Modeling of Nanostructured Palladium Anode in Solid Oxide Fuel Cells

摘要

In this paper, a mode of nanostructured Pd anode of SOFCs is presented to calculate the effects of nanoparticles on the SOFCs' electrodes performance. Nanostructured electrodes of the SOFCs prepared by wet impregnation have attracted increasing attention as the most effective way to make highly active and advanced structures in the electrodes. The effects of infiltrated Pd-nanoparticles on the performance of Nickel/ Gadolinium doped Ceria (Ni/GDC) anode of SOFC are investigated. It is observed that a small amount of Pd catalyst has a significant decreasing effect on overpotential of anodes. One-dimensional analysis is carried out using a simplified geometry to calculate the effective polarization resistance by assuming the ionic conductor phase (GDC) as columns and the Pd phase mounted on these columns. The results of modeling are presented and compared with the experimental data as a function of temperature.