Abstract Scope |
The contact area between ceramic electrode and metal current collector affects the electrical performance of solid oxide fuel cells (SOFCs); thus, it is of interest to investigate the wettability of metals on ceramic electrode surfaces. In this work, the interface between La0.5Sr0.5FeO3 (LSF55), an intermediate temperature SOFC cathode, and silver (Ag), a current collecting material, was analyzed via first-principles calculations, where the La/SrO- and FeO2-terminations of LSF55(100) surface were considered. The relative stability and the wetting angle of the Ag(100)[011]/LSF55(100) interfaces at different temperatures and under oxygen partial pressure conditions were investigated by comparing the calculated work of separation and work of adhesion. |