Preparation and characteristics of nanostructured MnO2/MWCNTs using microwave irradiation method |
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Authors: | Zhuangjun Fan Zhongwei Qie Tong Wei Jun Yan Shanshan Wang |
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Affiliation: | Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, School of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001, China |
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Abstract: | Ball-nanostructured MnO2/MWCNTs composite was successfully prepared by microwave irradiation. The surface morphology and structures of the composite were examined by scanning electron microscope and X-ray diffraction. Multi-walled carbon nanotubes play a role as sustainment to inhibit MnO2 nanoplates from collapsing into nanorods. The electrochemical studies indicated that the composite had ideal capacitive performance and high specific capacitances of 298 F g− 1, 213 F g− 1 and 198 F g− 1 at the current density of 2 mA·cm− 2, 10 mA·cm− 2 and 20 mA·cm− 2, respectively. The formation mechanism of nanostructured MnO2/MWCNTs and the electrochemical behaviour of composites were discussed in detail. |
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Keywords: | Carbon nanotubes Nanocomposites Electrochemical capacitor Microstructure |
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