在聚苯胺(PANI)和二氧化锰(MnO2)存在的条件下,以FeCl3/甲基橙为模板,通过化学氧化法聚合吡咯(Py)单体,制备MnO2/PPy/PANI纳米管复合材料。利用X射线衍射、透射电子显微镜、红外光谱和电化学测试等多种测试技术对复合材料进行物性表征和电化学电容性能测试,并讨论了不同含量的PANI对复合物材料的结构和性能的影响。结果表明,由于PANI、MnO2与PPy三者的相互协同作用,以及材料管状结构的大比表面积,使三元复合材料具有比二元复合材料要大的电化学活性。所合成的三元复合材料最大比容量达到458.4F/g。
One-dimensional nanotubular MnO2/PPy/PANI ternary composites were prepared by in-situ chemical oxidative polymerization of pyrrole in the host of MnO2 and PANI, using methyl orange/FeCl3 as a reactive self-degraded soft-template. Their morphologies and microstructures were characterized by X-ray diffraction (XRD) analysis, infrared analysis, transmission electron microscopy ( TEM ). The electrochemical properties of the ternary composites for electrochemical capacitors were investigated by cyclic vohammogram (CV), galvanostatic charge/discharge tests. The results indicated that the ternary composites were characterized with greater specific capacitance than the binary composite of MnO2/PPy due to the synergy effect of PPy, PANI, and MnO2. Hollow tube-like structure of PPy with high surface area might enhance the specific capacitance. The materials had also given a good charge-discharge cycle performance and a maximum specific capacitance of 458.4 F/g was obtained.