شماره ركورد كنفرانس :
3531
عنوان مقاله :
Kinetic Study of oxygen reduction reaction on platinum particles dispersed in polyaniline film
Author/Authors :
Mir Reza Majidi Dep. Of analytical chemistry – Faculty of chemistry – Tabriz university , Zahra Abdullah Mirzaie Dep. Of analytical chemistry – Faculty of chemistry – Tabriz university , Rasol Abdullah Mirzaie Dep. Of chemistry – Faculty of science – Shahid Rajaee university
كليدواژه :
Oxygen reduction reaction , Polyaniline , fuel cell , Modified glassy carbon electrode , Electrocatalyst , Platinum
سال انتشار :
ارديبهشت 1391
عنوان كنفرانس :
دومين سمينار پيل سوختي ايران
چكيده لاتين :
Oxygen reduction reaction is thermodynamically favored but kinetically slow.
Oxygen is used in fuel cell systems as oxidant and fuel cell system is suitable
choice for production of clean energy in the present century. For production of more
electricity in these systems, the oxygen reduction reaction must be catalyzed. In
order to increase reaction rate, polyaniline was used as a substrate for platinum
electrocatalyst. After reaching the optimized conditions, the kinetically parameters
for oxygen reduction reaction were studied through the rotating disk electrode
voltammetry technique and Tafel plot. At the optimized conditions, the results of
Koutecky–Levich analysis indicate that the total number of exchanged electrons,
symmetry factor and the electron transfer rate constant, are 2.1e ,0.412,and
10-5.99 cms-1 respectively. Also, the results of Tafel plot analysis show that the
exchange current density and the number of the rate-determining step electrons
are10-5.13 Acm-2 and 1.03 @ 1e respectively.
