Generation of a highly conductive and stable solid electrolyte interphase at lithium anode under additional electric filed
文献类型：期刊论文
| 作者 | Chen, Yunyi1,3; Chen, Yongxiu4; Wang, Rui3; Lv, Xun2; Han, Yongsheng1,3 |
| 刊名 | Chemical Engineering Journal
 |
| 出版日期 | 2022-10-15 |
| 卷号 | 446 |
| ISSN号 | 13858947 |
| 关键词 | Anodes - Electric impedance measurement - Grain boundaries - Lithium compounds - Lithium-ion batteries - Seebeck effect - Solid electrolytes - Solid-State Batteries - Sulfur compounds - X ray photoelectron spectroscopy |
| DOI | 10.1016/j.cej.2022.137435 |
| 英文摘要 | The solid electrolyte interphase (SEI) generated spontaneously on the surface of lithium anode, is a protective layer to inhibit further reaction of electrolyte with lithium and to prevent the formation of lithium dendrites. The composition and properties of SEI layers determine the cycling performance of lithium batteries to some extent. Here we report a novel solution to optimize the SEI layer by applying an additional alternating current (AC) electric field during the generation of SEI. The application of an AC field enhances the association of anions and cations in the electrolytes, which results in an improved delivery of anions to the surface of lithium anode. The decomposition of anions at the surface leads to the formation of an anion-derived SEI layer containing a mass of LiF and Li2S particles. The grain boundaries among these particles provide fast diffusion channels for lithium ions, forming a high conductive SEI layer. The optimized composition of SEI layer is confirmed by X-ray photoelectron spectroscopy analysis and electrochemical characterizations. Through this strategy, the cycle performance of lithium batteries is greatly improved, and the stable cycling life of Cu@Li | Li cells and Cu@Li | NMC811 cells increases more than 3 times. 漏 2022 |
| 学科主题 | Negative Ions |
| 项目编号 | This work was supported by the National Natural Science Foundation of China (91934302, 21978298, U1862117), the Innovation Academy for Green Manufacture, Chinese Academy of Sciences, and the project from the State Key Laboratory of Multiphase Complex Systems (MPCS-2021-A-05). |
| 出版者 | Elsevier B.V. |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61262]  |
| 作者单位 | 1.School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China 2.Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, Chaoyang District; 100101, China 3.State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 4.School of Metallurgy and Materials, University of Birmingham, Edgbaston Birmingham, UK, BT15 2TT, United Kingdom |
| 推荐引用方式 GB/T 7714 | Chen, Yunyi,Chen, Yongxiu,Wang, Rui,et al. Generation of a highly conductive and stable solid electrolyte interphase at lithium anode under additional electric filed[J]. Chemical Engineering Journal,2022,446. |
| APA | Chen, Yunyi,Chen, Yongxiu,Wang, Rui,Lv, Xun,&Han, Yongsheng.(2022).Generation of a highly conductive and stable solid electrolyte interphase at lithium anode under additional electric filed.Chemical Engineering Journal,446. |
| MLA | Chen, Yunyi,et al."Generation of a highly conductive and stable solid electrolyte interphase at lithium anode under additional electric filed".Chemical Engineering Journal 446(2022). |
入库方式： OAI收割
来源：过程工程研究所
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