Preparation and characteristics of nanostructured MnO2/MWCNTs using microwave irradiation method
Preparation and characteristics of nanostructured MnO2/MWCNTs using microwave irradiation method
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DOI：
10.1016/j.matlet.2008.02.060
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发表时间：
2008-07
影响因子：
3
通讯作者：
Zhuangjun Fan;Zhongwei Qie;Tong Wei;Jun Yan;Shanshan Wang
中科院分区：
文献类型：
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作者：
Zhuangjun Fan;Zhongwei Qie;Tong Wei;Jun Yan;Shanshan Wang
采用微波辐射法成功制备了球形纳米MnO 2/MWCNTs复合材料。用扫描电镜和X射线衍射分析了复合材料的表面形貌和结构。多壁碳纳米管起到支撑作用，抑制MnO 2纳米片塌陷成纳米棒。电化学研究表明，该复合材料具有理想的电容性能，在电流密度为2 mA·cm-2、10 mA·cm-2和20 mA·cm-2时，其比容量分别为298 F g-1、213 F g-1和198 F g-1。详细讨论了纳米结构MnO 2/MWCNTs的形成机理及复合材料的电化学行为。
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 MnO2nanoplates 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−1and 198 F g−1at the current density of 2 mA·cm−2, 10 mA·cm−2and 20 mA·cm−2, respectively. The formation mechanism of nanostructured MnO2/MWCNTs and the electrochemical behaviour of composites were discussed in detail.