Peculiar Properties of the La_0.25Ba_0.25Sr_0.5Co_0.8Fe_0.2O_3-δ Perovskite as Oxygen Reduction Electrocatalyst.

ABSTRACT: The electrochemical reduction of molecular oxygen is a fundamental process in Solid Oxide Fuel Cells and requires high efficiency cathode materials. Two La_0.25Ba_0.25Sr_0.5Co_0.8Fe_0.2O_3-δ-based perovskite compounds were prepared by solution combustion synthesis, and characterized for their structural, microstructural, surface, redox and electrochemical properties as potential cathodes in comparison with Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ and La_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ perovskites. Results highlighted that calcination at 900 °C led to a "bi-perovskite heterostructure", where two different perovskite structures coexist, whereas at hi

SUBMITTER: Aliotta C 

PROVIDER: S-EPMC9965584 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature