Oligomeric Ionic Liquids: Bulk, Interface and Electrochemical Application in Energy Storage

Authors

Dan-Dan Li, 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China;2. Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China;
Xiang-Yu Ji, 3. State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China;
Ming Chen, 3. State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China;
Yan-Ru Yang, 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China;2. Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China;
Xiao-Dong Wang, 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China;2. Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China;Follow
Guang Feng, 3. State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China;Follow

Corresponding Author

Xiao-Dong Wang(wangxd99@gmail.com);
Guang Feng(gfeng@hust.edu.cn)

Abstract

Over recent years, oligomer ionic liquids (OILs), a novel class of ionic liquids, are becoming preferential electrolytes for high-performance energy-storage devices, such as supercapacitors with enhanced energy density and non-flammable lithium-ion batteries (LIBs). Herein, structures, properties, and their associations of the up-to-the-minute formulated OILs are systematically summarized and elaborately interpreted, especially for dicationic ionic liquids and tricationic ionic liquids. The physicochemical and electrochemical properties of OIL-based electrolytes are presented and analyzed, which are vitally important for supercapacitors and LIBs. Subsequently, the applications of OILs as electrolytes for supercapacitors and LIBs are summarized, with the comparisons of the energy-storage mechanisms and performance between OILs and MILs electrolytes in supercapacitors. Meanwhile, the optimization of the dynamic performance of OILs electrolytes is provided. Finally, the main difficulties and probable perspectives of OIL-based electrolytes are presented for future work. This review would contribute to a deep understanding of OILs and design optimized OIL-based electrolytes for energy storage systems.

Graphical Abstract

Keywords

oligomer ionic liquids, properties and structures, supercapacitors, lithium-ion batteries

DOI Link

https://doi.org/10.13208/j.electrochem.2219002

Publication Date

2022-11-28

Online Available Date

2022-11-14

Revised Date

2022-11-12

Received Date

2022-08-26

Recommended Citation

Dan-Dan Li, Xiang-Yu Ji, Ming Chen, Yan-Ru Yang, Xiao-Dong Wang, Guang Feng. Oligomeric Ionic Liquids: Bulk, Interface and Electrochemical Application in Energy Storage[J]. Journal of Electrochemistry, 2022 , 28(11): 2219002.
DOI: 10.13208/j.electrochem.2219002
Available at: https://jelectrochem.xmu.edu.cn/journal/vol28/iss11/7