RT Journal Article
T1 Eu2SrCo1.5Fe0.5O7 a new promising Ruddlesden– Popper member as a cathode component for intermediate temperature solid oxide fuel cells
A1 Boulahya, Khalid
A1 Muñoz Gil, Daniel
A1 Gómez Herrero, Adrián
A1 Azcondo, M. Teresa
A1 Amador, Ulises
AB A new oxide of the Ruddlesden–Popper series in the (Eu,Sr)n+1(Co,Fe)nO3n+1 system has been isolated and structurally characterized. X-ray diffraction and electron microscopy show that polycrystalline Eu2SrCo1.5Fe0.5O7 constitutes the n = 2 member of a homologous series, the essential feature of which is the existence of two connected Co/Fe octahedral layers with a perovskite-like structure, linked by an EuO rock-salt like layer. Random distributions of 3d-metals in the perovskite blocks and interstitial and oxygen vacancies in the rock-salt layers (anti Frenkel defects) are observed by electron microscopy. Such facts are commonly associated with high electronic conduction and ionic conductivity. The electrochemical study shows that the area-specific resistance of this compound is 0.26 U cm2 at 700 ºC in air, a value which is comparable to those of the best state-of-the-art Ruddlesden–Popper materials used as cathodes in intermediate temperature solid oxide fuel cells.
PB Royal Society of Chemistry
YR 2019
FD 2019
LK https://hdl.handle.net/20.500.14352/94329
UL https://hdl.handle.net/20.500.14352/94329
LA eng
NO Boulahya, Khalid, et al. «Eu 2 SrCo 1.5 Fe 0.5 O 7 a New Promising Ruddlesden–Popper Member as a Cathode Component for Intermediate Temperature Solid Oxide Fuel Cells». Journal of Materials Chemistry A, vol. 7, n.o 10, 2019, pp. 5601-11. https://doi.org/10.1039/C8TA11254A.
NO European Commission
NO Comunidad de Madrid
DS Docta Complutense
RD 6 oct 2024