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dc.contributor.author
Moreno Botello, Zulma L.  
dc.contributor.author
Montenegro Hernández, Alejandra  
dc.contributor.author
Mogni, Liliana Verónica  
dc.contributor.author
Gauthier, Gilles H.  
dc.date.available
2022-12-19T14:55:58Z  
dc.date.issued
2021-01  
dc.identifier.citation
Moreno Botello, Zulma L.; Montenegro Hernández, Alejandra; Mogni, Liliana Verónica; Gauthier, Gilles H.; Study of the oxygen reduction reaction on pure and Zr-doped YMnO3+δ SOFC electrode; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 365; 1-2021; 1-31  
dc.identifier.issn
0013-4686  
dc.identifier.uri
http://hdl.handle.net/11336/181748  
dc.description.abstract
The effect of Zr-doping on the novel SOFC cathode YMnO3 and its O2-Reduction Reaction (ORR) was studied using electrochemical impedance spectroscopy (EIS) as a function of temperature (500 < T < 800 °C) and the oxygen partial pressure (10−4 < pO2 < 1 atm). EIS technique allows identifying three processes controlling the ORR for each electrode, differentiated by their characteristic frequency, activation energies and pO2 dependence. High frequency contribution, only observed at 600°C for both electrodes, was attributed to oxygen ion transfer trough the electrode/electrolyte interface. In both electrodes, the Intermediate frequency contribution was described by a Gerischer impedance, related to a co-limiting process between oxygen ion diffusion and a surface process. However, whereas the EIS characteristics for YMnO3 can be explained by a surface process controlled by the electron transfer from oxide to O-adsorbed, it seems related for Y0.9Zr0.1MnO3 to the probability of finding a second free-surface site near to a diatomic intermediated for the O2 dissociation. These differences are in agreement with the improvement of the electrical properties when YMnO3 is doped with Zr. The low frequency contribution became important as pO2 decreased and temperature increased, and its characteristics would indicate a secondary surface process, co-limited with O2 gas diffusion for Y0.9Zr0.1MnO3 porous electrode.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Pergamon-Elsevier Science Ltd  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/  
dc.subject
CATHODE, ZR-DOPED YTTRIUM MANGANITE  
dc.subject
ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY  
dc.subject
SOLID OXIDE FUEL CELLS  
dc.subject.classification
Cerámicos  
dc.subject.classification
Ingeniería de los Materiales  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Study of the oxygen reduction reaction on pure and Zr-doped YMnO3+δ SOFC electrode  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-10-04T14:44:38Z  
dc.journal.volume
365  
dc.journal.pagination
1-31  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Moreno Botello, Zulma L.. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Universidad Industrial Santander; Colombia  
dc.description.fil
Fil: Montenegro Hernández, Alejandra. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Unidad Ejecutora Instituto de Nanociencia y Nanotecnologia. Unidad Ejecutora Instituto de Nanociencia y Nanotecnologia - Nodo Bariloche | Comision Nacional de Energia Atomica. Unidad Ejecutora Instituto de Nanociencia y Nanotecnologia. Unidad Ejecutora Instituto de Nanociencia y Nanotecnologia - Nodo Bariloche.; Argentina  
dc.description.fil
Fil: Mogni, Liliana Verónica. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Unidad Ejecutora Instituto de Nanociencia y Nanotecnologia. Unidad Ejecutora Instituto de Nanociencia y Nanotecnologia - Nodo Bariloche | Comision Nacional de Energia Atomica. Unidad Ejecutora Instituto de Nanociencia y Nanotecnologia. Unidad Ejecutora Instituto de Nanociencia y Nanotecnologia - Nodo Bariloche.; Argentina  
dc.description.fil
Fil: Gauthier, Gilles H.. Universidad Industrial Santander; Colombia  
dc.journal.title
Electrochimica Acta  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0013468620317254  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.electacta.2020.137332