Facile synthesis of Mn3O4/reduced graphene oxide nanocomposites with enhanced capacitive performance

In this study, a facile refluxing approach has been developed to load Mn 3 O 4 nanocrystals onto reduced graphene oxide (RGO) sheets. The microstructure and morphology of the resulting Mn 3 O 4 /RGO nanocomposites were systematically investigated by X-ray diffraction (XRD), Raman spectroscopy and transmission electron microscopy (TEM). The results reveal that Mn 3 O 4 nanocrystals with particle size of several nanometers were uniformly dispersed on the surface of RGO sheets. The electrochemical properties of the resulting Mn 3 O 4 /RGO nanocomposites were investigated by using them as electrode materials for a supercapacitor . It is found that the Mn 3 O 4 /RGO nanocomposites exhibit enhanced specific capacitance and long-term stability. The enhanced capacitive performance can be attributed to the synergistic effect among Mn 3 O 4 and RGO. The facile synthesis and the enhanced capacitive performance demonstrate the promising application of the Mn 3 O 4 /RGO nanocomposites as supercapacitor electrode materials.