Listar por autor "Zamudio-García, Javier"
Mostrando ítems 21-39 de 39
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Modification of the Physical Properties of a Nafion Film Due to Inclusion of n-Dodecyltriethylammonium Cation: Time Effect.
Zamudio-García, Javier; Martínez de Yuso, María V.; Cuevas, Ana Laura; Marrero-López, David
; Benavente-Herrera, Juana (MDPI, 2023-05-30)
This study investigates the effects of modifying commercial Nafion-212 thin films with dodecyltriethylammonium cation (DTA+) on their electrical resistance, elastic modulus, light transmission/reflection and photoluminescence ... -
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 ... -
Nanostructured composites as active layer to boost cathode performance in Solid Oxide Fuel Cells
Caizán-Juanarena, Leire; Zamudio-García, Javier; Porras-Vázquez, José Manuel; Ramírez-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. ... -
Ni-Doped PrBaFe2O5+δ As Symmetrical Electrode for Solid Oxide Cells.
Caizán-Juanarena, Leire; Zamudio-García, Javier; Dos-Santos-Gómez, Lucía; López Vergara, Adrián; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique; Marrero-López, David[et al.] (2023)
The development of new redox stable electrode materials for Solid Oxide Cells (SOFs) have attracted great attention in recent years, since finding suitable compositions to operate efficiently in both fuel cell and electrolyzer ... -
One step synthesis of nanocomposite electrodes for reversible electrochemical cells.
Dos-Santos-Gómez, Lucía; Zamudio-García, Javier; Caizán-Juanarena, Leire; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique; Marrero-López, David[et al.] (2023)
The irregular and seasonal disposition of renewable energy requires advanced devices for energy storage and conversion. Reversible electrochemical cells can address this approach by operating as both electrolyzer and fuel ... -
Perspectives on Cathodes for Protonic Ceramic Fuel Cells.
Mather, Glenn; Muñoz-Gil, Daniel; Zamudio-García, Javier; Porras-Vázquez, José Manuel; Marrero-López, David; Pérez-Coll, Domingo[et al.] (MDPI, 2021-06-09)
Protonic ceramic fuel cells (PCFCs) are promising electrochemical devices for the efficient and clean conversion of hydrogen and low hydrocarbons into electrical energy. Their intermediate operation temperature (500–800 ... -
Recent progress in nanostructured electrodes for solid oxide fuel cells deposited by spray pyrolysis.
Dos-Santos-Gómez, Lucía; Zamudio-García, Javier; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique; Marrero-López, David (Elsevier, 2021-07-21)
Low-temperature solid oxide fuel cells (LT-SOFCs), operating below 650 ◦C, are attracting a great interest due to their long-term stability and potential application for stationary and portable power generation. Much ... -
Relationship between the Structure and Transport Properties in the Ce1−xLaxO2−x/2 System
Zamudio-García, Javier; Porras-Vázquez, José Manuel; Canales-Vázquez, J.; Cabeza-Díaz, Aurelio; Losilla, Enrique R.; Marrero-López, David[et al.] (American Chemical Society, 2019-06-25)
La-doped CeO2 materials have been widely investigated for potential applications in different high-temperature electrochemical devices, such as fuel cells and ceramic membranes for hydrogen production. However, the crystal ... -
Sm0.5Sr0.5CoO3-δ - Ce0.9Sm0.1O1.95 nanocomposites for reversible electrochemical cells.
Dos-Santos-Gómez, Lucía; Zamudio-García, Javier; Caizán-Juanarena, Leire; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique; Marrero-López, David[et al.] (2023)
The generation of electricity through environmentally friendly sources of energy has been one of the main challenges of our society in the last decades. Nevertheless, the irregular and seasonal disposition of renewable ... -
Strategies to obtain efficient symmetrical electrodes for solid oxide cells.
Caizán-Juanarena, Leire; Zamudio-García, Javier; Dos-Santos-Gómez, Lucía; Ramírez-Losilla, Enrique; Porras-Vázquez, José Manuel; Marrero-López, David[et al.] (2023)
There is an increase interest on finding alternative energy technologies that can cope with the current energy demand while mitigating the climate change. Among those technologies, Solid Oxide Cells (SOCs) are promising ... -
Structural analysis and sintering aids effects in La2Ce2O7 proton conductors
Zamudio-García, Javier; Porras-Vázquez, José Manuel; Losilla, Enrique R.; Marrero-López, David (2018-11-15)
Global warming is an important problem that has to be solved without delay. The development of environmental-friendly energy technology is needed to deal with this issue. Solid Oxide Fuel Cells (SOFC) technology has been ... -
Structure and Mixed Proton–Electronic Conductivity in Pr and Nb-Substituted La5.4MoO12−δ Ceramics.
Sánchez Caballero, Abraham; Porras-Vázquez, José Manuel; dos Santos-Gómez, Lucía; Zamudio-García, Javier; Infantes-Molina, Antonia; Canales-Vázquez, J.; Ramírez-Losilla, Enrique; Marrero-López, David[et al.] (MDPI, 2025-01-24)
Lanthanide molybdates are materials known for their mixed proton–ionic conductivity. This study investigates the effects of Pr content and Nb-doping on the crystal structure and electrical properties of the La5.4−xPrxM ... -
Study of mixed molybdates of lanthanum and praseodymium, La5.4-xPrxMo1-yNbyO12-δ, for H2 separation membranes
Sánchez Caballero, Abraham; Porras-Vázquez, José Manuel; Dos-Santos-Gómez, Lucía; Zamudio-García, Javier; Infantes-Molina, Antonia; Marrero-López, David; Ramírez-Losilla, Enrique[et al.] (2024-01)
This research explores the impact of praseodymium and niobium doping on the La5.4-xPrxMo1-yNbyO12- _series (x= 1.35, 2.7, 4.05, 5.4; y= 0, 0.1) as materials with mixed proton-ionic conductivity suitable for hydrogen ... -
Study of mixed Pr/La molybdates, La5.4-xPrxMo1-yNbyO12-δ, for hydrogen separation membranes.
Sánchez Caballero, Abraham; Porras-Vázquez, José Manuel; Dos-Santos-Gómez, Lucía; Zamudio-García, Javier; Infantes-Molina, Antonia; Marrero-López, David; Ramírez-Losilla, Enrique[et al.] (2023)
Lanthanide molybdates, with general formula Ln5.4MoO11.1-, are materials with mixed proton-ionic conductivity that can be used as hydrogen separation membranes. Their symmetry (cubic or rhombohedral) depends on the synthetic ... -
Symmetrical solid oxide fuel cells based on titanate nanocomposite electrodes
Zamudio-García, Javier; Dos-Santos-Gómez, Lucía; Porras-Vázquez, José Manuel; Losilla, Enrique R.; Marrero-López, David (Elsevier, 2022-11-26)
Nanocomposite electrodes of (Sr0.7Pr0.3)0.95TiO3±δ−Ce0.9Gd0.1O1.95 are directly prepared by spray-pyrolysis deposition on Zr0.82Y0.16O1.92 electrolytes and their properties are compared with those obtained by the traditional ... -
Synergic Effect of Metal and Fluorine Doping on the Structural and Electrical Properties of La5.4MoO11.1-Based Materials.
López Vergara, Adrián; Bergillos-Ruíz, Marta; Zamudio-García, Javier; Porras-Vázquez, José Manuel; Canales-Vázquez, J.; Marrero-López, David; Ramírez-Losilla, Enrique[et al.] (American Chemical Society, 2020-01-07)
Cationic and anionic frameworks of La5.4MoO11.1 proton conductors have been modified by means of metal (Ti4+, Zr4+, and Nb5+) and fluorine (F−) doping. This synergic effect leads to the stabilization of highsymmetry and ... -
Tunable electrode architectures for La0.8Sr0.2Fe1-xTixO3-δ based Symmetrical Solid Oxide Fuel Cells.
Zamudio-García, Javier; Porras-Vázquez, José Manuel; Losilla, Enrique R.; Marrero-López, David (2021-07-18)
The efficiency of SOCF electrodes can be improved by optimizing the microstructure from alternative preparation methods, such as infiltration and nanostructured electrodes deposited at low temperature. ... -
Unraveling the Influence of the Electrolyte on the Polarization Resistance of Nanostructured La0.6Sr0.4Co0.2Fe0.8O3-δ Cathodes
Zamudio-García, Javier; Caizán-Juanarena, Leire; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique; Marrero-López, David (IOAP-MPDI, 2022-11-08)
Large variations in the polarization resistance of La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathodes are reported in the literature, which are usually related to different preparation methods, sintering temperatures, and resulting ... -
Vertically Aligned Nanostructures for SOFC applications
Zamudio-García, Javier; Chiabrera, Francesco; Ramírez-Losilla, Enrique; Pryds, Nini; Esposito, Vincenzo; Marrero-López, David[et al.] (2022)
One of the most recent strategies to enhance the electrode performance is preparing composite materials leading to an increase of the triple-phase-boundary (TPB) length. On this way, heteroepitaxial nanocomposite ...