Mechanical Engineering Commons^™

Sr2Fe1.5Mo0.5O6 As Cathodes For Intermediate-Temperature Solid Oxide Fuel Cells With La0.8Sr0.2Ga0.87Mg0.13O3 Electrolyte, Guoliang Xiao, Qiang Liu, Fei Zhao, Lei Zhang, Changrong Xia, Fanglin Chen

Faculty Publications

The performance of Sr₂Fe_1.5Mo_0.5O₆ (SFMO) as a cathode material has been investigated in this study. The oxygen ionic conductivityof SFMO reaches 0.13 S cm^-1 at 800°C in air. The chemical diffusion coefficient (D_chem) and surface exchange constant (k_ex) of SFMO at 750°C are 5.0 x 10^-6 cm² s^-1 and 2.8 x 10^-5 cm s^-1, respectively, suggesting that SFMO may have good electrochemicalactivity for oxygen reduction. SFMO shows a thermal expansion coefficient (TEC) of 14.5 x 10^-6 K^-1 the …