Author/Authors :
Kazeman، Isa نويسنده Department of Chemistry, K. N. Toosi University of Technology (KNTU), P. O. Box 15875-4416, Tehran, Iran , , Hasanzadeh، Mohammad نويسنده Department of Analytical Chemistry, Faculty of Science, Payame Noor University(PNU), P.O. Box 58168- 45164, Khoy, Iran , , Jafarian، Majid نويسنده Department of Chemistry, K. N. Toosi University of Technology (KNTU), P. O. Box 15875-4416, Tehran, Iran ,
Abstract :
The electro-reduction of oxygen on silver-modified glassy carbon electrode
(Ag/GC) in acidic solution at different potentials was studied by ac-impedance spectroscopy.
The influence of the electrode potential on impedance of oxygen reduction reaction is studied
and a mathematical model was put forward to quantitative account for the impedance
behavior of oxygen reduction. At potentials higher than -0.4 V/Ag-AgCl, a pseudo-inductive
behavior is observed. The conditions required for this behavior are delineated with the use of
the impedance model.
