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Journal of Sol-Gel Science and Technology

Erschienen in:

01.07.2012 | Original Paper

Three-dimensional flower-like nickel oxide supported on graphene sheets as electrode material for supercapacitors

verfasst von: Chongyong Ge, Zhaohui Hou, Binhong He, Fanyan Zeng, Jianguo Cao, Yiming Liu, Yafei Kuang

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 1/2012

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Abstract

Dispersed three-dimensional (3D) flower-like nickel oxide on graphene sheets was synthesized by incorporating a facile hydrothermal process with a thermal treatment process. The possible growth mechanism of 3D flower-like NiO is discussed. When used as electrode materials for supercapacitors, the resultant composite exhibits a specific capacitance of 346F/g (1.5A/g), a good rate performance and cycle stability in 2 M KOH. NiO in the composite could provide a specific capacitance as high as 778.7F/g, compared to that of bare NiO of only 220F/g. The functional features of unique 3D flower-like NiO morphology, high conductivity of graphene sheets and its protective effect to the structure of NiO result in an improved electrochemical performance.

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Titel: Three-dimensional flower-like nickel oxide supported on graphene sheets as electrode material for supercapacitors
verfasst von: Chongyong Ge
Zhaohui Hou
Binhong He
Fanyan Zeng
Jianguo Cao
Yiming Liu
Yafei Kuang
Publikationsdatum: 01.07.2012
Verlag: Springer US
Erschienen in: Journal of Sol-Gel Science and Technology / Ausgabe 1/2012
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI: https://doi.org/10.1007/s10971-012-2778-7

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