Single walled carbon nanotube in the reaction layer for oxygen reduction reaction in gas diffusion electrodes

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 potentiostat-galvanostat 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.