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Ionic Liquid-Based Electrolytes for Supercapacitor and Supercapattery

Yu, Linpo; Chen, George Z.


Linpo Yu


There is a strong desire to replace or complement aqueous and organic electrolytes by ionic liquids (ILs) in electrochemical energy storage (EES) devices to achieve high operating voltages and hence high energy capacity. ILs are regarded as the inherent and competitive electrolytes since they were introduced to the electrochemical research community because they can overcome many disadvantages of the conventional aqueous and organic electrolytes, such as narrow potential windows, volatility, and flammability. This paper reviews critically the recent literatures of IL-based electrolytes used in supercapacitor, supercapattery, and micro-supercapacitor. Supercapattery is a generic term for various hybrid devices combining the merits of rechargeable battery and supercapacitor and often shows capacitive behavior. Fundamentals of supercapattery are briefly explained with typical examples. Micro-supercapacitor falls in the same scope of supercapacitor and supercapattery and shares the same fundamental concerns besides topology or structure. The future of IL-based electrolytes for the capacitive EES devices are also prospected.


Yu, L., & Chen, G. Z. (2019). Ionic Liquid-Based Electrolytes for Supercapacitor and Supercapattery. Frontiers in Chemistry, 7,

Journal Article Type Article
Acceptance Date Apr 2, 2019
Online Publication Date Apr 18, 2019
Publication Date Apr 18, 2019
Deposit Date Apr 26, 2019
Publicly Available Date Apr 26, 2019
Journal Frontiers in Chemistry
Electronic ISSN 2296-2646
Publisher Frontiers Media
Peer Reviewed Peer Reviewed
Volume 7
Keywords supercapacitor; supercapattery; micro-supercapacitor; ionic liquids; electrolytes; interfaces
Public URL
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