Novel Perovskite Semiconductor Based on Co/Fe-Codoped LBZY (La<sub>0.5</sub>Ba<sub>0.5</sub> Co<sub>0.2</sub>Fe<sub>0.2</sub>Zr<sub>0.3</sub>Y<sub>0.3</sub>O<sub>3??</sub>) as an Electrolyte in Ceramic Fuel Cells
نویسندگان
چکیده
Introducing triple-charge (H+/O2–/e–) conducting materials is a promising alternative to modify cathode as an electrolyte in advanced ceramic fuel cells (CFC). Herein, we designed novel perovskite-structured semiconductor Co0.2/Fe0.2-codoped La0.5Ba0.5Zr0.3Y0.3O3?? (CF-LBZY) and used electrode. CF-LBZY perovskite exhibited high ionic (O2–/H+) conductivity of 0.23 S/cm achieved remarkable power density 656 mW/cm2 550 °C. X-ray photoelectron spectroscopy (XPS) analysis revealed that the Co/Fe codoping supports formation oxygen vacancies at B-site structure. Besides, using cathode, cell delivered 150 177 °C, respectively, where Y-doped BaZrO3 Sm-doped ceria (SDC) were electrolytes. During fuel-cell operation, H+ injection into may suppress electronic conduction. Furthermore, metal–semiconductor junction (Schottky junction) has been proposed by considering work function electron affinity interpret short-circuiting avoidance our device. The current systematic study indicates conduction CF-LBZYO3?? potential boost electrochemical performance low-temperature technology.
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ژورنال
عنوان ژورنال: ACS applied energy materials
سال: 2021
ISSN: ['2574-0962']
DOI: https://doi.org/10.1021/acsaem.1c00599