A Ph.D. thesis was discussed in the Department of Materials Engineering, University of Technology on the mechanical and electrical properties of electrolytes with triple additions by the postgraduate student Mrs. Abeer Farouq Abbas. The thesis aimed at manufacturing, developing new materials to be used for electrolyte via inoculating with different oxides and manufacturing solid fuel cells after preparing and manufacturing the anode electrodes, which is the first of its kind in the world in the field of SOFCs and analyzing it statistically with ANOVA technology for electrolytes and optimum solid fuel cells besides reviewing all relations, as well as the study had a high significant effect and explained by regression equations between the relations. The thesis concluded that a remarkable improvement in the studied properties with co-vaccination with oxides and the best performance of the solid fuel cell was achieved via using the co-grafting of the electrolyte solid fuel cell.