Polyaniline/carbon nanotube composite materials prepared by soft template of double surfactants for supercapacitors
In this paper,PANI/CNTs composite materials were prepared by emulsion polymerization with sodi-um dodecyl benzene sulfonate(SDBS)and Tween-80(Tween-80)as soft templates,ammonium persulfate(APS)as oxidant,and carbon nanotubes(CNTs)mixed with appropriate amount.The composite materials were characterized by scanning electron microscopy(SEM),X-ray powder diffraction(XRD)and Fourier trans-form infrared spectroscopy(FT-IR).The results show that PANI/CNTs composites present core-shell struc-ture with fiber shape,and PANI materials cover the surface of CNTs uniformly.The electrochemical test results show that the specific capacitance of PANI/CNTs electrode is 478.48 F/g at the current density of 1.0 A/g.After 1 000 cycles,the specific capacitance retention rate of PANI/CNTs is 70.01％,while that of PANI prepared by tradi-tional method is only 49.10％.The specific capacitance of PANI/CNTs composites obtained by emulsion poly-merization is higher than that of PANI single material obtained by traditional method,and the cycle life is sig-nificantly improved.This method provides an important strategy for the preparation of electrode materials of high-performance supercapacitors.
万方数据
维普
