Metal catalysts have been employed as cathodes for solid oxide fuel cells to facilitate the surface exchange rate in the intermediate temperature range (600–800 °C). However, incorporated metal catalysts easily agglomerate, resulting in the loss of the reaction sites; thus, the electrochemical performance rapidly deteriorates over time. To hinder the agglomeration of metal catalysts while maintaining the catalytic activity, we encapsulated metal catalysts with nano-particulated perovskite materials using an infiltration technique. The encapsulation of Ag nanoparticles with nano-particulated Sm_0.5Sr_0.5CoO_3-δ (SSC) successfully prevented the agglomeration of Ag nanoparticles, maintaining the initial polarization resistance for 200 h at 650 °C, while the polarization resistance of the SSC electrodes with the Ag nanoparticles increased by ~ 190% after 200 h at 650 °C because of the thermal agglomeration of Ag nanoparticles.

金属催化剂已被用作固体氧化物燃料电池的阴极，以促进中间温度范围（600–800°C）中的表面交换速率。然而，掺入的金属催化剂容易团聚，导致反应位点的损失。因此，电化学性能随时间迅速劣化。为了在保持催化活性的同时阻止金属催化剂的团聚，我们使用渗透技术将金属催化剂与纳米颗粒钙钛矿材料一起包封。纳米颗粒Sm _0.5 Sr _0.5 CoO3 _-δ包覆Ag纳米粒子 （SSC）成功地防止了Ag纳米粒子的团聚，在650°C下保持200 h的初始极化电阻，而具有Ag纳米粒子的SSC电极在650°C下200 h后的极化电阻增加了190％。 Ag纳米颗粒的热团聚。