Preparation, characterization and electrocatalytic activity for oxygen reduction reaction in PEMFCs of bimetallic PdNi nanoalloy

The modified polyol reduction method was used to prepare a carbon-supported bimetallic PdNi nanoalloys (BMNAs). The prepared catalyst was characterized using X-ray diffraction and transmission electron microscopy. The obtained data indicated that, the average particle size of the alloys in the range ≈ 20–50 nm. The morphology structure shows uniformly distributed particles on the supported carbon surface. The catalytic activity of the compounds for oxygen reduction reaction was investigated by cyclic voltammetry and electrochemical polarization measurements in rotating disk electrodes. As a function of time and calcination temperature, the improved activity and stability were obtained at 300 °C for 3 h.