Impact of Phase-Separated Janus-Type Formation on the Reversibility of Multicomponent Exsolved Nanoparticles from Complex Perovskites
[EN] Solid oxide electrochemical cells (SOCs) benefit from exsolution-based electrocatalyst design, where nanoparticles anchored in perovskites enhance stability and activity. Two of the most transformative features of this technology are the ability to engineer multielemental alloy nanoparticles fo...
| Autores: | , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:dnet:riunet______::6db82ffd09c1a00cbca09e5920206612 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/235231 |
| Access Level: | acceso abierto |
| Palabra clave: | Exsolution Alloys Janus nanoparticles SOCs Reversibility |
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| dc.title.none.fl_str_mv |
Impact of Phase-Separated Janus-Type Formation on the Reversibility of Multicomponent Exsolved Nanoparticles from Complex Perovskites |
| title |
Impact of Phase-Separated Janus-Type Formation on the Reversibility of Multicomponent Exsolved Nanoparticles from Complex Perovskites |
| spellingShingle |
Impact of Phase-Separated Janus-Type Formation on the Reversibility of Multicomponent Exsolved Nanoparticles from Complex Perovskites Delgado-Galicia, Blanca|||0009-0004-4655-5789 Exsolution Alloys Janus nanoparticles SOCs Reversibility |
| title_short |
Impact of Phase-Separated Janus-Type Formation on the Reversibility of Multicomponent Exsolved Nanoparticles from Complex Perovskites |
| title_full |
Impact of Phase-Separated Janus-Type Formation on the Reversibility of Multicomponent Exsolved Nanoparticles from Complex Perovskites |
| title_fullStr |
Impact of Phase-Separated Janus-Type Formation on the Reversibility of Multicomponent Exsolved Nanoparticles from Complex Perovskites |
| title_full_unstemmed |
Impact of Phase-Separated Janus-Type Formation on the Reversibility of Multicomponent Exsolved Nanoparticles from Complex Perovskites |
| title_sort |
Impact of Phase-Separated Janus-Type Formation on the Reversibility of Multicomponent Exsolved Nanoparticles from Complex Perovskites |
| dc.creator.none.fl_str_mv |
Delgado-Galicia, Blanca|||0009-0004-4655-5789 López-García, Andrés Almar-Liante, Laura|||0000-0001-5103-3812 Carrillo-Del Teso, Alfonso Juan Serra Alfaro, José Manuel|||0000-0002-1515-1106 Jimenez, Catalina Elena Suarez-Anzorena, Rosario Bar, Marcus Perez-Dieste, Virginia Aguadero, Ainara Alonso, Jose A. Puente-Orench, Ines |
| author |
Delgado-Galicia, Blanca|||0009-0004-4655-5789 |
| author_facet |
Delgado-Galicia, Blanca|||0009-0004-4655-5789 López-García, Andrés Almar-Liante, Laura|||0000-0001-5103-3812 Carrillo-Del Teso, Alfonso Juan Serra Alfaro, José Manuel|||0000-0002-1515-1106 Jimenez, Catalina Elena Suarez-Anzorena, Rosario Bar, Marcus Perez-Dieste, Virginia Aguadero, Ainara Alonso, Jose A. Puente-Orench, Ines |
| author_role |
author |
| author2 |
López-García, Andrés Almar-Liante, Laura|||0000-0001-5103-3812 Carrillo-Del Teso, Alfonso Juan Serra Alfaro, José Manuel|||0000-0002-1515-1106 Jimenez, Catalina Elena Suarez-Anzorena, Rosario Bar, Marcus Perez-Dieste, Virginia Aguadero, Ainara Alonso, Jose A. Puente-Orench, Ines |
| author2_role |
author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Instituto Universitario Mixto de Tecnología Química Generalitat Valenciana Agencia Estatal de Investigación Bundesministerium für Bildung und Forschung, Alemania Repositorio Institucional de la Universitat Politècnica de València Riunet |
| dc.subject.none.fl_str_mv |
Exsolution Alloys Janus nanoparticles SOCs Reversibility |
| topic |
Exsolution Alloys Janus nanoparticles SOCs Reversibility |
| description |
[EN] Solid oxide electrochemical cells (SOCs) benefit from exsolution-based electrocatalyst design, where nanoparticles anchored in perovskites enhance stability and activity. Two of the most transformative features of this technology are the ability to engineer multielemental alloy nanoparticles for tailored catalysis and the potential for in situ catalyst regeneration through redox-driven redissolution. However, the fundamental mechanisms governing these processes in complex, multicomponent systems remain poorly understood. In this work, the simultaneous exsolution of Fe, Ni, Co, and Cu from the fuel electrode material Sr2Fe1.2Co0.1Ni0.1Cu0.1Mo0.5O6-delta was investigated using in situ powder neutron diffraction and synchrotron-based near-ambient-pressure X-ray photoelectron spectroscopy (NAP-XPS), combined with advanced electron microscopy to capture morphological evolution. At 700 degrees C, Cu-rich nanoparticles dominate, consistent with Ellingham reducibility trends; however, higher temperatures favor the formation of Fe-enriched alloys, driven by the high availability of Fe cations. Conversely, prolonged reduction promotes the formation of phase-separated Janus-type nanoparticles, primarily due to Fe-Cu immiscibility. Interestingly, redox cycling tests revealed that nanoparticle composition dictates redissolution capacity. While homogeneous alloys exhibited total redissolution into the perovskite backbone and subsequent re-exsolution, Janus-type nanoparticles underwent irreversible transformation into pyramidal NiO nanoparticles via intermediate cubic mixed oxide structures during air exposure. These findings elucidate how temperature, time, and elemental composition govern exsolved nanoparticle chemistry, morphology, and regeneration, establishing design principles for inducing multimetal exsolution in complex oxides toward enhanced electrocatalytic performance in energy conversion technologies. |
| publishDate |
2026 |
| dc.date.none.fl_str_mv |
2026 2026-05-05 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://riunet.upv.es/handle/10251/235231 |
| url |
https://riunet.upv.es/handle/10251/235231 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023 PID2022-139663OB-I00 DESCARBONIZACION DE LA INDUSTRIA DE PROCESOS MEDIANTE LA CATALISIS INTENSIFICADA POR INTEGRACION DE TECNOLOGIAS FACILITADORAS ESENCIALES Bundesministerium für Bildung und Forschung, Alemania https://doi.org/10.13039/501100002347 FKZ 03EW0015B Generalitat Valenciana https://doi.org/10.13039/501100003359 CIPROM%2F2022%2F10 Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 CEX2021-001230-S |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Reconocimiento (by) http://creativecommons.org/licenses/by/4.0/ |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 Reconocimiento (by) http://creativecommons.org/licenses/by/4.0/ |
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openAccess |
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application/pdf |
| dc.publisher.none.fl_str_mv |
American Chemical Society |
| publisher.none.fl_str_mv |
American Chemical Society |
| dc.source.none.fl_str_mv |
reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname:Universitat Politècnica de València (UPV) |
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Universitat Politècnica de València (UPV) |
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RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
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RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
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1869422923435999232 |
| spelling |
Impact of Phase-Separated Janus-Type Formation on the Reversibility of Multicomponent Exsolved Nanoparticles from Complex PerovskitesDelgado-Galicia, Blanca|||0009-0004-4655-5789López-García, AndrésAlmar-Liante, Laura|||0000-0001-5103-3812Carrillo-Del Teso, Alfonso JuanSerra Alfaro, José Manuel|||0000-0002-1515-1106Jimenez, Catalina ElenaSuarez-Anzorena, RosarioBar, MarcusPerez-Dieste, VirginiaAguadero, AinaraAlonso, Jose A.Puente-Orench, InesExsolutionAlloysJanus nanoparticlesSOCsReversibility[EN] Solid oxide electrochemical cells (SOCs) benefit from exsolution-based electrocatalyst design, where nanoparticles anchored in perovskites enhance stability and activity. Two of the most transformative features of this technology are the ability to engineer multielemental alloy nanoparticles for tailored catalysis and the potential for in situ catalyst regeneration through redox-driven redissolution. However, the fundamental mechanisms governing these processes in complex, multicomponent systems remain poorly understood. In this work, the simultaneous exsolution of Fe, Ni, Co, and Cu from the fuel electrode material Sr2Fe1.2Co0.1Ni0.1Cu0.1Mo0.5O6-delta was investigated using in situ powder neutron diffraction and synchrotron-based near-ambient-pressure X-ray photoelectron spectroscopy (NAP-XPS), combined with advanced electron microscopy to capture morphological evolution. At 700 degrees C, Cu-rich nanoparticles dominate, consistent with Ellingham reducibility trends; however, higher temperatures favor the formation of Fe-enriched alloys, driven by the high availability of Fe cations. Conversely, prolonged reduction promotes the formation of phase-separated Janus-type nanoparticles, primarily due to Fe-Cu immiscibility. Interestingly, redox cycling tests revealed that nanoparticle composition dictates redissolution capacity. While homogeneous alloys exhibited total redissolution into the perovskite backbone and subsequent re-exsolution, Janus-type nanoparticles underwent irreversible transformation into pyramidal NiO nanoparticles via intermediate cubic mixed oxide structures during air exposure. These findings elucidate how temperature, time, and elemental composition govern exsolved nanoparticle chemistry, morphology, and regeneration, establishing design principles for inducing multimetal exsolution in complex oxides toward enhanced electrocatalytic performance in energy conversion technologies.Financial support by Generalitat Valenciana (CIPROM/2022/10) and by the Spanish Ministry of Science and Innovation (PID2022-139663OB-100 and CEX2021-001230-S) is gratefully acknowledged. These grants were funded by MCIN/AEI/10.13039/501100011033. We thank the financial support of the Helmholtz Initiative and Networking Fund through the German Federal Ministry of Education and Research (Bundesministerium fur Bildung und Forschung, BMBF) under Grant No. 03EW0015B (CatLab). These experiments were performed at BL24-CIRCE (proposal number 2024088545) beamlines at ALBA Synchrotron with the collaboration of ALBA staff. The authors wish to express their gratitude to the Institut Laue-Langevin (ILL) and the staff at D1B for making all facilities available for neutron diffraction experiments (Experiment No.CRG-2991). We thank the support of the Electronic Microscopy Service of the Universitat Politecnica de Valencia.American Chemical SocietyInstituto Universitario Mixto de Tecnología QuímicaGeneralitat ValencianaAgencia Estatal de InvestigaciónBundesministerium für Bildung und Forschung, AlemaniaRepositorio Institucional de la Universitat Politècnica de València Riunet20262026-05-05journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/235231reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023 PID2022-139663OB-I00 DESCARBONIZACION DE LA INDUSTRIA DE PROCESOS MEDIANTE LA CATALISIS INTENSIFICADA POR INTEGRACION DE TECNOLOGIAS FACILITADORAS ESENCIALESBundesministerium für Bildung und Forschung, Alemania https://doi.org/10.13039/501100002347 FKZ 03EW0015BGeneralitat Valenciana https://doi.org/10.13039/501100003359 CIPROM%2F2022%2F10Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 CEX2021-001230-Sopen accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento (by)http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dnet:riunet______::6db82ffd09c1a00cbca09e59202066122026-06-13T07:49:27Z |
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