Electrochemical Properties of 1,3-Dimethylimidazolium Dicyanamide, Bis(trifluoromethanesulfonyl)imide and Dimethylphosphate Ionic Liquids
文献类型：期刊论文
| 作者 | Zheng, Yong2; Zheng, Yongjun2; Wang, Qian1; Lv, Huichao2; Wang, Zhen2 |
| 刊名 | INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 16期号:11页码:12 |
| 关键词 | 1,3-dimethylimidazolium ionic liquid electrical conductivity electrochemical window differential capacitance |
| ISSN号 | 1452-3981 |
| DOI | 10.20964/2021.11.43 |
| 英文摘要 | 1,3-dimethylimidazolium-based ionic liquids show promise as electrolytes because of their special cation structure. However, their electrochemical properties remain less understood. Thus, 1,3-dimethylimidazolium dicyanamide, bis(trifluoromethanesulfonyl)imide and dimethylphosphate were chosen as representative 1,3-dimethylimidazolium-based ionic liquids in this work. The electrical conductivity and molar conductivity of these ionic liquids were measured and calculated from 303.15 to 353.15 K, which were well fitted with empirical equations. Meanwhile, the corresponding electrochemical window and differential capacitance were also obtained by cyclic voltammetry and impedance measurements, respectively. On the basis of experimental data and theoretical calculations, the relationships between the electrochemical properties and molecular structures of the ionic liquids were assessed in detail. These ionic liquids have higher electrical conductivity and wider electrochemical windows than many other 1-alkyl-3-methylimidaozlium-based ionic liquids with the same anions. These phenomena are probably ascribed to the higher structural symmetry, stronger cation-anion interaction and smaller size of the 1,3-dimethylimidazolium cation. Moreover, 1,3-dimethylimidazolium dicyanamide has a higher dissociation of ions, while 1,3-dimethylimidazolium bis(trifluoromethanesulfonyl)imide and dimethylphosphate have a lower ionic dissociation. 1,3-dimethylimidazolium cations are prone to be adsorbed onto the Pt plate electrodes when the cation-anion interaction is lower. It is hoped that the present work will provide important electrochemical research results for the future application of these ionic liquids. |
| WOS关键词 | ELECTRIC DOUBLE-LAYER ; PHYSICOCHEMICAL PROPERTIES ; DIFFERENTIAL CAPACITANCE ; ELECTRODEPOSITION ; ELECTROLYTES ; MIXTURES ; DENSITY ; AIR |
| 资助项目 | National Natural Science Foundation of China[21406002] ; National Natural Science Foundation of China[21702005] ; Key Scientific Research Projects of Colleges in Henan Province[20B530001] ; Scientific Research Foundation of Anyang Institute of Technology[YPY2020005] |
| WOS研究方向 | Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000718325900010 |
| 出版者 | ESG |
| 资助机构 | National Natural Science Foundation of China ; Key Scientific Research Projects of Colleges in Henan Province ; Scientific Research Foundation of Anyang Institute of Technology |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/51057]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zheng, Yong |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Anyang Inst Technol, Coll Chem & Environm Engn, Anyang 455000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Yong,Zheng, Yongjun,Wang, Qian,et al. Electrochemical Properties of 1,3-Dimethylimidazolium Dicyanamide, Bis(trifluoromethanesulfonyl)imide and Dimethylphosphate Ionic Liquids[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2021,16(11):12. |
| APA | Zheng, Yong,Zheng, Yongjun,Wang, Qian,Lv, Huichao,&Wang, Zhen.(2021).Electrochemical Properties of 1,3-Dimethylimidazolium Dicyanamide, Bis(trifluoromethanesulfonyl)imide and Dimethylphosphate Ionic Liquids.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,16(11),12. |
| MLA | Zheng, Yong,et al."Electrochemical Properties of 1,3-Dimethylimidazolium Dicyanamide, Bis(trifluoromethanesulfonyl)imide and Dimethylphosphate Ionic Liquids".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 16.11(2021):12. |
入库方式： OAI收割
来源：过程工程研究所
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