei; Mao, Bing-Wei |
| 作者单位 | 1.Jimei Univ, Coll Mech & Energy Engn, Xiamen 361021, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 3.Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Collaborat Innovat Ctr Chem Energy Mat IChEM, Dept Chem,Coll Chem & Chem Engn, Xiamen 361005, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Jun-Wu,Gu, Yu,Wang, Wei-Wei,et al. Structures of Solid-Electrolyte Interphases and Impacts on Initial-Stage Lithium Deposition in Pyrrolidinium-Based Ionic Liquids[J]. CHEMELECTROCHEM,2020:9. |
| APA | He, Jun-Wu.,Gu, Yu.,Wang, Wei-Wei.,Wang, Jun-Hao.,Chen, Zhao-Bin.,...&Mao, Bing-Wei.(2020).Structures of Solid-Electrolyte Interphases and Impacts on Initial-Stage Lithium Deposition in Pyrrolidinium-Based Ionic Liquids.CHEMELECTROCHEM,9. |
| MLA | He, Jun-Wu,et al."Structures of Solid-Electrolyte Interphases and Impacts on Initial-Stage Lithium Deposition in Pyrrolidinium-Based Ionic Liquids".CHEMELECTROCHEM (2020):9. |
入库方式： OAI收割
来源：过程工程研究所
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