One-step electrochemical approach to the synthesis of Graphene/MnO2 nanowall hybrids
Graphene, manganese dioxide, nanocomposites, electrochemical reduction
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.
Tsinghua University Press
Chengzhou Zhu,Shaojun Guo,Youxing Fang,Lei Han,Erkang Wang,Shaojun Dong, One-step electrochemical approach to the synthesis of Graphene/MnO2 nanowall hybrids. NanoRes.2011, 4(7): 648–657