Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/36888
COMPARTIR / EXPORTAR:
SHARE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Potential electrode materials for symmetrical Solid Oxide Fuel Cells |
Autor: | Ruiz-Morales, Juan Carlos; Canales-Vázquez, Jesús; Lincke, H. | Palabras clave: | Solid Oxide Fuel Cell Symmetrical electrodes |
Fecha de publicación: | 2008 | Editor: | Sociedad Española de Cerámica y Vidrio | Citación: | Bol. Soc. Esp. Ceram. V., 47, 4, 183-188 (2008) | Resumen: | Chromites, titanates and Pt-YSZ-CeO2 cermets have been investigated as potential electrode materials for an alternative concept of Solid Oxide Fuel Cell (SOFC), the symmetrical SOFCs (SFC). In this configuration, the same electrode material is used simultaneously as anode and cathode. Interconnector materials, such as chromites, could be considered as potential SFC electrodes, at least under pure hydrogen-fed at relatively high temperatures, as they do not exhibit significant catalytic activity towards hydrocarbon oxidation. This may be overcome by partially substituting Cr in the perovskite B-sites by other transition metal cations such as Mn. La0.75Sr0.25Cr0.5Mn0.5O3-δ (LSCM) is a good candidate for such SFCs, rendering fuel cell performances in excess of 500 and 300mW/cm2 using pure H2 and CH4 as fuel, at 950 oC. Similarly, typical n-type electronic conductors traditionally regarded as anode materials, such as strontium titanates, may also operate under oxidising conditions as cathodes by substituting some Ti content for Fe to introduce p-type conductivity. Preliminary electrochemical experiments on La4Sr8Ti12-xFexO38-δ-based SFCs show that they perform reasonably well under humidified H2, at high temperatures. A third group of materials is the support material of any typical cermet anode, i.e. YSZ, CeO2 plus a current collector. It has been found that this combination could be optimised to operate as SFC electrodes, rendering performances of 400mW/cm2 under humidified pure H2 at 950oC. | Versión del editor: | http://boletines.secv.es/upload/2008090394436.47[4]183-188.pdf | URI: | http://hdl.handle.net/10261/36888 | ISSN: | 0366-3175 |
Aparece en las colecciones: | (ICV) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
BSECV-2011-junio-16.pdf | 720,29 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
Page view(s)
283
checked on 21-abr-2024
Download(s)
143
checked on 21-abr-2024
Google ScholarTM
Check
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.