Electrochemical behavior of monolayer and bilayer graphene

Research output: Contribution to journalArticle

  • External authors:
  • Anna T. Valota
  • Kostya S. Novoselov
  • Axel Eckmann
  • Ernie W. Hill

Abstract

Results of a study on the electrochemical properties of exfoliated single and multilayer graphene flakes are presented. Graphene flakes were deposited on silicon/silicon oxide wafers to enable fast and accurate characterization by optical microscopy and Raman spectroscopy. Conductive silver paint and silver wires were used to fabricate contacts; epoxy resin was employed as a masking coating in order to expose a stable, well-defined area of graphene. Both multilayer and monolayer graphene microelectrodes showed quasi-reversible behavior during voltammetric measurements in potassium ferricyanide. However, the standard heterogeneous charge transfer rate constant, k°, was estimated to be higher for monolayer graphene flakes. © 2011 American Chemical Society.

Bibliographical metadata

Original languageEnglish
Pages (from-to)8809-8815
Number of pages7
JournalACS Nano
Volume5
Issue number11
DOIs
Publication statusPublished - 2011