Electrical Property of La_(0.7)Sr_(0.3)Cr_(0.5-y)Mn_(0.5-z)Co_((y+z))O_(3±δ) as Anode of SOFC

La0.7Sr0.3Cr0.5Mn0.4Co0.1O3±δ anode material was synthesized by glycine nitrate process. X-ray diffraction patterns indicate that single perovskite phase was created after sintering the predecessor at 1623 K for 5 h. By means of four-probe direct current, the electrical conductivities of La0.7Sr0.3Cr0.5Mn0.4Co0.1O3±δ were tested in different atmospheres, the maximum values were 10.2 S·cm-1 in air, 4.5 S·cm-1 in CH4 and 0.42 S·cm-1 in H2 at 1073 K, respectively. The compatibility between La0.7Sr0.3Cr0.5Mn0.4Co0.1O3±δ and La0.9Sr0.1Ga0.8Mg0.2O3-δ were investigated via X-ray diffraction and scanning electron microscopy, which shows that La0.7Sr0.3Cr0.5Mn0.4Co0.1O3±δ oxide, has good chemical and thermal compatibility with La0.9Sr0.1Ga0.8Mg0.2O3-δ. An electrolyte supported single cell consisted of La0.7Sr0.3Cr0.5Mn0.4Co0.1O3±δ|La0.9Sr0.1Ga0.8Mg0.2O3-δ|La0.9Sr0.1Ca0.1Fe0.8Co0.2O3±δ was fabricated through screen printing method. The open circuit voltage of the cell is about 0.92 V, and the maximum power density is about 75 mW·cm-2 at 1123 K.