固体氧化物燃料电池LnBaCo2O5 δ-La10Si6O27复合阴极的制备与研究

Study of Preparation and Properties of LnBaCo2O5 δ-La10Si6O27 Composite Cathode for Solid Oxide Fuel Cells

摘要:

利用溶液浸渍法，制备了具有阴极与电解质一体化离子传导路径的新型LnBaCo2O5 δ-La10Si6O27 (Ln=Gd, Sm, Nd) 复合阴极，在此基础上，通过X射线衍射仪和扫描电子显微镜研究了阴极相结构、微观形貌等，并利用交流阻抗谱研究其电化学性能。研究表明此复合阴极表现出比较优异的阴极性能，是一类很有应用前景的中低温固体氧化物燃料电池的阴极材料。

Abstract:

A novel LnBaCo2O5 δ-La10Si6O27 composite cathode, with continuous ion transportation from the cathode to the electrolyte, was prepared by wet impregnation method. The phase composition and microstructure of the cathode were investigated by XRD and SEM. The composite cathode showed an excellent electrocatalytic activity, which was determined by ac impedance spectroscopy, and is a potential cathode material for the intermediate temperature solid oxide fuel cell.