Abstract
SmBaCo1.7Ni0.3O5+δ-xSm0.2Ce0.8O1.9 (SBCN-xSDC, x = 0–50 wt.%) composite cathodes were prepared and characterized for potential use in intermediate-temperature solid oxide fuel cells (IT-SOFCs) based on an SDC electrolyte. The electrical conductivity and the thermal expansion coefficient (TEC) decreased with an increase in the SDC content of SBCN-xSDC composite cathodes. TEC values decreased from 15.59 × 10−6 K−1 for SBCN to 13.17 × 10−6 K−1 for SBCN-50SDC. Furthermore, the addition of SDC to the SBCN cathode improved its electrochemical performance. Among others, the SBCN-20SDC showed the lowest polarization resistance of 0.0272 Ω cm2 at 800 °C; an anode-supported single-cell configuration of Ni-SDC/SDC/SBCN-20SDC obtained a maximum power density of 628 mW cm−2 at 800 °C. Even when the content of SDC was raised up to 50 wt.%, the electrochemical performance of SBCN-50SDC still exceeded that of pure SBCN. These results indicated that the SBCN-xSDC composite cathode is a promising material for IT-SOFCs.
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.
