Listar por autor "Ramirez-Losilla, Enrique"
Mostrando ítems 1-20 de 36
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Ce0.8Gd0.2O2‐δ / La0.6Sr0.4CoO3 Heterostructures prepared by pulsed laser deposition
Dos Santos-Gómez, Lucía; Porras-Vázquez, José Manuel; Ramirez-Losilla, Enrique
; Marrero-López, David (2018-09-14)
Oxide interfaces have received greater attention due to the possibility to obtain properties that are very different from bulk materials. Due to the wide variety of electronic and ionic phenomena than can be detected at ... -
Compatibility and performance of SOFCs based on lanthanum tungstates
Dos Santos-Gómez, Lucía; Porras-Vázquez, José Manuel; Zayas-Rey, María José; Ramirez-Losilla, Enrique; Marrero-López, David (2015-07-10)
Rare-earth tungstates with general composition “Ln6WO12” have attracted great attention in last few years due to their relatively high mixed proton-electron conductivity [1, 2]. One of the main ad-vantages of these ... -
Cristaloquímica y Conductividad de ion óxido en Oxo-cuspidinas
(Universidad de Málaga, Servicio de Publicaciones, 2006)El trabajo de investigación se ha centrado en el estudio (preparación y caracterización estructural y eléctrica) de las oxo-cuspidinas con fórmula general A4(M2O71)O2 (A=La, Nd, Sm, Gd; M=Ga, Al) como posibles materiales ... -
Desarrollo y control microestructural en materiales para pilas de combustible de óxidos sólidos
(UMA Editorial, 2018-10-17)Las pilas de combustible de óxidos sólidos (SOFCs) son una de las alternativas más prometedoras para producir energía eléctrica de manera eficiente y respetuosa con el medio ambiente. Durante la fabricación de una SOFC es ... -
Effect of calcium sulfate source on the hydration of calcium sulfoaluminate eco-cement
García-Maté, Marta; Gomez-de-la-Torre, Maria de los Angeles; León-Reina, Laura; Ramirez-Losilla, Enrique; García-Aranda, Miguel Ángel; Santacruz-Cruz, Maria Isabel[et al.] (2014)
The availability of cements, including eco-cements, with tailored mechanical properties is very important for special applications in the building industry. Here we report a full study of the hydration of calcium sulfoaluminate ... -
From light to heavy alkali metal tetraphosphonates (M = Li, Na, K, Rb, Cs): cation size-induced structural diversity and waterfacilitated proton conductivity
Salcedo, Inés R.; Perez-Colodrero, Rosario Mercedes; Bazaga-García, Montse; Vasileiou, Antonia; Papadaki, Maria; Olivera-Pastor, Pascual; Infantes-Molina, Antonia; Ramirez-Losilla, Enrique; Mezei, Gellert; Cabeza-Diaz, Aurelio; Demadis, Konstantinos D.[et al.] (The Royal Society of Chemistry, 2018-09)
A family of alkali metal-based frameworks containing the tetraphosphonate ligand hexamethylenediamine- N,N,N′,N′-tetrakisIJmethylenephosphonic acid), HDTMP, is reported. A cation size-induced structural diversity, from ... -
High efficiency cathodes for SOFCs prepared by spray-pyrolysis
Dos Santos-Gómez, Lucía; Ramirez-Losilla, Enrique; Marrero-López, David (2015-07-10)
In recent years, lowering the operating temper-ature of the Solid Oxide Fuel Cells (SOFCs) to the intermediate temperature range (500-700 ºC) has become the main challenge for this technology. The electrolyte resistance ... -
High-Throughput Synthesis of Pillared-Layered Magnesium Tetraphosphonate Coordination Polymers: Framework Interconversions and Proton Conductivity Studies
Perez-Colodrero, Rosario Mercedes; Salcedo, Inés R.; Bazaga-García, Montse; Barouda, Eleni; Papadaki, Maria; Papathanasiou, Konstantinos E.; Hernández Alonso, Daniel; Rius, Jordi; García-Aranda, Miguel Ángel; Ramirez-Losilla, Enrique; Olivera-Pastor, Pascual; Demadis, Konstantinos D.; Cabeza-Diaz, Aurelio[et al.] (MDPI, www.mdpi.com/journal/inorganics, 2018-09-11)
Novel pillared-layered framework materials were synthesized by high-throughput or microwave-assisted methodology that contain Mg2+ and the zwitterionic linker HDTMP (hexamethylenediamine-N,N,N0,N0-tetrakis(methylenephosphonic ... -
In-situ early-age hydration study of sulfobelite cements by synchrotron powder diffraction
Álvarez-Pinazo, Gema; Cuesta-Garcia, Ana Maria; García-Maté, Marta; Santacruz-Cruz, Maria Isabel; Ramirez-Losilla, Enrique; Sanfélix, Susana G; Fauth, François[et al.] (Karen Scrivener, 2014)
Eco-friendly belite calcium sulfoaluminate (BCSA) cement hydration behavior is not yet well understood. Here,we report an in-situ synchrotron X-ray powder diffraction study for the first hours of hydration of BCSA ... -
Influence of Nb-doping on the structural and electrical properties of lanthanum molybdates, La5.4MoO11.1
López-Vergara, Adrián; Porras-Vázquez, José Manuel; Vollestad, Einar; Canales-Vázquez, J.; Ramirez-Losilla, Enrique; Marrero-López, David[et al.] (2018-06-28)
Nowadays, hydrogen is receiving a great deal of attention as an energy carrier. Commonly, it is obtained by hydrocarbons reforming, such as natural gas, coal and biomass. However, the resulting hydrogen needs to be purified ... -
Influence of Proton Conducting Cations on the Structure and Properties of 2D Anilate-Based Magnets
Palacios Corella, Mario; Fernández Espejo, Alejandro; Bazaga-García, Montse; Ramirez-Losilla, Enrique; Cabeza-Diaz, Aurelio; Clemente-León, Miguel; Coronado, Eugenio[et al.] (ACS publications, 2017-11-01)
The syntheses, structures, magnetic, and proton conductivity properties of a family of bimetallic anilate-based compounds with inserted alkylammonium cations are presented. The structures of (Me2NH2)[MnIICrIII(Br2An)3]·2H2O ... -
La0.8Sr0.2MnO3-d-based nanocomposite functional layers for improved cathode efficiency in SOFCs
Caizán Juanarena, Leire; Zamudio-García, Javier; Porras-Vázquez, José Manuel; Ramirez-Losilla, Enrique; Marrero-López, David (2022)
Solid Oxide Fuel Cells (SOFC) are efficient electrochemical devices that are able to convert chemical energy in the form of fuels into electricity, but at low operating temperatures they are mainly limited by the high ... -
LaCrO3–CeO2-Based Nanocomposite Electrodes for Efficient Symmetrical Solid Oxide Fuel Cells
Zamudio-García, Javier; Porras-Vazquez, Jose Manuel; Ramirez-Losilla, Enrique; Marrero-López, David (2022-04-05)
La0.98Cr0.75Mn0.25O3−δ–Ce0.9Gd0.1O1.95 (LCM-CGO) nanocomposite layers with different LCM contents, between 40 and 60 wt %, are prepared in a single step by a spray-pyrolysis deposition method and evaluated as both air and ... -
Lanthanum Molybdates: a comprehensive study for hydrogen separation membranes
(UMA Editorial, 2023)En esta Tesis doctoral, los materiales La6−xMoO12−δ (0 ≤ x ≤ 0.8) se investigan como una nueva familia de conductores cerámicos de protones. Se obtienen diferentes fases polimórficas con estructura romboédrica y cúbica, ... -
Layered Lanthanide Sulfophosphonates and Their Proton Conduction Properties in Membrane Electrode Assemblies
Bazaga-García, Montse; Salcedo, Inés R.; Perez-Colodrero, Rosario Mercedes; Xanthopoulos, Konstantinos; Villemin, Didier; Stock, Norbert; López-González, Mar; del Río, Carmen; Ramirez-Losilla, Enrique; Cabeza-Diaz, Aurelio; Demadis, Konstantinos D.; Olivera-Pastor, Pascual[et al.] (ACS publications, 2019-11-07)
Metal phosphonates containing acidic groups exhibit a wide range of proton conduction properties, which may enhance the performance of membrane electrode assemblies (MEAs). In this work, focus is placed on proton conduction ... -
Modification of the Microstructure and Transport Properties of La2CuO4−δ Electrodes via Halogenation Routes
Dos Santos-Gómez, Lucía; Zamudio-García, Javier; Porras-Vázquez, José Manuel; Ramirez-Losilla, Enrique; Marrero-López, David (IOAP-MPDI, 2022-06-16)
dos Santos-Gómez L, Zamudio-García J, Porras-Vázquez JM, R. Losilla E, Marrero-López D. Modification of the Microstructure and Transport Properties of La2CuO4−δ Electrodes via Halogenation Routes. Processes. 2022; 10(6):1206. ... -
Nanocrystalline cathodes for PC-SOFCs based on BCZY
Dos Santos-Gómez, Lucía; Zea-Garcia, Jesus D.; Porras-Vázquez, José Manuel; Marrero-López, David; Ramirez-Losilla, Enrique (2016-09-27)
Perovskites based on BaCeO3-δ exhibit the highest proton conductivity among this class of materials, however, they are susceptible to hydration and carbonation in presence of water vapor and CO2 [1]. In contrast, the ... -
Nanostructured composites as active layer to boost cathode performance in Solid Oxide Fuel Cells
Caizán Juanarena, Leire; Zamudio-García, Javier; Porras-Vázquez, José M.; Ramirez-Losilla, Enrique; Marrero-López, David (2022-04)
Since the efficiency of Solid Oxide Fuel Cells (SOFCs) is largely limited by the high polarization resistance of the cathode, several strategies have been proposed to enhance the electrochemical activity of such electrodes. ... -
New multifunctional sulfonato-containing metal phosphonates proton conductors
Salcedo, Inés R.; Bazaga-García, Montse; Perez-Colodrero, Rosario Mercedes; Xanthopoulos, Konstantinos; Demadis, Konstantinos D.; Stock, Norbert; Cabeza-Diaz, Aurelio; Ramirez-Losilla, Enrique; Olivera-Pastor, Pascual[et al.] (2018-10-01)
Anchoring of acidic functional groups to organic linkers acting as ligands in metal phosphonates has been demonstrate to be a valid strategy to develop new proton conductor materials, which exhibit tunable properties and ...