Preparation of dense electrolyte layer using dissociated oxygen electrochemical vapor deposition technique

A dense layer of yttria-stabilized zirconia (YSZ) was deposited on a porous substrate by a modified type of electrochemical vapor deposition (EVD) technique, making use of dissociated oxygen from nickel oxide in the porous substrate as an oxygen source for the reaction. As the oxygen-supplying substrates, NiO–ceria porous pellets containing some depressions on the deposited face were used to fabricate modified planar-type SOFC based on the rough anode of Ni–ceria. The dissociated oxygen electrochemical vapor deposition (DOEVD) technique was very suitable for fabrication of this type of cell.