Paper Information

Journal:   IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING   MARCH 2016 , Volume 13 , Number 1; Page(s) 43 To 49.
 
Paper: 

EFFECT OF RHODIUM INFILTRATION ON THE MICROSTRUCTURE AND PERFORMANCE OF NI/CE0.8GD0.2O2-? CERMET ANODE FOR LOW TEMPERATURE SOLID OXIDE FUEL CELL

 
 
Author(s):  TORKNIK F.S.*, KEYANPOURRAD M., MAGHSOUDIPOUR A., CHOI G.M.
 
* 
 
Abstract: 

In order to further enhance the Ni/Ce 0.8Gd0.2O2-d (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 400-600oC. Nanostructural evolution before and after H2 reduction at 600oC 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.

 
Keyword(s): LT-SOFC, ANODE, NI/GDC CERMET, INFILTRATION, RHODIUM CATALYST
 
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