The Influence of the NiO Content on the Microstructure and Property of IT-SOFC Anodes

Abstract

Intermediate temperature SOFC anode/electrolyte plates are made by pechini methods. The structural property of GDC anodes in IT-SOFC was studied. The effect of the synthesizing technology, of the original powder used and that of the sintering temperature, as well as other factors, on crystallization and catalytic activation of anodes have been studied. Results indicate that shrinkage of sintered anode supports with 35％NiO contents lower than that of 50％NiO contents. The effect of porosity of sintered anodes with different NiO contents as a function of sintering temperature was investigated as well. The good sintering kinetics of the GDC anode ceramics were obtained based on the NiO contents control.