Characterization and Intermediate Temperature Solid Oxide Fuel Cell Performances of BaCe0.9Tm0.1O3-α-KCl-NaCl Composite Electrolyte

In this study, BaCe0.9Tm0.1O3-α was prepared via a sol-gel combustion method using cerium nitrate, thulium oxide and barium nitrate as raw materials. Subsequently, it was reacted with the binary KCl- NaCl salts to obtain BaCe0.9Tm0.1O3-a-KCl-NaCl composite electrolyte. The structure, morphology, conductivity and fuel cell performance of the obtained samples were investigated. SEM images showed that KCl-NaCl inorganic molten salts covered and filled in the areas between the BaCe0.9Tm0.1O3-a particles. The highest power density and conductivity of BaCe0.9Tm0.1O3-a-KCl- NaCl were 244.4 mW·cm -∙ and 2.1x10-1 S∙cm -1 S∙cm -1 at 700 °C, respectively.