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Graphene Sheet/Porous NiO Hybrid Film for Supercapacitor Applications

Graphene Sheet/Porous NiO Hybrid Film for Supercapacitor Applications We report the preparation of a nickel‐foam‐supported graphene sheet/porous NiO hybrid film by the combination of electrophoretic deposition and chemical‐bath deposition. The obtained graphene‐sheet film of about 19 layers was used as the nanoscale substrate for the formation of a highly porous NiO film made up of interconnected NiO flakes with a thickness of 10–20 nm. The graphene sheet/porous NiO hybrid film exhibits excellent pseudocapacitive behavior with pseudocapacitances of 400 and 324 F g−1 at 2 and 40 A g−1, respectively, which is higher than those of the porous NiO film (279 and 188 F g−1 at 2 and 40 A g−1). The enhancement of the pseudocapacitive properties is due to reinforcement of the electrochemical activity of the graphene‐sheet film. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chemistry - A European Journal Wiley

Graphene Sheet/Porous NiO Hybrid Film for Supercapacitor Applications

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References (45)

Publisher
Wiley
Copyright
Copyright © 2011 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0947-6539
eISSN
1521-3765
DOI
10.1002/chem.201100727
pmid
21837714
Publisher site
See Article on Publisher Site

Abstract

We report the preparation of a nickel‐foam‐supported graphene sheet/porous NiO hybrid film by the combination of electrophoretic deposition and chemical‐bath deposition. The obtained graphene‐sheet film of about 19 layers was used as the nanoscale substrate for the formation of a highly porous NiO film made up of interconnected NiO flakes with a thickness of 10–20 nm. The graphene sheet/porous NiO hybrid film exhibits excellent pseudocapacitive behavior with pseudocapacitances of 400 and 324 F g−1 at 2 and 40 A g−1, respectively, which is higher than those of the porous NiO film (279 and 188 F g−1 at 2 and 40 A g−1). The enhancement of the pseudocapacitive properties is due to reinforcement of the electrochemical activity of the graphene‐sheet film.

Journal

Chemistry - A European JournalWiley

Published: Jul 19, 2012

Keywords: ; ; ; ;

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