Microwave Synthesis and Electrochemical Property of One Dimensional Nanostructured MnO2

Chem. J. Chinese Universities

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Microwave Synthesis and Electrochemical Property of One Dimensional Nanostructured MnO₂

ZHANG Wei-Xin^*, WANG Qiang, REN Xiang-Bin, YANG Ze-Heng, WANG Hua

School of Chemical Engineering, Key Laboratory of Controllable Chemistry Reaction & Material Chemical Engineering of Anhui Province, Hefei University of Technology, Hefei 230009, China

Received:2007-12-18 Revised:1900-01-01 Online:2008-10-10 Published:2008-10-10
Contact: ZHANG Wei-Xin

Abstract

Abstract: Based on the hydrothermally-synthesized nanostructured γ-MnOOH precursor and with K₂S₂O₈ as an oxidant, nanostructured α/β-MnO₂ samples were prepared by a singel-mode microwave-heating method. The samples were characterized by X-ray diffraction and Transmission Electron Microscopy. The results show that α-MnO₂ nanofibers were prepared when the γ-MnOOH nanofibers synthesized at 100 ℃ were used as the precursors, while β-MnO₂ nanorods were obtained with the γ-MnOOH nanorods synthesized at 150 ℃ as the precursors. The electrochemical performance of α/β-MnO₂ was also investigated by galvanostatic discharge test. When the as-prepared α-MnO₂ nanofiber and β-MnO₂ nanorod samples are used for Li/MnO₂ battery, the discharge capacities are 270.23 and 186.66 mA·h/g, respectively.

Key words: Nanostructure, Microwave-heating, MnO₂, Electrochemical property

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ZHANG Wei-Xin^*, WANG Qiang, REN Xiang-Bin, YANG Ze-Heng, WANG Hua. Microwave Synthesis and Electrochemical Property of One Dimensional Nanostructured MnO₂[J]. Chem. J. Chinese Universities, doi: .

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Microwave Synthesis and Electrochemical Property of One Dimensional Nanostructured MnO₂

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