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以氨基化的碳纳米管为基体,通过低温原位聚合的方法将聚苯胺共价接枝于碳纳米管表面,通过透射电镜(TEM)、X射线衍射(XRD)、紫外可见光(UV-vis)、傅里叶红外(FT-IR)、拉曼(Raman)及电化学方法对复合材料进行了表征.结果表明通过低温原位聚合的方法可以使聚苯胺均匀接枝于碳纳米管表面.电化学测试结果表明,碳纳米管共价接枝聚苯胺作为超级电容器材料在0.5 A/g条件下聚苯胺的电容贡献值为754.8 F/g,同时其倍率性能以及循环稳定性方面都明显优于聚苯胺非共价修饰的碳纳米管复合材料.
The polyaniline was covalently grafted on the surface of carbon nanotubes by means of in situ polymerization at low temperature. The structure of the nanotubes was characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis ), Fourier transform infrared (FT-IR), Raman and electrochemical methods were used to characterize the composites.The results showed that PANI could be uniformly grafted onto the surface of carbon nanotubes by low temperature in situ polymerization. The results of electrochemical tests show that the polyaniline covalently grafted with carbon nanotubes as a supercapacitor material has a capacitance contribution of 754.8 F / g at 0.5 A / g, and at the same time its rate performance and cycling stability are obviously superior Non-covalent modification of polyaniline carbon nanotube composites.