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Issue 17, 2014
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Graphene-based three-dimensional hierarchical sandwich-type architecture for high performance supercapacitors

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Abstract

A facile two-step method is developed for large-scale preparation of graphene-based three-dimensional hierarchical sandwich-type architecture (graphene/carbon nanotubes (CNTs)/Mn2O3) for high performance supercapacitor. The synthesis involves a chemical vapor deposition (CVD) method to fabricate sponge-like three-dimensional (3D) graphene/CNTs and an electrodeposition process to deposit Mn2O3 nano-sheets on the surface of 3D graphene/CNTs. With the novel sandwich-type composite as an electrode, the measurements indicate the synergy effects of Mn2O3 and 3D carbonous materials make the electrode present a high specific capacitance. The composite electrode also presents a high reversible capacity, excellent cycle performance and rate capability. It could be concluded that the composite of Mn2O3 with 3D graphene/CNTs displays excellent synergy effects of transition-metal oxide and carbonous materials. This work also inspires in-depth research for the application of 3D graphene-based composites for high performance supercapacitors.

Graphical abstract: Graphene-based three-dimensional hierarchical sandwich-type architecture for high performance supercapacitors

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Publication details

The article was received on 29 Oct 2013, accepted on 13 Jan 2014 and first published on 14 Jan 2014


Article type: Paper
DOI: 10.1039/C3RA46195E
Citation: RSC Adv., 2014,4, 8466-8471
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    Graphene-based three-dimensional hierarchical sandwich-type architecture for high performance supercapacitors

    Y. Zhang, M. Ma, J. Yang, W. Huang and X. Dong, RSC Adv., 2014, 4, 8466
    DOI: 10.1039/C3RA46195E

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