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采用两步法制备出均匀分散的SnO2/还原氧化石墨烯(SnO2/RGO)二元复合物,再以二元复合物为模板,通过化学氧化法聚合吡咯(Py)单体,制备出SnO2/还原氧化石墨烯/聚吡咯(SnO2/RGO/PPy)三元复合材料。利用红外光谱(FTIR)、X射线衍射(XRD)和场发射扫描电镜(FESEM)对复合材料结构和形貌进行物性表征,利用循环伏安、恒电流充放电和交流阻抗对复合材料进行电化学性能研究,并讨论了不同含量的PPy对复合材料的结构和性能的影响。结果表明,所合成的三元复合材料的比电容随PPy含量的增加而增大,最大达到305.3F/g。三元复合物电容性能增强源于SnO2、RGO与PPy三者的相互协同作用,以及材料层状结构和大的比表面积。
The SnO2 / RGO binary composites were prepared by a two-step method and the pyrrole (Py) monomer was synthesized by chemical oxidation using the binary complex as a template to prepare SnO2 / Reduction of graphene oxide / polypyrrole (SnO2 / RGO / PPy) ternary composites. The structure and morphology of the composites were characterized by FTIR, XRD and FESEM. The composites were characterized by cyclic voltammetry, constant current charge and discharge and AC impedance Performance studies, and discussed the impact of different content of PPy on the structure and properties of the composite. The results show that the specific capacitance of the synthesized ternary composites increases with the increase of PPy content up to 305.3F / g. Ternary composite capacitance performance derived from SnO2, RGO and PPy synergies between the three, as well as material lamellar structure and large specific surface area.