Transition of graphene oxide-coated fiber bundles from insulator to conductor by chemical reduction

Dong Han Ha, Suyong Jung, Ho Jong Kim, Daehee Kim, Wan Joong Kim, Sam Nyung Yi, Yongseok Jun, Yong Ju Yun

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Abstract We fabricate graphene oxide (GO)-coated fiber bundles via electrostatic deposition of GO sheets on polyester/cotton fiber bundles and investigate the changes in their properties by chemical reduction in a hydroiodic acid solution. The structural properties of GO sheets change rapidly upon exposure to reduction agents but remain under a high defect density regime after the reduction. The electrical resistance of the fiber bundles decreases logarithmically for the first minute of the reduction. In contrast to the structural property, a longer chemical reduction over tens of minutes deteriorates the electrical property. The effect of chemical reduction on the electrical conductance of GO-coated fiber bundles is discussed based on the competition of various factors, such as the number of conducting pathways and the carrier density, among others.

Original languageEnglish
Article number14915
Pages (from-to)90-94
Number of pages5
JournalSynthetic Metals
Volume204
DOIs
Publication statusPublished - 2015 Jun

Keywords

  • Chemical reduction
  • Electrical conductance
  • Graphene oxide
  • Polymer
  • Raman spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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