Here, we reported the development of catalysts for fuel cell reactions based on Pt nanoparticles supported on hybrid carbon support networks comprising highly conducting carbon nanofibers (CNFs) and CB (Vulcan-XC-72). By means of a rapid and efficient microwave assisted synthesis, Pt nanoparticles were deposited on various hybrid carbon structures. Hybrid carbon supports provide not only the superior Pt utilization but also better GDE porosity, and conductivity. Resultant catalysts were investigated by X-ray Diffraction (XRD), X-Ray photoelectron spectroscopy (XPS) and Transmission Electron Microscopy (TEM) techniques for their structure and morphology. The uniformly dispersed Pt nanoparticles on hybrid carbon support with a small particle size (2-3 nm) were obtained. Electrocatalytic activity of prepared electrocatalysts towards fuel cell reactions (HOR and ORR) were investigated by cyclic voltammetry (CV) and linear sweep voltammetry (LSV). The hybrid electrocatalyst was exhibited superior HOR and ORR catalytic activities by enhanced utilization of Pt. Moreover, gas diffusion electrodes and membrane electrode assemblies are fabricated by using synthesized electrocatalysts and tested in the PEMFC.
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