INVESTIGATION OF CARBON-SUPPORTED Pd AND PC0 NANOPARTICLES AS ELECTROCATALYSTS FOR THE OXYGEN REDUCTION REACTION

Carbon-supported Pd and PdCo alloy electrocatalysts of different Pd:Coatomic ratios(1:1, 2:1, 3:1 and 10:1) were prepared by the impregnation synthesis method at room temperature by ethylene glycol (EG) reduction. The prepared PdCo bimetallic nanoparticles show a single-phase facecentered-cubic (fcc) disordered structure. The performance of these electrocatalysts in the Oxygen Reduction Reaction (ORR) was evaluated with cyclic voltammetry, linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), inductive coupled plasma (ICP), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The best performance of synthesized catalysts was found for a Pd:Co with atomic ratio of 3:1.

کلیدواژه ها:

PdCo alloy ، Nanoparticle ، Impregnation method ، Oxygen Reduction Reaction