RT Journal Article
T1 New insights into the GdBaCo2O5+d material: Crystal structure, electrical and electrochemical properties
A1 Muñoz Gil, Daniel
A1 Pérez-Coll, Domingo
A1 Peña Martínez, Juan
A1 García Martín, Susana
AB Selected area electron diffraction (SAED) and high resolution transmission electron microscopy (HRTEM) studies reveal that the crystal structure and microstructure of GdBaCo2O5-d are highly influenced by the oxygen stoichiometry. In addition to layered-type ordering of the Ba and Gd atoms along the c-direction of the structure and location of anion vacancies within the (GdO)x planes giving a ap x ap x 2ap unit cell, two different perovskite related superstructures are observed. A superstructure with ap x 3ap x 2ap unit cell, probably due to extra ordering of the anion vacancies within the (GdO)x planes is formed for d values close to 0.33 and a superstructure with O2ap x O2bp x 2ap unit cell associated to tilting of the CoO6 octahedra appears for the compound with d values close to 1. Domain formation with perpendicular orientations of the unit cell occurs in crystals with orthorhombic symmetry of the structure. Physical properties of the aforementioned material, which is well known as a potential candidate of cathode for intermediate temperature solid oxide fuel cells, are likely to be strongly affected by its oxygen stoichiometry and therefore by its crystal structure and microstructure.
PB Elsevier
SN 0378-7753
YR 2014
FD 2014
LK https://hdl.handle.net/20.500.14352/94339
UL https://hdl.handle.net/20.500.14352/94339
LA eng
NO Muñoz-Gil, Daniel, et al. «New Insights into the GdBaCo2O5+δ Material: Crystal Structure, Electrical and Electrochemical Properties». Journal of Power Sources, vol. 263, octubre de 2014, pp. 90-97. https://doi.org/10.1016/j.jpowsour.2014.04.019.
NO Ministerio de Educación, Formación Profesional y Deportes (España)
NO Comunidad Autónoma de Madrid
DS Docta Complutense
RD 30 jun 2025