One-step electrochemical approach to the synthesis of Graphene/MnO2 nanowall hybrids |
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Authors: | Chengzhou Zhu Shaojun Guo Youxing Fang Lei Han Erkang Wang Shaojun Dong |
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Affiliation: | (1) Center of Special Materials and Technology, Fudan University, Shanghai, 200433, China; |
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Abstract: | We have demonstrated a one-step and effective electrochemical method to synthesize graphene/MnO2 nanowall hybrids (GMHs). Graphene oxide (GO) was electrochemically reduced to graphene (GN), accompanied by the simultaneous
formation of MnO2 with a nanowall morphology via cathodic electrochemical deposition. The morphology and structure of the GMHs were systematically
characterized by scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and
Raman spectroscopy. The resulting GMHs combine the advantages of GN and the nanowall array morphology of MnO2 in providing a conductive network of amorphous nanocomposite, which shows good electrochemical capacitive behavior. This
simple approach should find practical applications in the large-scale production of GMHs.
![MediaObjects/12274_2011_120_Fig1_HTML.gif](/content/L664T2G50262N62W/MediaObjects/12274_2011_120_Fig1_HTML.gif) |
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Keywords: | Graphene manganese dioxide nanocomposites electrochemical reduction |
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