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Title

Fe-substituted (La,Sr)TiO3 as potential electrodes for symmetrical fuel cells (SFCs)

AuthorsCanales-Vázquez, Jesús; Ruiz-Morales, J. C.; Marrero-López, D.; Peña-Martínez, Juan; Núñez, Pedro; Gómez-Romero, P. CSIC ORCID
KeywordsSOFC
Electrode
Symmetrical fuel cell
Perovskite
Issue Date27-Sep-2007
PublisherElsevier
CitationJournal of power sources 171(2): 552-557 (2007)
AbstractIn the work presented herein, the potential use of La4Sr8Ti12−xFexO38−δ (LSTF) materials as electrodes for a new concept of solid oxide fuel cells, symmetrical fuel cells (SFCs), is considered. Such fuel cells use simultaneously the same material as anode and cathode, which notably simplifies the assembly and further maintenance of the cells. Therefore, we search for materials showing high conductivity in a wide range of oxygen partial pressures in addition to certain degree of catalytic activity for the oxidation of the fuel and reduction of the oxidant, respectively. The preliminary electrochemical experiments performed reveal that the overall conductivity increases notably upon Fe substitution, being the main contribution electronic n-type. The fuel cell tests indicate that LSTF composites with YSZ and CeO2 perform reasonably well under H2 conditions, although the performance in methane is rather modest and require further optimisation
Publisher version (URL)http://dx.doi.org/10.1016/j.jpowsour.2007.05.094
URIhttp://hdl.handle.net/10261/15632
DOI10.1016/j.jpowsour.2007.05.094
ISSN0378-7753
Appears in Collections:(ICMAB) Artículos

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