中文摘要：

采用固相法制备PrBa0.5Sr0.5Co2O5＋δ（PBSC）中温固体氧化物燃料电池阴极材料.研究结果表明：PrBa0.5Sr0.5Co2O5＋δ为正交钙钛矿结构.交流阻抗谱的测试结果表明,PBSC-40%GDC电极在800℃时的极化电阻为0.039Ω.cm2.以电解质为支撑体的单电池在800℃时的功率密度达到645 mW.cm^-2.

英文摘要：

Cathode material PrBa0.5Sr0.5Co2O5＋δ（PBSC） for intermediate-temperature solid oxide fuel cell（IT-SOFC） was prepared by solid-state reaction method.The results show that PBSC cathode was single-phase with an orthorhombic perovskite structure.The polarization resistance for composite cathode was as low as 0.039 Ω·cm2 at 800 ℃.The performance of LSGM-supported cells using PBSC-40%GDC composite cathode were investigated.The power densities for PBSC-40%GDC composite cathode are were high as 645 mW·cm^-2 at 800 ℃.