Processing and ionic conductivity behavior of a Brazilian Yttria Stabilized Zirconia (YSZ) was compared to a commercially produced YSZ through formation of electrolytes for Solid Oxide Fuel cells (SOFC). Aqueous based suspensions containing both types of YSZ were produced for a comparison study. Suspensions were formed, cast into tapes, and laminated in an effort to optimize the densification behavior of the tapes during heat treatment. Recently developed aqueous based organic chemicals were employed in order to comply with environmental concerns for personnel safety.
As-received powders were heat treated at different temperatures to adjust the surface area of the powders and thus produce suspensions with higher YSZ solids content. Subsequent organic chemical adjustments were made to the suspensions in order to maintain sufficient characteristics of adhesion for adequate lamination. Processing of the powders, suspensions, lamination, and sintering behavior are reported in conjunction with the final formation of an electrolyte supported SOFC.