| Autor: |
Adriana Serquis, Leopoldo Suescun, Mario A. Macías, Jorge Castiglioni, Joaquín Grassi, Gilles H. Gauthier, Juan Felipe Basbus |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Journal of Material Science and Technology Research. 8:82-91 |
| ISSN: |
2410-4701 |
| DOI: |
10.31875/2410-4701.2021.08.10 |
| Popis: |
YBa2Cu3O6+δ (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 Pmmm to tetragonal P4/mmm space groups at ~ 425 °C. The chemical compatibility with Ce0.9Gd0.1O1.95 (GDC) electrolyte was investigated in air where certain reactivity was observed above 800 °C. However, the main phase is Ba(Ce1-xYx)O3, 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 cm2 between 500 and 800 °C, with activation energy (Ea) of 0.41 eV. The results suggest potential applications of YBC as IT-SOFC cathode. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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