Electrochemical assessment of novel misfit Ca-cobaltite-based composite SOFC cathodes synthesized by solution blow spinning. Issue 6 (June 2018)

• Record Type: Journal Article
• Authors: Silva, Vinícius D.; Silva, Rinaldo M.; Grilo, João P.F.; Loureiro, Francisco J.A.; Fagg, Duncan P.; Medeiros, Eliton S.; Macedo, Daniel A.
• Is Part Of: Journal of the European Ceramic Society. Volume 38:Issue 6(2018)
• Page Start: 2562
• Page End: 2569
• Publication Date: 2018-06
• Subjects: Solution blow spinning -- Misfit Ca-cobaltite -- Impedance spectroscopy -- Cathode -- SOFC; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2018.01.044
• Languages: English
• ISSNs: 0955-2219

Abstract

Graphical abstract: Highlights: A new cathode for solid oxide fuel cells based on Ca3 Co4 O9 (C349) and PrOx is proposed. Misfit-Ca cobaltite is synthetized for the first time by Solution Blow Spinning (SBS). PrOx allows a remarkable 15 times decrease in total polarisation resistance. The improvements rely on charge transfer and surface exchange processes. Abstract: A new composite cathode for solid oxide fuel cells based on Ca3 Co4 O9 (C349) and PrOx was synthesized using a novel solution blow spinning (SBS) process. It is demonstrated that the presence of PrOx in this cathode permits a remarkable decrease in total polarisation resistance, by ∼15 times, mainly due to improvements in charge transfer and surface exchange processes.