Abstract
The nano-size (La0.2Nd0.2Sm0.2Sr0.2Ba0.2)Co0.2Fe0.8O3/Ce0.8Sm0.2O1.9（SDC)composite cathodes were prepared by impregnating high entropy (La0.2Nd0.2Sm0.2Sr0.2Ba0.2)Co0.2Fe0.8O3 (HE-LNSSB) catalytic phase into the SDC electrode skeleton. The catalytic activity and the stability of the nano-size LNSSB phase are investigated. The XRD results show that the orthorhombic perovskite phase was obtained when the HE-LNSSB precursor was calcined at 800 °C. At 700 °C, the pristine nano-size HE-LNSSB/SDC composite cathode shows a specific polar resistance (Rasp) of 0.30 Ω·cm2. The Rasp of the pristine nano-size HE-LNSSB composite cathode was reduced by 50.8 % compared with that of the sintered HE-LNSSB cathode. The Rasp of the aged nano-size HE-LNSSB composite cathode was 0.31 Ω·cm2 at 700 °C and the catalytic activity did not decay. The SEM and the XPS results show that the particle micrograph of the nano-size HE-LNSSB catalytic phase hardly changes and Sr elements do not segregate on the HE-LNSSB phase surface after being aged. The research results show that the nano-size HE-LNSSB/SDC composite cathode will be a potential cathode material for the intermediate temperature solid oxide fuel cells.
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.
