Single-phase silver (Ag)-doped La_0.85-xSr_0.15Ag_xFeO_3-δ (x = 0–0.05) materials (LSAF) were synthesized by wet synthesis route and calcined at 800 °C in air. The materials exhibited no thermal degradation in Ar and synthetic air below sintering temperature at 1200 °C of the cathode for solid oxide fuel cells. Exsolution of Ag nanoparticles from the perovskite lattice at 420 °C in reducing 5% H₂/N₂ was investigated, and electrocatalytic activity of the cathodes towards oxygen reduction reaction for solid oxide fuel cells was demonstrated. Scanning electron microscopy confirmed exsolution of Ag nanoparticles with increased effective surface area, and the particles were distributed with a good contact on the surface of the perovskite. Electrochemical performance of novel materials was tested and compared. Enhanced cathode with Ag nanoparticles revealed the area specific resistance of 0.23 and 0.15 Ω cm² at 800 °C in 20% O₂/N₂ before and after Ag exsolution, respectively. The area specific resistance of the cathode decreased with Ag exsolution, operation temperature, and increasing oxygen partial pressure.

 通过湿法合成单相掺银（La）的La _{0.85- x} Sr _0.15 Ag _x FeO _{3- δ}（x = 0-0.05）材料（LSAF），并在800°C的空气中煅烧。在低于固体氧化物燃料电池阴极烧结温度1200°C的条件下，该材料在Ar和合成空气中均无热降解。在420°C下还原5％H ₂ / N _2时钙钛矿晶格中银纳米颗粒的溶解进行了研究，并证明了阴极对固体氧化物燃料电池的氧还原反应的电催化活性。扫描电子显微镜证实有效表面积增加的银纳米颗粒的析出，并且颗粒以良好的接触分布在钙钛矿表面上。测试并比较了新型材料的电化学性能。用Ag纳米颗粒增强的阴极在Ag溶出之前和之后分别在800℃，20％O ₂ / N _2中显示出0.23和0.15Ωcm ²的面积比电阻。阴极的面积比电阻随Ag的析出，操作温度和氧分压的增加而降低。