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dc.contributor.authorZamudio-García, J
dc.contributor.authorPorras-Vázquez, José Manuel
dc.contributor.authorCanales-Vázquez, J.
dc.contributor.authorCabeza-Diaz, Aurelio 
dc.contributor.authorLosilla, E.R.
dc.contributor.authorMarrero-López, David 
dc.date.accessioned2021-02-25T12:07:46Z
dc.date.available2021-02-25T12:07:46Z
dc.date.created2021-02-24
dc.date.issued2019-06-25
dc.identifier.citationZamudio-García, J., Porras-Vázquez, J., Canales-Vázquez, J., Cabeza, A., Losilla, E., & Marrero-López, D. (2019). Relationship between the Structure and Transport Properties in the Ce1–xLaxO2–x/2 System. Inorganic Chemistry, 58(14), 9368–9377. https://doi.org/10.1021/acs.inorgchem.9b01104es_ES
dc.identifier.urihttps://hdl.handle.net/10630/20991
dc.description.abstractLa-doped CeO2 materials have been widely investigated for potential applications in different high-temperature electrochemical devices, such as fuel cells and ceramic membranes for hydrogen production. However, the crystal structure is still controversial, and different models based on fluorite, pyrochlore, and/or type-C structures have been considered, depending on the lanthanum content and synthesis method used. In this work, an exhaustive structural analysis of the Ce1−xLaxO2−x/2 system (0.2 < x ≤ 0.7) is performed with different techniques. The average crystal structure, studied by conventional X-ray diffraction, could be considered to be a disordered fluorite; however, the local structure, examined by electron diffraction and Raman spectroscopy, reveals a biphasic mixture of fluorite and C-type phases. The thermal and electrical properties demonstrate that the materials with x ≥ 0.4 are oxide ion proton conductors in an oxidizing atmosphere and mixed ionic electronic conductors in a reducing atmosphere. The water uptake and proton conductivity increase gradually with the increase in La content, suggesting that the formation of the C-type phase is responsible for the proton conduction in these materials.es_ES
dc.description.sponsorshipMINECO (RTI2018-093735-B-I00 y MAT2016-77648-R)es_ES
dc.language.isoenges_ES
dc.publisherAmerican Chemical Societyes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectPilas de combustiblees_ES
dc.subjectCatalizadoreses_ES
dc.subject.otherProton-conductivityes_ES
dc.subject.otherCeO2es_ES
dc.titleRelationship between the Structure and Transport Properties in the Ce1−xLaxO2−x/2 Systemes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.centroFacultad de Cienciases_ES
dc.identifier.doi10.1021/acs.inorgchem.9b01104
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones_ES


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