Rasol Abdullah Mirzaie - Fuel Cell Research Laboratory, Department of Chemistry, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran, Iran
Rahil Yazdanshenas - Fuel Cell Research Laboratory, Department of Chemistry, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran, Iran
Ahmad Nozad Golikand - Material Research Center, Isfahan, Iran
Mehdi Kheirmand - Department of Chemistry, Faculty of Science, Yasouj University, Yasouj, Iran

In this paper, the effect of surface area in the reaction layers of gas diffusion electrodes for oxygen reduction reaction (ORR) was investigated. Various amounts (0, 0.1, 0.2, 0.3, 0.4, 0.5, 1 and 1.5%wt of reaction layer) of single walled carbon nanotube (SWCNT) were inserted in the reaction layer. The results were studied in a three-electrode half-cell system configuration, which connected to a potentiostatgalvanostat system via linear sweep voltammetry (LSV), cyclic voltammetry (CV), chronoamperometry (CHA) and impedance analysis. The results indicated that the addition of SWCNT, by changing in surface area of catalyst layer can improve the ORR kinetics parameters. The best performance is obtained for an electrode with 0.4% SWCNT

Oxygen reduction reaction,Gas diffusion electrode,Surface area,Reaction layer,Single walled carbon nanotube,