Strandbakke, R.; Wragg, DS.; Sørby, MH.; Guzik, MN.; Gunnæs, A.; Szpunar, I.; Wachowski, SL.... (2022). Structural properties of mixed conductor Ba1-xGd1-yLax+yCo2O6-delta. Dalton Transactions. 51(48):18667-18677. https://doi.org/10.1039/d2dt02277j
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/196527
Título:
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Structural properties of mixed conductor Ba1-xGd1-yLax+yCo2O6-delta
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Autor:
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Strandbakke, Ragnar
Wragg, David S.
Sørby, Magnus H.
Guzik, Matylda N.
Gunnæs, Anette
Szpunar, Iga
Wachowski, Sebastian Lech
Balaguer Ramirez, Maria
Carvalho, Patricia A.
Mielewczyk-Gryn, Aleksandra
Serra Alfaro, José Manuel
Norby, Trus
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Entidad UPV:
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Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química
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Fecha difusión:
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Resumen:
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[EN] Ba1¿xGd1¿yLax+yCo2O6¿¿ (BGLC) compositions with large compositional ranges of Ba, Gd, and La have been characterised with respect to phase compositions, structure, and thermal and chemical expansion. The results show ...[+]
[EN] Ba1¿xGd1¿yLax+yCo2O6¿¿ (BGLC) compositions with large compositional ranges of Ba, Gd, and La have been characterised with respect to phase compositions, structure, and thermal and chemical expansion. The results show a system with large compositional flexibility, enabling tuning of functional properties and thermal and chemical expansion. We show anisotropic chemical expansion and detailed refinements of emerging phases as La is substituted for Ba and Gd. The dominating phase is the double perovskite structure Pmmm, which is A-site ordered along the c-axes and with O vacancy ordering along the b-axis in the Ln-layer. Phases emerging when substituting La for Ba are orthorhombic Ba-deficient Pbnm and cubic LaCoO3-based R[3 with combining macron]c. When La is almost completely substituted for Gd, the material can be stabilised in Pmmm, or cubic Pm[3 with combining macron]m, depending on thermal and atmospheric history. We list thermal expansion coefficients for x = 0¿0.3, y = 0.2.
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Palabras clave:
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GD
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PR
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Derechos de uso:
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Reconocimiento (by)
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Fuente:
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Dalton Transactions. (issn:
1477-9226
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DOI:
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10.1039/d2dt02277j
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Editorial:
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The Royal Society of Chemistry
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Versión del editor:
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https://doi.org/10.1039/d2dt02277j
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Código del Proyecto:
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación (PEICTI) 2013-2016/PCIN-2017-125/ES/PRINCIPIO EN HIDRATACION DE OXIDOS CONDUCTORES MIXTOS/
info:eu-repo/grantAgreement/RCN//272797 //"GoPHy MiCO"/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-102161-B-I00/ES/CONVERSION DIRECTA DE CO2 EN PORTADORES DE ENERGIA QUIMICA UTILIZANDO REACTORES ELECTROCATALITICOS DE MEMBRANA/
info:eu-repo/grantAgreement/MCIU//IJCI-2017-34110/
info:eu-repo/grantAgreement/NCN//2016%2F22%2FZ%2FST5%2F00691/
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Agradecimientos:
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The research has been supported by the National Science Centre Poland (2016/22/Z/ST5/00691), the Spanish Ministry of Science and Innovation (PCIN-2017-125, RTI2018-102161 and IJCI-2017-34110), and the Research Council of ...[+]
The research has been supported by the National Science Centre Poland (2016/22/Z/ST5/00691), the Spanish Ministry of Science and Innovation (PCIN-2017-125, RTI2018-102161 and IJCI-2017-34110), and the Research Council of Norway (Grant no. 272797 "GoPHy MiCO") through the M-ERA.NET Joint Call 2016. The authors acknowledge the skilful assistance from the staff of the Swiss-Norwegian Beamline (SNBL) at the European Synchrotron Radiation Facility (ESRF), Grenoble, France. Dr. Cheng Li at POWGEN, SNS, Oak Ridge, US and Dr. Chiu C. Tang at beamline I11 at Diamond, Didcot, UK are gratefully acknowledged for PND and SR-PXD measurements, respectively.
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Tipo:
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Artículo
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