Preparation and performance of Pr0.7Sr0.3Co1-yCuyO3-δ as cathode material of IT-SOFCs
The Pr0.7Sr0.3Co1-yCuyO3-δ (Y=0.05-0.4) were synthesized by a sol-gel method. Crystal structure, electrical conductivity and electrochemical performance of these samples as cathode material for IT-SOFCs have been investigated. X-ray diffraction indicated that the samples with y ≤ 0.2 were single phase orthorhombic perovskite structure, but in the case of y≥0.3, traces of a second phase were observed. The electrical conductivity decreased gradually with increasing Cu addition. Compared with Pr0.7Sr0.3CoO3-δ, all prepared Pr0.7Sr0.3Co1-yCuyO3-δ compositions with y=0.05-0.3 show lower overpotential and the sample with y=0.1 exhibits the lowest overpotential. With Pr0.7Sr0.3Co0.9 Cu0.1O3-δ cathode and porous NiO/Ce0.8Sm0.2O1.9 anode, the single cell based on SDC electrolyte was obtained by a dry pressing process. Maximum power density of the cell was 481 mW cm-2 at 750℃.
IT-SOFC Cathode Pr0.7Sr0.3Co1-zCuzO3-δ Catalytic activity
Chengjun Zhu Xiaomei Liu Dan Xu Duanting Yan Deyong Wang Wenhui Su
Department of Physics, Jilin University, Changchun 130023, PR China
国际会议
The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)
上海
英文
1470-1473
2007-07-01（万方平台首次上网日期，不代表论文的发表时间）