Croatica Chemica Acta, Vol. 36 No. 1, 1964.
Original scientific paper
Growth and Decay of Activation Overpotential for Systems which Proceed by Two Different Successive Transfer Electrode Reactions
M. M. Paunović
; John Harrison Laboratory of Chemistry, University of Pennsylvan i a, Philadelphia, Pennsylvania, U .S .A .
Abstract
Analysis of growth and decay of activation overpotential for
systems involving two different successive hindered transfer r eac tions,
for large values of 'I'], has shown th at there i·s a considerable
difference between cathodic and anodic galvanostatic transients
(for the same transfer coefficient) for such systems.
The ratio of rates of growth and decay of ov erpotentia ls for
the cathodic and the anodic region, for the same transfer coefficients
and the same overpotential as well as rise time and d ecay
time is given by the ratio of exchange current densities, ir0 : io 0 •
Occu rrence of difference in galvanostatic transients for cathodic
and anodic regions is suggested to be a new diagnostic criteria in
studies of kinetics of electrode processes for occurrence of multielectron
transfer reactions.
Keywords
Hrčak ID:
208316
URI
Publication date:
25.7.1964.
Visits: 391 *