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Issue 3, 2016
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Morphology-controlled MnO2–graphene oxide–diatomaceous earth 3-dimensional (3D) composites for high-performance supercapacitors

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Abstract

3-Dimensional (3D) composites based on a unique combination of MnO2-nanostructures, graphene oxide nanosheets and porous Diatomaceous Earth (DE) microparticles (GO–DE@MnO2) were synthesized and explored for application in high-performance supercapacitors. To explore the influence of the structural properties of MnO2 nanostructures on supercapacitor performances, several MnO2 structures with nanosheet and nanowire morphologies were synthesized and characterized. The prepared GO–DE@MnO2 composites with MnO2 nanosheets due to their higher conductivity and higher surface area showed a larger specific capacitance of 152.5 F g−1 and a relatively better cycle stability (83.3% capacitance retention after 2000 cycles at a scan rate of 2 A g−1), indicating great potential for application in supercapacitors.

Graphical abstract: Morphology-controlled MnO2–graphene oxide–diatomaceous earth 3-dimensional (3D) composites for high-performance supercapacitors

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Supplementary files

Article information


Submitted
18 Oct 2015
Accepted
20 Nov 2015
First published
24 Nov 2015

Dalton Trans., 2016,45, 936-942
Article type
Paper
Author version available

Morphology-controlled MnO2–graphene oxide–diatomaceous earth 3-dimensional (3D) composites for high-performance supercapacitors

Z. Q. Wen, M. Li, F. Li, S. J. Zhu, X. Y. Liu, Y. X. Zhang, T. Kumeria, D. Losic, Y. Gao, W. Zhang and S. X. He, Dalton Trans., 2016, 45, 936
DOI: 10.1039/C5DT04082E

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