Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/121320
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Electrochemical performance of intermediate temperature micro-tubular solid oxide fuel cells using porous ceria barrier layers |
Autor: | López-Robledo, M. J. CSIC ORCID; Laguna-Bercero, M. A. CSIC ORCID ; Silva-Treviño, J. CSIC; Orera, V. M. CSIC ORCID; Larrea, A. CSIC ORCID | Palabras clave: | Dip coating Electrochemical properties GDC Micro-tubular SOFC |
Fecha de publicación: | jul-2015 | Editor: | Elsevier | Citación: | Ceramics International 41(6): 7651-7660 (2015) | Resumen: | We describe the manufacture and electrochemical characterization of micro-tubular anode supported solid oxide fuel cells (mT-SOFC) operating at intermediate temperatures (IT) using porous gadolinium-doped ceria (GDC: Ce0.9Gd0.1O2−δ) barrier layers. Rheological studies were performed to determine the deposition conditions by dip coating of the GDC and cathode layers. Two cell configurations (anode/electrolyte/barrier layer/cathode): single-layer cathode (Ni–YSZ/YSZ/GDC/LSCF) and double-layer cathode (Ni–YSZ/YSZ/GDC/LSCF–GDC/LSCF) were fabricated (YSZ: Zr0.92Y0.16O2.08; LSCF: La0.6Sr0.4Co0.2Fe0.8O3−δ). Effect of sintering conditions and microstructure features for the GDC layer and cathode layer in cell performance was studied. Current density–voltage (j–V) curves and impedance spectroscopy measurements were performed between 650–800 °C, using wet H2 as fuel and air as oxidant. The double-cathode cells using a GDC layer sintered at 1400 °C with porosity about 50% and pores and grain sizes about 1 μm, showed the best electrochemical response, achieving maximum power densities of up to 160 mW cm−2 at 650 °C and about 700 mW cm−2 at 800 °C. In this case GDC electrical bridges between cathode and electrolyte are preserved free of insulating phases. A preliminary test under operation at 800 °C shows no degradation at least during the first 100 h. These results demonstrated that these cells could compete with standard IT-SOFC, and the presented fabrication method is applicable for industrial-scale. | Versión del editor: | http://dx.doi.org/10.1016/j.ceramint.2015.02.093 | URI: | http://hdl.handle.net/10261/121320 | DOI: | 10.1016/j.ceramint.2015.02.093 | ISSN: | 0272-8842 |
Aparece en las colecciones: | (ICMA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Electrochemical performance.pdf | 8,56 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
25
checked on 12-abr-2024
WEB OF SCIENCETM
Citations
20
checked on 18-feb-2024
Page view(s)
333
checked on 22-abr-2024
Download(s)
532
checked on 22-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Este item está licenciado bajo una Licencia Creative Commons