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Issue 10, 2010
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Hydrothermal synthesis of novel Mn3O4 nano-octahedrons with enhanced supercapacitors performances

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Abstract

Uniform and single-crystalline Mn3O4 nano-octahedrons have been successfully synthesized by a simple ethylenediaminetetraacetic acid disodium salt (EDTA-2Na) assisted hydrothermal route. The octahedron structures exhibit a high geometric symmetry with smooth surfaces and the mean side length of square base of octahedrons is ∼160 nm. The structure is reckoned to provide superior functional properties and the nano-size achieved in the present work is noted to further facilitate the material property enhancement. The formation process was proposed to begin with a “dissolution–recrystallization” which is followed by an “Ostwald ripening” mechanism. The Mn3O4 nano-octahedrons exhibited an enhanced specific capacitance of 322 F g−1 compared with the truncated octahedrons with specific capacitances of 244 F g−1, making them a promising electrode material for supercapacitors.

Graphical abstract: Hydrothermal synthesis of novel Mn3O4 nano-octahedrons with enhanced supercapacitors performances

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Article information


Submitted
14 Apr 2010
Accepted
17 Jun 2010
First published
10 Aug 2010

Nanoscale, 2010,2, 2195-2198
Article type
Paper

Hydrothermal synthesis of novel Mn3O4 nano-octahedrons with enhanced supercapacitors performances

H. Jiang, T. Zhao, C. Yan, J. Ma and C. Li, Nanoscale, 2010, 2, 2195
DOI: 10.1039/C0NR00257G

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