Stabilization of high-cobalt-content perovskites for use as cathodes in solid oxide fuel cells

Abstract

B-site modification of the high-cobalt-content perovskite Ba0.5Sr0.5Co0.8Fe0.2O3−δ reduces its thermal expansion coefficient and stabilizes its structure, allowing its long-term operation without degradation of the area-specific resistance, and thus, maintaining the high electrode performance.