| Summary: | 碩士 === 國立中正大學 === 化學工程研究所 === 104 === This research aims to synthesize the manganese dioxide (MnO2) nanowires, which has been widely used as the energy storge materials, as the supercapacitor.
Polyol process was conducted to the synthesis of the MnO2 nanowires with the KMnO4, PEG200 and carbon nanomaterials at 100 oC for a period of time. The result shows that MnO2 nanowires with a mean diameter of 7–20 nm can be obtained. Characterization of the materials was carried out by SEM, TGA, TEM, XRD, XPS and Raman.
The electrochemical performance of the MnO2 nanowires was investigated by cyclic voltammetry(CV), galvanostatic charge-discharge
(GCD) and EIS. The results show that a maximum capacitance of 304.66 F/g can be achieved with a scan rate 2 mV/s and retention is about 70 % after 5000 cycles.
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