Issue 10, 2019

Electrolyte selection for supercapacitive devices: a critical review

Abstract

Electrolytes are one of the vital constituents of electrochemical energy storage devices and their physical and chemical properties play an important role in these devices' performance, including capacity, power density, rate performance, cyclability and safety. This article reviews the current state of understanding of the electrode–electrolyte interaction in supercapacitors and battery–supercapacitor hybrid devices. The article discusses factors that affect the overall performance of the devices such as the ionic conductivity, mobility, diffusion coefficient, radius of bare and hydrated spheres, ion solvation, viscosity, dielectric constant, electrochemical stability, thermal stability and dispersion interaction. The requirements needed to design better electrolytes and the challenges that still need to be addressed for building better supercapacitive devices for the competitive energy storage market have also been highlighted.

Graphical abstract: Electrolyte selection for supercapacitive devices: a critical review

Article information

Article type
Review Article
Submitted
14 Jūn. 2019
Accepted
20 Aug. 2019
First published
27 Aug. 2019
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2019,1, 3807-3835

Electrolyte selection for supercapacitive devices: a critical review

B. Pal, S. Yang, S. Ramesh, V. Thangadurai and R. Jose, Nanoscale Adv., 2019, 1, 3807 DOI: 10.1039/C9NA00374F

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