Enhanced electrochemical capacitance of polyaniline/graphene hybrid nanosheets with graphene as templates

Fei Peng Du, Jing Jing Wang, Chak Yin Tang, Chi Pong Tsui, Xiao Lin Xie, Ka Fu Yung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

40 Citations (Scopus)

Abstract

Polyaniline/graphene nanocomposites (PANi/GR) were prepared via PANi covalent grafting from the surface of GR. The unique structure of hybrid nanosheets was formed with uniform PANi layer coating GR without phase separation appearing when the weight ratio of aniline-to-graphene was 1:1. The unique PANi/GR hybrid nanosheets as electrode material for supercapacitors have a specific capacitance as high as 922 F/g at 10 mV/s and still retain a specific capacitance of 106 F/g at a high scan rate of 1 V/s due to synergistic effect between PANi and GR. The capacitance retention was ∼90% after 1000 cycles, which is much better than that of pure PANi or other PANi nanocomposites. The enhanced capacitive performance of PANi/GR hybrid nanosheets makes them have potential application in developing high performance energy storage devices.
Original languageEnglish
Pages (from-to)376-381
Number of pages6
JournalComposites Part B: Engineering
Volume53
DOIs
Publication statusPublished - 8 Jul 2013

Keywords

  • A. Nano-structures
  • B. Electrical properties
  • B. Microstructures
  • D. Chemical analysis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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