Fabrication of Graphene Oxide Supercapacitor Devices

Down, Michael, Rowley-Neale, SJ, Smith, GC and Banks, Craig (2018) Fabrication of Graphene Oxide Supercapacitor Devices. ACS Applied Energy Materials, 1 (2). pp. 707-714. ISSN 2574-0962

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Official URL: https://pubs.acs.org/doi/abs/10.1021/acsaem.7b0016...

Abstract

The fabrication, characterization, and energy storage capacity of a graphene-oxide (GO)-based supercapacitor device is reported. This device is fabricated via a facile screen-printing technique, providing a highly reproducible and flexible symmetrical supercapacitor device. The capacitive properties of these GO devices are investigated in both aqueous electrolytes and room temperature ionic liquids. The GO devices are shown to improve the capacitive performance from 0.82 F g−1 displayed by a graphitic screen, to a competitive 423 F g−1, representing a ca. 500-fold increase. The GO supercapacitor device also exhibits an impressive power handling capability of up to 13.9 kW kg−1 and an energy density of 11.6 Wh kg−1. This work demonstrates that GO, before it has been reduced to graphene, is a high performance supercapacitor material of its own right.

Item Type:	Article
Peer-reviewed:	Yes
Date Deposited:	27 Jul 2018 07:59
Publisher:	ACS
Additional Information:	This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Energy Materials, copyright © American Chemical Society and the Division of Chemical Education, Inc., after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/abs/10.1021%2Facsaem.7b00164.
Divisions:	Faculties > Science and Engineering
URI:	https://e-space.mmu.ac.uk/id/eprint/621273
DOI:	https://doi.org/10.1021/acsaem.7b00164
ISSN	2574-0962

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