Solid oxide fuel cells (SOFC) initially was shown to operate effectively at high temperatures (~1000°C), reducing the operating temperature to less than 600°C provides chances of implementing various material in construction of Low Temperature -SOFC (LT-SOFC). Stabilized ZrO2, doped CeO2, Bi2O3-based, ABO3-based, and other oxides are among types of electrolytes used in LT-SOFC construction. Electrolyte, as one of the main constituent, efficiency influenced the performance of a LT-SOFC. In this study the most appropriate type of electrolyte that allows oxygen transfer in a LT-SOFC is determined. To achieve this purpose, The Fuzzy -Analytical Hierarchy Process (F-AHP) is assisted. The scalability, stability, and conductivity were considered as judgment criteria. Then available alternatives for electrolyte were prioritized. Based on the results, stability was the most important criterion in the decision making process. Besides, with respect to the goal, Ceria-based electrolytes had the highest preference compared to other alternatives.
