Author/Authors :
Sandoval، نويسنده , , Mَnica V. and Matta، نويسنده , , Aracely and Matencio، نويسنده , , Tulio and Domingues، نويسنده , , Rosana Zacarias and Ludwig، نويسنده , , Gustavo A. and De Angelis Korb، نويسنده , , Matias and de Fraga Malfatti، نويسنده , , Célia and Gauthier-Maradei، نويسنده , , Paola and Gauthier، نويسنده , , Gilles H.، نويسنده ,
Abstract :
The effect of Ba-impregnation within a bi-layered NiO–YSZ/NiO–GDC anode for solid oxide fuel cells (SOFC) has been investigated. The in situ formation of BZY/BCG proton conducting phases is proved by X-ray diffraction (XRD) and analyzed in detail by the Rietveld method. The integration of barium within the cermet microstructure is also evidenced by Electron Microscopy, where the presence of BZY/BCG phases creates possible additional paths for proton conduction. Electrochemical impedance spectroscopy (EIS) analysis indicates that the proton conducting phases generate a global decrease in the total polarization resistance, and in particular in its charge transfer component.
Keywords :
Anode , cermet , SOFC , Proton conductor , Barium impregnation , Impedance
