Nanostructured La0.5Ba0.5CoO3 as cathode for solid oxide fuel cells. Issue 11 (1st August 2019)

• Record Type: Journal Article
• Authors: Mejía Gómez, Augusto E.; Lamas, Diego G.; Leyva, Ana Gabriela; Sacanell, Joaquín
• Is Part Of: Ceramics international. Volume 45:Issue 11(2019)
• Page Start: 14182
• Page End: 14187
• Publication Date: 2019-08-01
• Subjects: SOFC -- Cathodes -- Nanostructured materials; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.04.122
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A simple method has been used to synthesize nanostructured La0.5 Ba0.5 CoO3 (LBCO) powders, by confining chemical precursors into the pores of polycarbonate filters. The proposed method allows us to obtain powders formed by crystallites of different sizes, it is scalable and does not involve the use of sophisticated deposition techniques. The area specific polarization resistance of symmetrical cells was studied to analyze the electrochemical behavior of the LBCO nanostructures as cathodes for Solid-Oxide Fuel Cells. We show that the performance is improved by reducing the size of the crystallites, obtaining area specific resistance values of 0.2 Ωcm 2 at 700 °C, comparable with newly developed cathodes using novel deposition techniques.