Samarium cobaltite

Single-phase perovskite MIECs such as Sr-doped lanthanum cobaltite (LSC), lanthanum ferrite (LSF), lanthanum cobalt ferrite (LSCF) and samarium cobaltite (SSC), and Ca-doped lanthanum ferrite (LCF) [13] are sometimes used alone in SOFC cathodes, as depicted in the lower right-hand comer of Figure 6.1, but combining an... 

Strontium-doped samarium cobaltite (SSC) is selected as the air electrode material of our standard cells. The slurry of Smo.sSro.sCoOs g powder is screen printed onto the electrolyte disk with an already sintered anode. The final sintering of the cathode is performed in air at a temperature range of 1000°-1200°C for 3 h. The average thickness of the porous cathode is about 30-50 pm. Figure 9.3(b) shows the electron microscope image of the air-fired microstructure of the air electrode of our standard cell. It has been demonstrated that the cathodic overpotential of the cell is very small [16]. 

De Jonghe s group studied the effects of nanoparticle infiltration on LSM cathodes to improve the catalytic activity of LSM at reduced temperatures [75]. Smo.eSro.rCoOs-j [samarium strontium cobaltite (SSC)] was chosen to infiltrate into LSM because it is an effective electrocatalyst for oxygen reduction reactions owing to its MIEC properties. The SSC solution was prepared using the nitrate salts... 

---