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Listar por autor "Solis Díaz, Cecilia"

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Adjusting the conduction properties of La0.995Ca0.005NbO4 by doping for proton conducting fuel cells electrode operation

Solis Díaz, Cecilia; Serra Alfaro, José Manuel (Elsevier, 2011-05-19)

[EN] Structural characterization and transport properties of A- (Ce and Pr) and B-site (Mn) doped La0.995Ca0.005- NbO4 (-) (delta) (LCN) have been investigated. Conductivity data have been analyzed in the temperature range ...
Boosting the oxygen reduction reaction mechanisms in IT-SOFC cathodes by catalytic functionalization

Navarrete Algaba, Laura; Solis Díaz, Cecilia; Serra Alfaro, José Manuel (Royal Society of Chemistry, 2015)

A robust LSM-GDC composite was used as a backbone electrode for the infiltration of different catalysts, dispersed as oxide nanoparticles after firing. Catalyst candidates were screened using symmetric cells supported on ...
Catalytic Surface Promotion of Composite Cathodes in Protonic Ceramic Fuel Cells

Solis Díaz, Cecilia; Navarrete Algaba, Laura; Bozza, Francesco; Bonanos, Nikolaos; Serra Alfaro, José Manuel (Wiley, 2015-08)

[EN] Composite cathodes based on an electronic conductor and a protonic conductor show advantages for protonic ceramic fuel cells. In this work, the performance of a La5.5WO11.25-delta/La0.8Sr0.2MnO3+delta (LWO/LSM) composite ...
Catalytic surface promotion of highly active La0.85Sr0.15Cr0.8Ni0.2O3-delta anodes for La5.6WO11.4-delta based proton conducting fuel cells

Solis Díaz, Cecilia; Balaguer Ramirez, Maria; Bozza, F.; Bonanos, Nikos; Serra Alfaro, José Manuel (Elsevier, 2014)

[EN] La0.85Sr0.15CrO3-delta (LSC), La0.85Sr0.15Cr0.8Ni0.2O3-delta (LSCN) and LSCN infiltrated with Ni nanoparticles were tested as anodes for symmetrical cells based on La5.6WO11.4-delta (LWO) protonic electrolyte. These ...
Cathode materials for La0.995Ca0.005NbO4 proton ceramic electrolyte

Kravchyk, K.V.; Quarez, E.; Solis Díaz, Cecilia; Serra Alfaro, José Manuel; Joubert, O. (Elsevier, 2011-10)

[EN] The study presents the chemical and mechanical compatibility of the proton conducting electrolyte La0.995Ca0.005NbO4 (LCNO) with the LSM, LSCM and BSCF cathodes and the electrochemical performance of symmetrical cells ...
Development and understanding of La0.85Sr0.15Cr1-xNixO3-delta anodes for La5.6WO11.4-delta-based Proton Conducting Solid Oxide Fuel Cells

Solis Díaz, Cecilia; Navarrete Algaba, Laura; Balaguer, María; Serra Alfaro, José Manuel (Elsevier, 2014-07-15)

[EN] Porous electrodes based on the system La0.85Sr0.15Cr1-xNixO3-delta (x = 0.1 and 0.2) have been investigated as anodes for proton conducting solid oxide fuel cells based on the La5.6WO11.4-delta (LWO) electrolyte ...
Development of CO2 Protective Layers by Spray Pyrolysis for Ceramic Oxygen Transport Membranes

García Torregrosa, Iván; Lobera González, Maria Pilar; Solis Díaz, Cecilia; Atienzar Corvillo, Pedro Enrique; Serra Alfaro, José Manuel (Wiley-VCH Verlag, 2011)

[EN] Ceramic mixed ionic¿electronic conducting (MIEC) membranes enable very selective oxygen separation from air at high temperatures. Two major potential applications of oxygen-transport membranes are: i) oxygen production ...
Electrochemical properties of composite cathodes for La0.995Ca0.005NbO4-delta-based proton conducting fuel cells

Solis Díaz, Cecilia; Vert Belenguer, Vicente Bernardo; Fabuel Robledo, María; Serra Alfaro, José Manuel (Elsevier, 2011-11-15)

[EN] The electrochemical properties of mixed-conducting ceramic-ceramic (cer-cer) composites for proton-conducting solid oxide fuel cells (PC-SOFCs) based on La0.995Ca0.005NbO4-delta (LCN) have been investigated. Different ...
Electrochemical properties of composite fuel cell cathodes for La5.5WO12−δ proton conducting electrolytes

Solis Díaz, Cecilia; Navarrete Algaba, Laura; Roitsch, Stefan; Serra Alfaro, José Manuel (Royal Society of Chemistry, 2012)

[EN] New composite cathodes for proton conducting solid oxide fuel cells (PC-SOFCs) based on the novel La5.5WO12-delta (LWO) electrolyte have been developed. First the applicability of LWO as a protonic electrolyte has ...
Electrochemical properties of PSFC-BCYb composites as cathodes for proton conducting solid oxide fuel cells

Vert Belenguer, Vicente Bernardo; Solis Díaz, Cecilia; Serra Alfaro, José Manuel (Wiley-VCH Verlag, 2010-08-17)

[EN] The electrochemical properties of mixed conducing ceramic¿ceramic composites for proton conducting fuel cells have been investigated. Different ratios of Pr0.58Sr0.4Fe0.8Co0.2O3¿¿¿BaCe0.9Yb0.1O3¿¿ composites have been ...
Engineering microstructure and redox properties in the mixed conductor Ce0.9Pr0.1O2-d+Co 2 mol %

Balaguer Ramírez, María; Solis Díaz, Cecilia; Roitsch, Stefan; Serra Alfaro, José Manuel (Royal Society of Chemistry, 2014)

10% Praseodymium doped ceria exhibits a combination of mixed ionic and electronic conductivity, redox catalytic properties and chemical compatibility with water and carbon dioxide at high temperatures. Minor additions of ...
Epitaxial Films of the proton-conducting Ca-doped LaNbO4 material and study of their charge transport properties

Cavallaro, Andrea; Solis Díaz, Cecilia; Garcia, Pablo R.; Ballesteros, Belén; Serra Alfaro, José Manuel; Santiso, Jose L. (Elsevier, 2012-05-28)

[EN] Ca-doped LaNbO4 (LCNO) material has shown outstanding stability in harsh environments in combination with moderate proton-conductivity in polycrystalline samples at intermediate temperatures below 800 degrees C under ...
Evaluation of Er Doped CeO2-delta as Oxygen Transport Membrane

Balaguer Ramirez, Maria; Solis, Cecilia; Escolástico Rozalén, Sonia; García-Fayos, Julio; Serra Alfaro, José Manuel (MDPI AG, 2022-02)

[EN] Ceria based materials are robust candidates for a range of applications involving redox reactions and high oxygen activity. The substitution of erbium in the ceria lattice introduces extrinsic oxygen vacancies. Further ...
Fast Oxygen Separation Through SO2- and CO2-Stable Dual-Phase Membrane Based on NiFe2O4-Ce0.8Tb0.2O2-delta

Balaguer Ramírez, María; García Fayos, Julio; Solis Díaz, Cecilia; Serra Alfaro, José Manuel (American Chemical Society, 2013-12-24)

Composite membranes with enhanced oxygen permeability and unprecedented stability in oxyfuel-like gas environments are reported. Specifically, 60 vol% NiFe2O4 - 40 vol% Ce0.8Tb0.2O2-delta (NFO-CTO) composite has been ...
Functional properties of La0.99X0.01Nb0.99Al0.01O4−δ and La0.99X0.01Nb0.99Ti0.01O4−δ proton conductors where X is an alkaline earth cation

Ivanova, Mariya E; Meulenberg, Wilhelm A.; Palisaitis, Justinas; Sebold, Doris; Solis Díaz, Cecilia; Ziegner, Mirko; Serra Alfaro, José Manuel; Mayer, Joachim; Hänsel, Michael; Guillon, Olivier (Elsevier, 2015-04)

Lanthanum niobates with general formulas of La0.99X0.01Nb0.99Al0.01O4−δ and La0.99X0.01Nb0.99Ti0.01O4−δ (X = Mg, Ca, Sr or Ba) were synthesized via the conventional solid state reaction. Specimens with relative density ...
High performance anodes with tailored catalytic properties for La5.6WO11.4-d; based proton conducting fuel cells

Balaguer Ramírez, María; Solis Díaz, Cecilia; Bozza, F.; Bonanos, N.; Serra Alfaro, José Manuel (Royal Society of Chemistry, 2013)

This work shows the development of anodes based Sr-doped LaCrO3 (LSC) for La5.6WO11.4-d;-based proton conducting fuel cells. The electrode was improved by considering the operation limitations of the LSC material, which ...
Hydrogen permeation through Nd-doped La6WO12 membranes

Escolástico Rozalén, Sonia; Solis Díaz, Cecilia; Serra Alfaro, José Manuel (Elsevier, 2012-05-28)

[EN] This work presents the preparation and characterization of the hydrogen permeation of a mixed protonic-electronic conducting membrane based on the doped system La6WO12, in this instance, (La5/6Nd1/6)(5.5)WO12-delta. ...
Hydrogen separation and stability study of ceramic membranes based on the system Nd5LnWO12

Escolástico Rozalén, Sonia; Solis Díaz, Cecilia; Serra Alfaro, José Manuel (Elsevier, 2011-09)

This contribution presents the preparation, permeation and stability study of mixed protonic-electronic conducting membranes based on the system Nd(5)LnWO(12). The tung-states Ln(6)WO(12) are proton conducting crystalline ...
Hydrogen separation in La5.5WO11.25-delta membranes

Escolástico Rozalén, Sonia; Solis Díaz, Cecilia; Scherb, Tobias; Schumacher, Gerhard; Serra Alfaro, José Manuel (Elsevier, 2013-10-01)

Tungstates Ln(6)WO(12) are proton conducting crystalline materials which show significant mixed protonic and electronic conductivity and stability in moist CO2 environments. These materials are promising candidates for ...
Improvement of transport properties and hydrogen permeation of chemically-stable proton conducting oxides bases on the system BaZr1-x-yYxMyO3-δ

Escolástico Rozalén, Sonia; Ivanova, Mariya; Solis Díaz, Cecilia; Roitsch, Stefan; Meulenberg, Wilhem Albert; Serra Alfaro, José Manuel (Royal Society of Chemistry, 2012)

[EN] The structural and transport properties as well as the chemical stability of a series of proton-conducting oxides based on yttrium-doped barium zirconate were investigated. Specifically, Pr-, Fe- and Mn-doped ...