A Research upon Proton Exchange Membrane Fuel Cells via an Stable and Active Pt/Ta-TiO2 Electrocatalyst

In this research, a new type of carbon-free Pt/Ta-TiO2 electrocatalyst has been presented. Mesoporous Ta-TiO2 hollow spheres were synthesized by the sol-gel method usingpolystyrene (PS) sphere templates. Pt nanoparticles (NPs) were then deposited onto mesoporous Ta-TiO2 hollow spheres by a simple wet-chemical route in aqueous solution,without the need for surfactants or potentiostats. The enhanced densities of Pt NPs upon Ta-TiO2 supports could be easily modulated by simply adjusting the experimental parameters. Electrochemical studies of Pt/Ta-TiO2 show much enhanced activity and stability than bargaining Pt/C catalyst. PtNP/Ta-TiO2 is a promising new cathode catalyst for Proton exchange membrane fuel cell process (PEMFC) applications

Keywords:

PEMFC , catalyst , mesoporous , fuel cell