Supercapacitive Properties of Hydrothermally Synthesized γ-MnOOH Nanowires

Da Zhang Zhu; Cheng Jiang; Dong Mei Sun

doi:10.4028/www.scientific.net/AMR.634-638.2638

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 634-638Supercapacitive Properties of Hydrothermally...

Supercapacitive Properties of Hydrothermally Synthesized γ-MnOOH Nanowires

Abstract:

γ-MnOOH nanowires have been synthesized via a simple hydrothermal process without any template at relatively low temperature. The as-obtained sample was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical properties of the γ-MnOOH nanowires were investigated by cyclic voltammetry and galvanostatic charge-discharge methods. And a high specific capacitance calculated from the galvanostatic discharge curve was 191 F•g^-1 at the current density of 0.1 A•g^-1, which remain a good specific capacitance of 143 F•g^-1 at the current density of 1.0 A•g^-1. The electrochemical analysis results demonstrate that γ-MnOOH nanowires should be a good candidate as electrode material for supercapacitor.

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Periodical:

Advanced Materials Research (Volumes 634-638)

Pages:

2638-2642

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.2638

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Online since:

January 2013

Authors:

Da Zhang Zhu, Cheng Jiang, Dong Mei Sun

Keywords:

Hydrothermal, Low-Temperature, Supercapacitive, γ-MnOOH

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