Nanocomposite Prepared from In Situ Grafting of Polypyrrole to Aminobenzoyl-Functionalized Multiwalled Carbon Nanotube and Its Electrochemical Properties

Abstract

We reported the functionalization of multiwalled carbon nanotube (MWCNT) with 4-aminobenzoic acid by a "direct" Friedel-Crafts acylation reaction in a mild polyphosphoric acid (PPA)/phosphorous pentoxide (P2O5) medium. The resulting 4- aminobenzoyl-functionalized MWCNT (AF-MWCNT) was used as a platform for the grafting of polypyrrole (PPy) in ammonium persulfate (APS)/aqueous hydrochloric acid solution to produce PPy-grafted MWCNT (PPy-g-MWCNT) composite. After dedoping with alkaline treatment, PPy-g-MWCNT displayed 20 times higher electrical conductivity than that of PPy. The current density and cycle stability of PPy-g-MWCNT composite were also remarkably improved compared with those of PPy homopolymer, suggesting that an efficient electron transfer between PPy and MWCNT was possible through covalent links. In addition, PPy-g-MWCNT displayed high electrocatalytic activity for oxygen reduction reaction (ORR).

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2011
Accession Number
ADA571110

Entities

People

  • Hyun-jung Choi
  • In-yup Jeon
  • Jong-Beom Baek
  • Loon-Seng Tan

Organizations

  • Ulsan National Institute of Science and Technology

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Advanced Materials
  • Air Force
  • Carbon Nanotubes
  • Chemical Synthesis
  • Chemistry
  • Composite Materials
  • Conductive Polymers
  • Current Density
  • Electrical Conductivity
  • Fullerenes
  • Graphene
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Nanocomposites
  • Oxidation Reduction Reactions
  • Polymer Chemistry

Fields of Study

  • Materials science

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Nanocomposite Materials Science
  • Polymer Science and Technology

Technology Areas

  • Microelectronics