Oxygen evolution on PTFE-modified ruthenium oxide electrodes investigated by CV techniques

A method of analyzing the process of oxygen evolution on both RuO 2 and PTFE-modified RuO 2 electrodes has been developed. The method is based on the use of oxygen reduction to analyze the removal of oxygen from the electrode surface. Oxygen evolution on the electrodes is determined by a kinetic pro...

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Bibliographic Details
Published inJournal of electroanalytical chemistry (Lausanne, Switzerland) Vol. 391; no. 1; pp. 77 - 91
Main Authors Shieh, Deng Tswen, Hwang, Bing Joe
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 04.07.1995
Elsevier Science
Subjects
Chemistry
Cyclic voltammetry
Electrochemistry
Exact sciences and technology
Gas-evolving electrodes
General and physical chemistry
Kinetics and mechanism of reactions
Cyclic voltammetry
Gas-evolving electrodes
Atomic force microscopy
Scanning electron microscopy
Oxygen
Basic solution
Transition metal Compounds
Gas release
Tetrafluoroethylene polymer
Experimental study
Ruthenium Oxides
Surface structure
Electrodes
Potassium Hydroxides
Morphology
Aqueous solution
Electrochemical reaction
Modified material
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Summary:A method of analyzing the process of oxygen evolution on both RuO 2 and PTFE-modified RuO 2 electrodes has been developed. The method is based on the use of oxygen reduction to analyze the removal of oxygen from the electrode surface. Oxygen evolution on the electrodes is determined by a kinetic process on the electrode surface. This process depends on the rates of oxygen bubble collection, oxygen bubble escape and oxygen dissolution, which are related to the hydrophobicity of the electrode surface. The role of PTFE in oxygen evolution is also discussed.
ISSN:1572-6657
1873-2569
DOI:10.1016/0022-0728(95)03967-L