Real-time mass spectrometric characterization of the solid-electrolyte interphase of a lithium-ion battery
文献类型：期刊论文
| 作者 | Zhou, Yufan; Su, Mao4,5,6; Yu, Xiaofei; Zhang, Yanyan; Wang, Jun-Gang; Ren, Xiaodi7; Cao, Ruiguo7; Xu, Wu7; Baer, Donald R.; Du, Yingge4 |
| 刊名 | NATURE NANOTECHNOLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 15期号:3页码:224 |
| ISSN号 | 1748-3387 |
| 关键词 | FORCE-FIELD DYNAMICS LIQUID METAL INTERFACE GRAPHITE SURFACE SIMULATIONS EFFICIENCY ENERGY |
| DOI | 10.1038/s41565-019-0618-4 |
| 英文摘要 | The solid-electrolyte interphase (SEI) dictates the performance of most batteries, but the understanding of its chemistry and structure is limited by the lack of in situ experimental tools. In this work, we present a dynamic picture of the SEI formation in lithium-ion batteries using in operando liquid secondary ion mass spectrometry in combination with molecular dynamics simulations. We find that before any interphasial chemistry occurs (during the initial charging), an electric double layer forms at the electrode/electrolyte interface due to the self-assembly of solvent molecules. The formation of the double layer is directed by Li+ and the electrode surface potential. The structure of this double layer predicts the eventual interphasial chemistry; in particular, the negatively charged electrode surface repels salt anions from the inner layer and results in an inner SEI that is thin, dense and inorganic in nature. It is this dense layer that is responsible for conducting Li+ and insulating electrons, the main functions of the SEI. An electrolyte-permeable and organic-rich outer layer appears after the formation of the inner layer. In the presence of a highly concentrated, fluoride-rich electrolyte, the inner SEI layer has an elevated concentration of LiF due to the presence of anions in the double layer. These real-time nanoscale observations will be helpful in engineering better interphases for future batteries. An operando mass spectrometry technique, along with molecular dynamics simulations, unveils the evolution of the solid-electrolyte interphase chemistry and structure in lithium-ion batteries during the first cycle. |
| 学科主题 | Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27077]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.US Army Res Lab, Energy & Biotechnol Div, Sensor & Electron Devices Directorate, Adelphi, MD 20783 USA 2.Pacific Northwest Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA 3.Shandong Univ, Inst Frontier & Interdisciplinar Sci, Qingdao, Peoples R China 4.Shandong Univ, Key Lab Particle Phys & Particle Irradiat MOE, Qingdao, Peoples R China 5.Pacific Northwest Natl Lab, Phys & Computat Sci Directorate, Richland, WA 99352 USA 6.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing, Peoples R China 7.Univ Chinese Acad Sci, Sch Phys Sci, Beijing, Peoples R China 8.Pacific Northwest Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA 9.US Army Res Lab, Joint Ctr Energy Storage Res, Adelphi, MD 20783 USA |
| 推荐引用方式 GB/T 7714 | Zhou, Yufan,Su, Mao,Yu, Xiaofei,et al. Real-time mass spectrometric characterization of the solid-electrolyte interphase of a lithium-ion battery[J]. NATURE NANOTECHNOLOGY,2020,15(3):224. |
| APA | Zhou, Yufan.,Su, Mao.,Yu, Xiaofei.,Zhang, Yanyan.,Wang, Jun-Gang.,...&Zhu, Zihua.(2020).Real-time mass spectrometric characterization of the solid-electrolyte interphase of a lithium-ion battery.NATURE NANOTECHNOLOGY,15(3),224. |
| MLA | Zhou, Yufan,et al."Real-time mass spectrometric characterization of the solid-electrolyte interphase of a lithium-ion battery".NATURE NANOTECHNOLOGY 15.3(2020):224. |
入库方式： OAI收割
来源：理论物理研究所
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