Self-assembling sulfonated graphene/polyaniline nanocomposite paper for high performance supercapacitor

Tianju Fan, Songzhao Tong, Wenjin Zeng, Qiaoli Niu, Yidong Liu, Chi Yu Kao, Jieyu Liu, Wei Huang, Yong Min, Arthur J. Epstein

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

We reported a low cost and high efficient method to fabricate free-standing sulfonated graphene/polyaniline (SG/PANI) nanocomposite papers. The nanocomposite paper had layered structure, and polyaniline (PANI) was uniformly intercalated into the sulfonated graphene layers. The nanostructured PANI was coated on the surface of individual SG sheets. It was found that the sulfonated graphene actually acted as dopants to dope with the PANI. The SG/PANI nanocomposite papers had thin, lightweight, and flexible characters and its supercapacitor devices displayed excellent electrochemical performance in terms of ratio capacitance and good cycling stability. Its ratio capacitance reached 478 F/g at a discharge rate of 0.5 A/g and its capacitance retention rate maintained 88% of its original capacitance after 2000 cycles.

Original languageEnglish
Pages (from-to)79-86
Number of pages8
JournalSynthetic Metals
Volume199
DOIs
StatePublished - Jan 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.

Keywords

  • Graphene/PANI
  • Polyaniline (PANI)
  • Sulfonated graphene (SG)
  • Sulfonated graphene/PANI (SG/PANI)
  • Supercapacitors

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