Electrochemical behavior of nanostructured La0.8Sr0.2MnO3 as cathodes for solid oxide fuel cells
| Autor: | Jimena Siepe, Ana Gabriela Leyva, Dilson Juan, Diego Germán Lamas, Joaquín Sacanell, Adrián Ezequiel Rubio Lopez, Valeria Ferrari, Miguel Pruneda, Joaquín Hernández Sánchez, Hernán Martinelli |
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| Rok vydání: | 2017 |
| Předmět: |
Microstructured materials
Nanostructure Materials science Nano-structured Ciencias Físicas Nano structuration Oxide Lower temperatures Electrochemistry NANOSTRUCTURES Cathode law.invention Astronomía chemistry.chemical_compound Gasphase chemistry Chemical engineering law Electrochemical behaviors Fuel cells CATHODES High operating temperature SOFC CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona Recercat. Dipósit de la Recerca de Catalunya instname Recercat: Dipósit de la Recerca de Catalunya Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Popis: | La0.8Sr0.2MnO3 (LSM) is one of the most commonly used cathodes in Solid Oxide Fuel Cells (SOFC). In spite of the fact that nanostructured cathodes are expected to display improved performance, the high operating temperature (∼ 1000°C) of LSM-based SOFCs hinders their stability. In the present work, we have developed nanostructured cathodes prepared from LSM nanotubes of enhanced performance, allowing its use at lower temperatures (∼ 800°C). We observed that our cathodes have qualitative improvements compared with microstructured materials: firstly, the diffusion in the gas phase is optimized to a negligible level and secondly, evidence of ionic conduction is found, which is extremely rare in LSM cathodes. We propose that this important change in the electrochemical properties is due to the nanostructuration of the cathode and deserves further attention, including the exploration of other materials. Fil: Sacanell, Joaquin Gonzalo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Hernández Sánchez, Joaquin. Comisión Nacional de Energía Atómica; Argentina Fil: Rubio Lopez, Adrian Ezequiel. Comisión Nacional de Energía Atómica; Argentina Fil: Martinelli, Hernan. Comisión Nacional de Energía Atómica; Argentina Fil: Siepe, Jimena. Comisión Nacional de Energía Atómica; Argentina Fil: Leyva de Guglielmino, Ana Gabriela. Comisión Nacional de Energía Atómica; Argentina Fil: Ferrari, Valeria Paola. Comisión Nacional de Energía Atómica; Argentina Fil: Pruneda, Miguel. Institut Català de Nanociència i Nanotecnologia; España Fil: Juan, Dilson. Comisión Nacional de Energía Atómica; Argentina Fil: Lamas, Diego Germán. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
| Databáze: | OpenAIRE |
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