Issue 2, 2020

A super-thermostable, flexible supercapacitor for ultralight and high performance devices

Abstract

The design and optimization of new composite electrolytes and nanostructured carbon electrodes constituting electrochemical energy storage devices such as supercapacitors are definitely important because of the increasing challenges of providing reliable electrical energy in harsh environments. Here, we develop super-thermostable, flexible, and high-performance supercapacitors operating at high temperatures and under mechanical stresses. The multifunctional supercapacitors are fabricated by integrating an ionic liquid-fumed silica nanoparticle composite polymer electrolyte and 3D graphene aerogel electrodes with controlled hybrid porous structures. The thermal and electrochemical stability of the composite polymer electrolyte and excellent compatibility between the electrolyte and the porous aerogel electrodes lead to high-performance supercapacitors with an extremely high specific capacitance of 1007 F g−1 and an energy density of 1134 W h kg−1 at a high temperature of 200 °C. In a flexibility test in dynamic mode, the device exhibits extreme long-term stability and mechanical durability after bending cycles even at high temperatures. This research provides a rational strategy for light weight, mechanically robust, high-performance, and high-temperature operation energy storage systems operating under harsh circumstances.

Graphical abstract: A super-thermostable, flexible supercapacitor for ultralight and high performance devices

Supplementary files

Article information

Article type
Communication
Submitted
12 okt 2019
Accepted
12 nov 2019
First published
12 nov 2019

J. Mater. Chem. A, 2020,8, 532-542

A super-thermostable, flexible supercapacitor for ultralight and high performance devices

D. W. Kim, S. M. Jung and H. Y. Jung, J. Mater. Chem. A, 2020, 8, 532 DOI: 10.1039/C9TA11275H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements