Ru₃Pd₆Pt Nanocatalyst for the Oxygen Reduction in a PEM Fuel Cell

摘要

Nanosized and highly dispersed on carbon black low platinum Ru3Pd6Pt catalyst, was synthesized bythe reduction of RuCl3, PdCl2 and H2PtCl6 in ethylene glycol solution at 180C, studied for the oxygenreduction reaction in acid media and in a single PEM fuel cell. XRD, SEM and TEM measurementswere used to characterize the synthesized three metallic catalysts. Results conducted to nanocrystallitesof 3-9 nm in average sizes with a spherical shape homogenously and highly dispersed particles.Kinetic parameters were evaluated from steady state measurements with a rotating disk electrode(RDE) in a 0.5M H2SO4 solution at room temperature. The catalyst was tested as a cathode electrode in-2 a single H2/O2 PEM fuel cell, achieving a power density of 175 mW cm at 0.40 V and 80C.