Memoirs of the Faculty of Engineering, Okayama University
Published by Faculty of Enginerring, Okayama University

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Memoirs of the School of Engineering, Okayama University

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Electrochemistry of Redox Reaction II. On the Kinetic Equations for Chronopotentiometry

Ohzuku Tsutomu Department of Synthetic Chemistry
Sawai Keijiro Department of Synthetic Chemistry
Hirai Taketsugu Department of Applied Chemistry, Faculty of Engineering, Osaka City University
Basic kinetic equations of chronopotentiometric potential-time curves, in which the equations for reversible, quasi-reversible and irreversible electron transfer process appeared in special cases, were given and a chronopotentiometric method for determining kinetic parameters was proposed therefrom. The method was demonstrated for Fe(3+)/Fe(2+) redox reaction in acidic aqueous media. The limitations of the method and the double-layer charging effects on the potential-time curve were discussed. The extension of the method to more general electrode processes was also considered.