In situ electrochemical polymerization of a nanorod-PANI-Graphene composite in a reverse micelle electrolyte and its application in a supercapacitor

Liwen Hu, Jiguo Tu, Shuqiang Jiao, Jungang Hou, Hongmin Zhu, Derek J. Fray

Research output: Contribution to journalArticlepeer-review

65 Citations (Scopus)

Abstract

Highly porous nanorod-PANI-Graphene composite films were prepared by in situ electrochemical polymerization onto an ITO substrate in a reverse micelle electrolyte. The morphology and microstructure of the composite films were analyzed by using a field emission scanning electron microscope. It was observed that the films were highly porous and the nanorod PANI films were inserted by graphene nanosheets. This indicated that a good conductive network between PANI nanorods and graphene sheets was formed. Further electrochemical tests involved cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) in 1 mol L-1 HClO 4 solution. The results showed that the composite film had a favorable capacitance with a high electron transfer rate and low resistance. The highest specific capacitance that could be achieved was as high as 878.57 F g-1 with the charge loading of 500 mC at a current density of 1 A g-1. The GCD at different charge loadings showed good cycle stability with a low fading rate of specific capacitance after 1000 cycles. The results demonstrated that the nanorod-PANI-Graphene composite was proved to be of great potential as an electrode material for supercapacitors.

Original languageEnglish
Pages (from-to)15652-15656
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume14
Issue number45
DOIs
Publication statusPublished - 2012 Dec 5
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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