
- RIUMA Principal
- Investigación
- Química Inorgánica, Cristalografía y Mineralografía - (QICM)
- QICM - Artículos
- Listar QICM - Artículos por autor
Listar QICM - Artículos por autor "Ramírez-Losilla, Enrique"
Mostrando ítems 1-20 de 30
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A novel multilaminated composite cathode for solid oxide fuel cells.
Dos-Santos-Gómez, Lucía; Porras-Vázquez, José Manuel; Martín-Jiménez, Francisco de Paula
; Ramos-Barrado, José Ramón
; Ramírez-Losilla, Enrique
; Marrero-López, David
[et al.] (Elsevier, 2019-05-28)
A novel electrode architecture consisting in alternating layers of La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) and Ce0.9Gd0.1O1.95 (CGO) is prepared for the first time by spray-pyrolysis deposition and investigated as cathode material ... -
A review on recent advances and trends in symmetrical electrodes for solid oxide cells.
Zamudio-García, Javier; Caizán-Juanarena, Leire; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique
; Marrero-López, David
(Elsevier, 2021-12-04)
Symmetrical solid oxide cells (SSOCs) with identical air and fuel electrodes have gained significant scientific interest in the last decade because they offer several advantages over conventional cell configurations. ... -
Doping effects on the structure and electrical properties of La2Ce2O7 proton conductors.
Zamudio-García, Javier; Dos-Santos-Gómez, Lucía; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique
; Marrero-López, David
(Elsevier, 2020-01-01)
Recent studies have reported that the conductivity of La2Ce2O7 proton conductors is improved by aliovalent doping, despite the high concentration of oxygen vacancies in the pristine material. In this study, we provide ... -
Effect of calcium sulfate source on the hydration of calcium sulfoaluminate eco-cement
García-Maté, Marta; Gómez-de-la-Torre, María de los Ángeles; León-Reina, Laura; Ramírez-Losilla, Enrique
; García-Aranda, Miguel Ángel
; Santacruz-Cruz, María 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 ... -
Efficient symmetrical electrodes based on LaCrO3 via microstructural engineering.
Zamudio-García, Javier; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique
; Marrero-López, David
(Elsevier, 2021-09-30)
Novel nanostructured electrodes, La0.98Cr0.75B0.25O3δ (B = Mn, Fe, Ti and Cu), are prepared by a single spraypyrolysis deposition method directly on the electrolyte and a porous Ce0.9Gd0.1O1.95 (CGO) scaffold. ... -
Enhancing the Electrochemical Performance in Symmetrical Solid Oxide Cells through Nanoengineered Redox-Stable Electrodes with Exsolved Nanoparticles
Zamudio-García, Javier; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique
; Marrero-López, David
(American Chemical Society, 2023-12-25)
Symmetrical solid oxide cells (SSOCs) have recently gained significant attention for their potential in energy conversion due to their simplified cell configuration, cost-effectiveness, and excellent reversibility. However, ... -
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.; Pérez-Colodrero, Rosario Mercedes; Bazaga-García, Montse; Vasileiou, Antonia; Papadaki, Maria; Olivera-Pastor, Pascual
; Infantes-Molina, Antonia
; Ramírez-Losilla, Enrique
; Mezei, Gellert; Cabeza-Díaz, 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-Throughput Synthesis of Pillared-Layered Magnesium Tetraphosphonate Coordination Polymers: Framework Interconversions and Proton Conductivity Studies
Pérez-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
; Ramírez-Losilla, Enrique
; Olivera-Pastor, Pascual
; Demadis, Konstantinos D.; Cabeza-Díaz, 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 ... -
Highly oriented and fully dense CGO films prepared by spray-pyrolysis and different precursor salts.
Dos-Santos-Gómez, Lucía; Zamudio-García, Javier; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique
; Marrero-López, David
(Elsevier, 2020-03-19)
CeO2–based thin films are prepared by spray-pyrolysis deposition from different aqueous precursor solutions containing nitrate, chloride or acetate salts. The morphology and orientation growth strongly depends on the precursor ... -
Impact of the lanthanide size on the polymorphism and electrical properties of Ln5.4MoO11.1 (Ln = Nd, Sm and Gd)
Rubio-Vives, Rafael; Porras-Vázquez, José Manuel; Dos-Santos-Gómez, Lucía; Zamudio-García, Javier; Infantes-Molina, Antonia
; Canales-Vázquez, J.; Marrero-López, David
; Ramírez-Losilla, Enrique
[et al.] (Elsevier, 2023)
Mixed proton-electronic conductors are of great interest for high temperature electrochemical devices, such as hydrogen separation membranes. In this contribution, ceramics with composition Ln5.4MoO11.1 (Ln = Nd, Sm and ... -
Improving the efficiency of layered perovskite cathodes by microstructural optimization
Dos Santos-Gómez, Lucía; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique
; Marrero-López, David
(Royal Society of Chemistry, 2017)
Low-temperature solid oxide fuel cells require the use of cathodes with improved performance. In this context, microstructural optimization is fundamental in order to obtain more efficient and stable materials. However, ... -
In-situ early-age hydration study of sulfobelite cements by synchrotron powder diffraction
Álvarez-Pinazo, Gema; Cuesta-García, Ana María; García-Maté, Marta; Santacruz-Cruz, María Isabel; Ramírez-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 Bi1.5Y0.5O3 Active Layer on the Performance of Nanostructured La0.8Sr0.2MnO3 Cathode.
Zamudio-García, Javier; Albarrán-Aroca, Nerea; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique
; Marrero-López, David
(MDPI, 2020-09-01)
The efficiency of solid oxide fuel cell cathodes can be improved by microstructural optimization and using active layers, such as doped bismuth oxides. In this work, Bi1.5Y0.5O3 (BYO) films are prepared by spray-pyrolysis ... -
Influence of Proton Conducting Cations on the Structure and Properties of 2D Anilate-Based Magnets
Palacios Corella, Mario; Fernández Espejo, Alejandro; Bazaga-García, Montse; Ramírez-Losilla, Enrique; Cabeza-Díaz, 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 ... -
Investigation of PO4 3- oxyanion-doping on the properties of CaFe0.4Ti0.6O3 d for potential application as symmetrical electrodes for SOFCs
Dos-Santos-Gómez, Lucía; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique
; Marrero-López, David
; Slater, Peter (Elsevier, 2020)
CaTi0.6-xFe0.4PxO3-d (0 x 0.075) perovskite series are investigated as potential symmetrical electrodes for SOFCs. Pure phase compounds with a cubic perovskite structure (s.g. Pm3m) are obtained for x 0.025, while ... -
Layered Lanthanide Sulfophosphonates and Their Proton Conduction Properties in Membrane Electrode Assemblies
Bazaga-García, Montse; Salcedo, Inés R.; Pérez-Colodrero, Rosario Mercedes; Xanthopoulos, Konstantinos; Villemin, Didier; Stock, Norbert; López-González, Mar; Del Río, Carmen; Ramírez-Losilla, Enrique
; Cabeza-Díaz, 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 ... -
LSCF-CGO nanocomposite cathodes deposited in a single step by spraypyrolysis.
Dos-Santos-Gómez, Lucía; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique
; Martín-Jiménez, Francisco de Paula
; Ramos-Barrado, José Ramón
; Marrero-López, David
[et al.] (Elsevier, 2018-01-01)
La0.6Sr0.4Co0.2Fe0.8O3-δ-Ce0.9Gd0.1O1.95 (LSCF-CGO) nanostructured cathodes with different LSCF-content are prepared in a single step by spray-pyrolysis deposition, simplifying notably the fabrication process compared ... -
Metal-Doping of La5.4MoO11.1 Proton Conductors: Impact on the Structure and Electrical Properties.
López Vergara, Adrián; Porras-Vázquez, José Manuel; Vøllestad, Einar; Canales-Vázquez, J.; Ramírez-Losilla, Enrique
; Marrero-López, David
[et al.] (American Chemical Society, 2018-10-03)
La5.4MoO11.1 proton conductors with different metal doping (Ca2+, Sr2+, Ba2+, Ti4+, Zr4+, and Nb5+) have been prepared and structurally and electrically characterized. Different polymorphs are stabilized depending on ... -
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; Ramírez-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. ... -
Nanostructured BaCo0.4Fe0.4Zr0.1Y0.1O3- Cathodes with Di erent Microstructural Architectures
Dos-Santos-Gómez, Lucía; Zamudio-García, Javier; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique
; Marrero-López, David
(MDPI, 2020-05-30)
Lowering the operating temperature of solid oxide fuel cells (SOFCs) is crucial to make this technology commercially viable. In this context, the electrode e ciency at low temperatures could be greatly enhanced by ...