Abstract
Mixed ionic and electronic conducting oxides (MIEC) used as cathodes for solid oxide fuel cells (SOFC) have demonstrated their interest to enhance the electrocatalytic activity compared to only electronic oxides. In this paper, MIEC oxides belonging to the Ruddlesden-Popper series, such as La2NiO4, have been prepared by the sol-gel route to synthesize powders and a dip-coating process as the deposition method. In this work, this low cost process was used to prepare various graded cathodes on YSZ pellets and impedance spectroscopy studies were performed to characterize electrochemical performance. By adapting slurries, cathode layers with different porosity and thicknesses were obtained. A ceria gadolinium oxide (CGO) barrier layer has also been introduced. A systematic correlation between microstructure, composition and electrochemical performance of these cathodes has been attempted. Significant enhancement in Area Specific Resistance (ASR) has been achieved through the use of a compact interlayer when compared with standard porous La2NiO4 electrodes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
