Kinetics of oxygen reduction at RuO2-coated titanium electrode in alkaline solution

C. C. Chang, T. C. Wen

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Oxygen reduction at RuO2-coated titanium electrodes prepared by thermal decomposition was investigated by employing cyclic voltammetry and rotating-disc electrode techniques. Cyclic voltammetric results indicated that oxygen reduction was catalysed by at least some hydrous oxyruthenium species, (i.e., Ru(III)) at low polarization range (E > -0.45 V) and by at least some low oxide states of ruthenium species at high polarization (E < -0.45 V). On the basis of measurements using a rotating disc electrode together with polarization curves, Tafel slopes and stoichiometric number determinations, two mechanisms for oxygen reduction on an RuO2-coated titanium electrode are proposed.

Original languageEnglish
Pages (from-to)355-363
Number of pages9
JournalJournal of Applied Electrochemistry
Volume27
Issue number3
DOIs
Publication statusPublished - 1997 Jan 1

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry
  • Materials Chemistry

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