Atomic structure and electrical property of ionic liquids at the MoS2 electrode with varying interlayer spacing | |
Wang, Meichen1,3; Wang, Yanlei3; Li, Minjie2; Wang, Sufan1; He, Hongyan3 | |
刊名 | JOURNAL OF MOLECULAR MODELING |
2021-01-18 | |
卷号 | 27期号:2页码:10 |
关键词 | Ionic Liquids Molecular Dynamics Simulations Electrode-liquid Interfaces Supercapacitor |
ISSN号 | 1610-2940 |
DOI | 10.1007/s00894-020-04644-6 |
英文摘要 | Understanding the structure and properties at the electrolyte-electrode interface is vital for the rational design of the supercapacitors or other electrochemical devices. In this work, we explored the influence of interlayer spacing of the MoS2 electrode on the interfacial structure and electrical properties of sodium-ionic liquids (ILs) electrolytes via performing the all-atom molecular dynamics simulations. From the number density, charge density, and electrical potential distribution near the surface, the Mo- and S-terminal edges possess positive and negative features when the interlayer spacing is less than 8.5 angstrom. Meanwhile, the strength of the first density layer of ILs increases with the increase of the interlayer spacing of MoS2 for both Mo- and S- terminal surfaces in the neutral or charging state. Furthermore, the coordination number of sodium ion at the electrode surface was analyzed, and it was shown that the S-terminal surface has a larger coordination number than that on the Mo-terminal surface. Interestingly, the coordination number of MoS2 with the interlayer spacing of 8.0 angstrom is the lowest in the ranges of 6.5 similar to 8.5 angstrom. The electrolyte's charge screening factor also reflects the opposite electrical state of Mo- and S-terminal surfaces and weakens with increasing the interlayer spacing and surface charge density. The obtained understanding of ILs at electrode interfaces with different layer spacings in this work will provide insight into the molecular mechanisms of ILs-based sodium supercapacitors or other electrochemical devices in critical chemical engineering processes. |
资助项目 | National Natural Science Foundation of China[21922813] ; National Natural Science Foundation of China[22078322] ; National Natural Science Foundation of China[21808220] ; National Natural Science Foundation of China[21878302] ; National Natural Science Foundation of China[21776278] |
WOS研究方向 | Biochemistry & Molecular Biology ; Biophysics ; Chemistry ; Computer Science |
语种 | 英语 |
出版者 | SPRINGER |
WOS记录号 | WOS:000612029600001 |
资助机构 | National Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/43254] |
专题 | 中国科学院过程工程研究所 |
通讯作者 | Wang, Sufan; He, Hongyan |
作者单位 | 1.Anhui Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Mol Solids, Minist Educ,Anhui Lab Mol Based Mat, Wuhu 241000, Peoples R China 2.China Jiliang Univ, Coll Qual & Safety Engn, Xueyuan St 258,Xiasha Univ Pk, Hangzhou 310018, Zhejiang, Peoples R China 3.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, CAS Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Meichen,Wang, Yanlei,Li, Minjie,et al. Atomic structure and electrical property of ionic liquids at the MoS2 electrode with varying interlayer spacing[J]. JOURNAL OF MOLECULAR MODELING,2021,27(2):10. |
APA | Wang, Meichen,Wang, Yanlei,Li, Minjie,Wang, Sufan,&He, Hongyan.(2021).Atomic structure and electrical property of ionic liquids at the MoS2 electrode with varying interlayer spacing.JOURNAL OF MOLECULAR MODELING,27(2),10. |
MLA | Wang, Meichen,et al."Atomic structure and electrical property of ionic liquids at the MoS2 electrode with varying interlayer spacing".JOURNAL OF MOLECULAR MODELING 27.2(2021):10. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论