Anodically generated short-lived species on boron-doped diamond film electrodes

James Farrell, Farrel J. Martin, Heidi B. Martin, William E. O'Grady, Paul Natishan

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Electrodes composed of boron-doped diamond (BDD) films on metal and semiconductor substrates have a wide range of applications in electrochemistry. This research investigated short-lived species (SLS) produced by anodic polarization of BDD electrodes in 1.0 M HClO4 solutions. Normal pulse voltammetry experiments were performed to identify anodically produced SLS with lifetimes of less than 50 ms under open-circuit conditions. Potential step chronoamperometry experiments were performed to investigate the steady-state concentrations of SLS at the electrode-solution interface as a function of potential. Anodic potentials greater than 1.5 V with respect to the standard hydrogen electrode (SHE) were required to generate the SLS. Increasing anodic potentials between 1.5 and 3.0 V/SHE resulted in increasing concentrations of the SLS, until a saturation point was reached. Past work by other investigators suggests that the SLS likely consist primarily of HO* radicals produced from water oxidation.

Original languageEnglish (US)
Pages (from-to)E14-E17
JournalJournal of the Electrochemical Society
Volume152
Issue number1
DOIs
StatePublished - Feb 7 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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