TY - JOUR AU - Grassi, Joaquín AU - Macías, Mario A. AU - Basbus, Juan F. AU - Castiglioni, Jorge AU - Gauthier, Gilles H. AU - Serquis, Adriana C. AU - Suescun, Leopoldo PY - 2021/11/30 Y2 - 2024/03/29 TI - Synthesis and Characterization of High Temperature Properties of YBa2Cu3O6+δ Superconductor as Potential Cathode for Intermediate Temperature Solid Oxide Fuel Cells JF - Journal of Material Science and Technology Research JA - J. Mater. Sci. Technol. Res. VL - 8 IS - SE - Articles DO - 10.31875/2410-4701.2021.08.10 UR - https://www.zealpress.com/jms/index.php/jmstr/article/view/338 SP - 82-91 AB - <p>YBa<sub>2</sub>Cu<sub>3</sub>O<sub>6+δ</sub> (YBC) oxygen deficient perovskite was synthesized by an auto-combustion method and was studied as potential cathode for Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFC). Synchrotron X-ray thermodiffraction in air shows a phase transition from orthorhombic <em>Pmmm</em> to tetragonal <em>P4/mmm</em> space groups at ~ 425 °C. The chemical compatibility with Ce<sub>0.9</sub>Gd<sub>0.1</sub>O<sub>1.95</sub> (GDC) electrolyte was investigated in air where certain reactivity was observed above 800 °C. However, the main phase is Ba(Ce<sub>1-x</sub>Y<sub>x</sub>)O<sub>3</sub>, a good ionic conductor. The catalytic performance in air was obtained by electrochemical impedance spectroscopy (EIS) measurements on YBC/GDC/YBC symmetrical cells. The area specific resistance (ASR) values change from 13.66 to 0.14 Ω cm<sup>2</sup> between 500 and 800 °C, with activation energy (E<sub>a</sub>) of 0.41 eV. The results suggest potential applications of YBC as IT-SOFC cathode.</p> ER -