Encapsulation of Metal Catalysts for Stable Solid Oxide Fuel Cell Cathodes

摘要: Metal catalysts have been employed as cathodes for solid oxide fuel cells to facilitate the surface exchange rate in intermediate temperature range (600–800 °C). However, incorporated metal easily agglomerate, resulting loss of reaction sites; thus, electrochemical performance rapidly deteriorates over time. To hinder agglomeration while maintaining catalytic activity, we encapsulated with nano-particulated perovskite materials using an infiltration technique. The encapsulation Ag nanoparticles Sm0.5Sr0.5CoO3-δ (SSC) successfully prevented nanoparticles, initial polarization resistance 200 h at 650 °C, SSC electrodes increased by ~ 190% after 650 °C because thermal nanoparticles.