Porous Boron-Doped Diamond/Carbon Nanotube Electrodes

H. Zanin*, P. W. May, D. J. Fermin, D. Plana, S. M. C. Vieira, W. I. Milne, E. J. Corat

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

106 Citations (Scopus)

Abstract

Nanostructuring boron-doped diamond (BDD) films increases their sensitivity and performance when used as electrodes in electrochemical environments. We have developed a method to produce such nanostructured, porous electrodes by depositing BDD thin film onto a densely packed "forest" of vertically aligned multiwalled carbon nanotubes (CNTs). The CNTs had previously been exposed to a suspension of nanodiamond in methanol causing them to clump together into "teepee" or "honeycomb" structures. These nanostructured CNT/BDD composite electrodes have been extensively characterized by scanning electron microscopy, Raman spectroscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. Not only do these electrodes possess the excellent, well-known characteristics associated with BDD (large potential window, chemical inertness, low background levels), but also they have electroactive areas and double-layer capacitance values similar to 450 times greater than those for the equivalent flat BDD electrodes.

Original languageEnglish
Pages (from-to)990-995
Number of pages6
JournalACS Applied Materials and Interfaces
Volume6
Issue number2
DOIs
Publication statusPublished - 22 Jan 2014

Keywords

  • diamond
  • carbon nanotubes
  • porous electrodes
  • electrochemistry
  • high capacitance
  • CHEMICAL-VAPOR-DEPOSITION
  • THIN-FILM ELECTRODES
  • MESOPOROUS CARBON
  • FIELD-EMISSION
  • PORE STRUCTURE
  • FABRICATION
  • SILICON
  • IMPEDANCE
  • DOPAMINE

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