ELECTROCHEMICAL PERFORMANCE OF DOPED MnO2 / GRAPHENE COMPOSITES
نویسندگان
چکیده
MnO2 materials are prepared through a hydrothermal process. Sn-doping and composite graphene are both achieved simultaneously during the hydrothermal reaction then obtain the electrode materials of supercapacitors. Morphology, structure and electrochemical properties of the samples are evaluated by X-ray diffraction(XRD), scanning electron microscopy (SEM), and electrochemical work station. The results show that, the specific capacitance of 49 F·g -1 , 283 F·g -1 and 312 F·g -1 are exhibited for the pure MnO2, SnMnO2 and Sn-MnO2 / graphene composite, respectively, indicating that stannum and graphene greatly enhances the electrochemical performance of MnO2.
منابع مشابه
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