Characterization and Intermediate Temperature Solid Oxide Fuel Cell Performances of BaCe_0.9Tm_0.1O_3-α-KCl-NaCl Composite Electrolyte

摘要

In this study, BaCe 0.9 Tm 0.1 O3-awas 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 BaCe 0.9 Tm 0.1 O3-a-KCl-NaCl composite electrolyte. The structure, morphology,conductivity and fuel cell performance of the obtained samples were investigated. SEM imagesshowed that KCl-NaCl inorganic molten salts covered and filled in the areas between theBaCe 0.9 Tm 0.1 O3-aparticles. The highest power density and conductivity of BaCe 0.9 Tm 0.1 O3-a-KCl-NaCl were 244.4 mW·cm -2 and 2.1×10 -1 S·cm -1 S·cm -1 at 700 °C, respectively.