Effect of rhodium infiltration on the microstructure and performance of Ni/Ce0.8Gd0.2O2-δ cermet anode for low temperature solid oxide fuel cell

In order to further enhance the ni/ce0.8gd0.2o2-δ (ni/gdc20) cermet anodic performance for low temperature solid oxide fuel cell (lt-sofc),a study was conducted on the nanostructuring of nio/gdc composite by only once wet-infiltration of rhodium chloride precursor. by using electrochemical impedance spectroscopy (eis) analysis,the effect of only one drop of rh-infiltrating solution on the anodic polarization resistance was examined using symmetric ni–gdc20|gdc20|pt electrolyte-supported cell at 400-600 °c. nanostructural evolution before and after h 2 reduction at 600 °c and also after anodic performance test was investigated by atomic force microscopy (afm),field emission scanning electron microscopy (fe-sem),and transmission electron microscopy (tem) techniques in comparison to the anode itself. despite the fine distribution of rh-infiltrated nanoparticles having average particle size of 11.7 nm,the results showed ineffectiveness and inability of the rh nanoparticles to succeed in decreasing of anodic polarization resistance for h 2 oxidation reaction in lt-sofc. © 2016,iran university of science and technology. all rights reserved.