O{sub 2} mass-transfer function for polymer-filmed metal electrodes: Application to the linear sweep voltammetry method

Journal Article · Sat Jan 01 04:00:00 EST 2000 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1393191· OSTI ID:20014501

Diard, J P; Le Gorrec, B; Montella, C

O{sub 2} reduction kinetics on polymer-filmed electrodes have been investigated theoretically. A general expression is derived for the O{sub 2} mass-transfer function and applied to the linear sweep voltammetry method. The diffusion-limiting conditions are analyzed, first considering a polymer-filmed electrode in a quiescent solution, and a case diagram is plotted which makes it possible to predict the operating conditions required for the observation of the limiting voltammograms. The influence of the electrode rotation rate is also investigated for the linear sweep voltammetry method used with rotating disk electrodes. The theoretical derivations are also valid for other electroactive species diffusing both in the solution and in the polymer film. Based on the theoretical derivations, previous results in the electrochemical literature are discussed.

• Research Organization: Domaine Univ. (FR)
• OSTI ID: 20014501
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 1 Vol. 147; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
ELECTRODES
FUEL CELLS
MASS TRANSFER
MATHEMATICAL MODELS
OXYGEN
POLYMERS
REDOX REACTIONS