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

Hao Jiang; Ting Zhao; Chaoyi Yan; Jan Ma; Chunzhong Li

doi:10.1039/C0NR00257G

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

Hao Jiang,^a^b Ting Zhao,^b Chaoyi Yan,^b Jan Ma*^a^b and Chunzhong Li^c

Author affiliations

* Corresponding authors

^a Temasek Laboratories, Nanyang Technological University, Singapore, Singapore
E-mail: asjma@ntu.edu.sg

^b School of Materials Sience and Engineering, Nanyang Technological University, Singapore, Singapore

^c Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai, People's Republic of China

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.

Supplementary files

Publication details

The article was received on 14 Apr 2010, accepted on 17 Jun 2010 and first published on 10 Aug 2010

Article type: Paper

DOI: 10.1039/C0NR00257G

Citation: Nanoscale, 2010,2, 2195-2198

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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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Nanoscale

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

Abstract

Supplementary files

Publication details

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

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