Research On Based Ased Carbide And Alloy For Formic Aicd Fuel Cell Anode Catslyst

Direct formic acid fuel cell(DFAFC)has been paid more attention in the recent years due to its advantages of high theoretical open circuit potential,limited fuel crossover,and reasonable power densities at low-temperature.The highly active Pd/C catalysts and Pd-Ir/C catalysts for electrooxidation of formic acid have been prepared by a waterless polyol process and a microwave-assisted polyol process,respectively.The particle size,lattice parameter,composition,and micromorphology of the Pd/C catalysts were determined by X-ray diffraction(XRD),energy dispersive analysis of X-ray(EDAX),and transmission electron microscopy(TEM),respectively.Their electrochemical performances for formic acid electrooxidation have been tested by cyclic voltammetry,chronoamperometry,and amperometric i-t curves.The Pd-Ir/C catalyst was also prepared by the microwave-assisted polyol process.The Pd–Ir/C catalyst with the suitable atomic ratio of Pd and Ir =5:1 prepared at the p H value of 10 has the better catalytic activity for the oxidation of formic acid than the Pd/C catalyst.