Electrochemical Characterization and Performance Evaluation of Pr0.7Sr0.3Co1-yCuyO3-δ as Cathode Material for IT-SOFCs
The cathode material Pr<,0.7>Sr<,0.3>Co<,1-y>Cu<,y>O <,3-δ> (y=0.05~0.3) was synthesized by a sol-gel method. 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 unit cell volumes increased with increasing copper content. The electrical conductivity decreased gradually with increasing Cu addition. The investigation of the electrochemical performance suggested that the sample with y=0.1 exhibited the lowest overpotential in all prepared Pr <,0.7>Sr<,0.3>Co<,1-y>Cu<,y>O<3-δ>. With Pr<,0.7>Sr <,0.3>Co<,0.9>Cu<,0.1>O<3-δ> cathode and porous NiO/Ce <,0.8>Sm<,0.2>O<,1.9> anode, the single cell based on SDC thin film electrolyte was obtained by a simple dry pressing process. Maximum power densities of the cell were 406 and 481mW·cm<- 2> at 700 and 750℃, respectively.
IT-SOFC cathode Pr<,0.7>Sr<,0.3>Co<,1-y>Cu<,y>O<,3-δ> catalytic activity rare earths
Zhu Chengjun(朱成军) Liu Xiaomei(刘晓梅) Xu Dan(徐丹) Yan Duanting(严端廷) Pei Li(裴力) Su Wenhui(苏文辉)
Department of Physics, Jilin University, Changchun 130023, China
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
377-381
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）