Chinese Journal of Applied Chemistry ›› 2019, Vol. 36 ›› Issue (12): 1422-1429.DOI: 10.11944/j.issn.1000-0518.2019.12.190272

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Preparation and Electrochemical Performance of Praphene/Polypyrrole Nanofiber Composite as Supercapacitor Electrode Materials

XIE Chaoa,HONG Guohuia,ZHAO Linaa,YANG Weiqiangb,Wang jikua*   

  1. aCollege of Chemistry,Jilin Normal University,Siping,Jilin 136000,China
    bCollege of Physics,Northeast Normal University,Changchun 130000,China
  • Received:2019-10-14 Accepted:2019-10-22 Published:2019-12-01 Online:2019-12-10
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51404108)

Abstract:

Because of its high cyclic stability and good energy density, supercapacitor has become a research hotspot in energy storage devices. Electrode materials are the key factors to determine the electrochemical performance of supercapacitors. In this paper, Using poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer (P123) as a soft template, graphene/polypyrrole nanofiber (GR/PPy NF) composite supercapacitor electrode materials were successfully prepared by one-step in situ chemical oxidation polymerization. The structure and morphology of composite materials were systematically characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM) and Fourier transform infrared spectrometer (FT-IR). The electrochemical properties of GR/PPy NF composite electrode materials were systematically analyzed by electrochemical methods. The results reveal that at the current density of 0.5 A/g, the nanocomposite has a maximum capacitance of 969.5 F/g, and can retain 88% of the initial capacitance after 600 cycles of charge and discharge, showing good cyclic stability and excellent electrochemical performance for the electrode materials of supercapacitor. The facile preparation and excellent performance of the GR/PPy NF make it a promising material for energy conversion/storage application.

Key words: graphene, polypyrrole, supercapacitor