Evaluating oxide nanoparticle exsolution on A-site deficient PrBaCo2O6-δ electrodes
Nanoparticle exsolution is a powerful technique for functionalizing redox oxides in energy applications, particularly at high temperatures. It shows promise for solid oxide fuel cells and electrolyzers. However, exsolution of other chemistries like metal oxides is not well studied, and the mechanism...
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IOP Publishing
2025-01-01
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| Series: | JPhys Energy |
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| Online Access: | https://doi.org/10.1088/2515-7655/ada8de |
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| author | Alfonso J Carrillo María Balaguer Cecilia Solís Andrés López-García Sylvio Haas María Fabuel Blanca Delgado-Galicia Isabelle Rodriguez Einar Vøllestad Sebastian Wachowski Ragnar Strandbakke Truls Norby Jose M Serra |
| author_facet | Alfonso J Carrillo María Balaguer Cecilia Solís Andrés López-García Sylvio Haas María Fabuel Blanca Delgado-Galicia Isabelle Rodriguez Einar Vøllestad Sebastian Wachowski Ragnar Strandbakke Truls Norby Jose M Serra |
| author_sort | Alfonso J Carrillo |
| collection | DOAJ |
| description | Nanoparticle exsolution is a powerful technique for functionalizing redox oxides in energy applications, particularly at high temperatures. It shows promise for solid oxide fuel cells and electrolyzers. However, exsolution of other chemistries like metal oxides is not well studied, and the mechanism is poorly understood. This work explores oxide exsolution in PrBa _1− _x Co _2 O _6− _δ ( x = 0, 0.05, 0.1, 0.15) double perovskites, practiced electrodes in proton ceramic fuel cells and electrolyzers. Oxide exsolution in PrBa _1− _x Co _2 O _6− _δ aimed at boosting the electrocatalytic activity and was evaluated by varying intrinsic materials-related properties, viz. A-site deficiency and external parameters (temperature, under fixed time, and p O _2 = 10 ^−5 atm conditions). The materials were analyzed with conventional characterization tools and synchrotron-based small-angle x-ray scattering. Unlike metal-nanoparticle exsolution, increasing the A-site deficiency did not enhance the extent of oxide-nanoparticle exsolution, whereas larger nanoparticles were obtained by increasing the exsolution temperature. Combined Raman spectroscopy and electron microscopy analysis revealed that BaCoO _3 , Co _3 O _4 , and amorphous BaCO _3 nanoparticles were formed on the surface of the double perovskites after the reductive treatments. The present results demonstrate the complexity of oxide-nanoparticle exsolution in comparison with metal-nanoparticle exsolution. Further materials screening and mechanistic studies are needed to enhance our understanding of this method for functionalizing proton ceramic electrochemical cells (PCEC) electrodes. |
| format | Article |
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| institution | Kabale University |
| issn | 2515-7655 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | JPhys Energy |
| spelling | doaj-art-00da2b5041f14cc1abc57bdfa51a48222025-01-23T07:01:26ZengIOP PublishingJPhys Energy2515-76552025-01-017202500710.1088/2515-7655/ada8deEvaluating oxide nanoparticle exsolution on A-site deficient PrBaCo2O6-δ electrodesAlfonso J Carrillo0https://orcid.org/0000-0002-5576-9277María Balaguer1https://orcid.org/0000-0002-7098-9235Cecilia Solís2https://orcid.org/0000-0002-3997-8802Andrés López-García3https://orcid.org/0000-0001-9719-606XSylvio Haas4María Fabuel5Blanca Delgado-Galicia6https://orcid.org/0009-0004-4655-5789Isabelle Rodriguez7Einar Vøllestad8https://orcid.org/0000-0002-9895-1060Sebastian Wachowski9https://orcid.org/0000-0003-3752-0432Ragnar Strandbakke10Truls Norby11https://orcid.org/0000-0003-0909-0439Jose M Serra12https://orcid.org/0000-0002-1515-1106Instituto de Tecnología Química, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas , 46022 Valencia, SpainInstituto de Tecnología Química, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas , 46022 Valencia, SpainGerman Engineering Materials Science Center (GEMS) at Heinz Maier‐Leibnitz Zentrum, Helmholtz‐Zentrum Hereon , Lichtenbergstr. 1, 85748 Garching, GermanyInstituto de Tecnología Química, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas , 46022 Valencia, SpainDeutsches Elektronen Synchrotron (DESY) , Notkestr. 85, 22607 Hamburg, GermanyInstituto de Tecnología Química, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas , 46022 Valencia, SpainInstituto de Tecnología Química, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas , 46022 Valencia, SpainInstituto de Tecnología Química, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas , 46022 Valencia, SpainSustainable Energy Technology, SINTEF Industry , Forskningsveien 1, NO-0373 Oslo, NorwayInstitute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology , Gdańsk, PolandSustainable Energy Technology, SINTEF Industry , Forskningsveien 1, NO-0373 Oslo, Norway; Department of Chemistry, University of Oslo, Centre for Materials Science and Nanotechnology , NO-0318 Oslo, NorwayDepartment of Chemistry, University of Oslo, Centre for Materials Science and Nanotechnology , NO-0318 Oslo, NorwayInstituto de Tecnología Química, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas , 46022 Valencia, SpainNanoparticle exsolution is a powerful technique for functionalizing redox oxides in energy applications, particularly at high temperatures. It shows promise for solid oxide fuel cells and electrolyzers. However, exsolution of other chemistries like metal oxides is not well studied, and the mechanism is poorly understood. This work explores oxide exsolution in PrBa _1− _x Co _2 O _6− _δ ( x = 0, 0.05, 0.1, 0.15) double perovskites, practiced electrodes in proton ceramic fuel cells and electrolyzers. Oxide exsolution in PrBa _1− _x Co _2 O _6− _δ aimed at boosting the electrocatalytic activity and was evaluated by varying intrinsic materials-related properties, viz. A-site deficiency and external parameters (temperature, under fixed time, and p O _2 = 10 ^−5 atm conditions). The materials were analyzed with conventional characterization tools and synchrotron-based small-angle x-ray scattering. Unlike metal-nanoparticle exsolution, increasing the A-site deficiency did not enhance the extent of oxide-nanoparticle exsolution, whereas larger nanoparticles were obtained by increasing the exsolution temperature. Combined Raman spectroscopy and electron microscopy analysis revealed that BaCoO _3 , Co _3 O _4 , and amorphous BaCO _3 nanoparticles were formed on the surface of the double perovskites after the reductive treatments. The present results demonstrate the complexity of oxide-nanoparticle exsolution in comparison with metal-nanoparticle exsolution. Further materials screening and mechanistic studies are needed to enhance our understanding of this method for functionalizing proton ceramic electrochemical cells (PCEC) electrodes.https://doi.org/10.1088/2515-7655/ada8deexsolutionoxide nanoparticlesproton ceramic electrolyzersA-site deficiencydouble perovskites |
| spellingShingle | Alfonso J Carrillo María Balaguer Cecilia Solís Andrés López-García Sylvio Haas María Fabuel Blanca Delgado-Galicia Isabelle Rodriguez Einar Vøllestad Sebastian Wachowski Ragnar Strandbakke Truls Norby Jose M Serra Evaluating oxide nanoparticle exsolution on A-site deficient PrBaCo2O6-δ electrodes JPhys Energy exsolution oxide nanoparticles proton ceramic electrolyzers A-site deficiency double perovskites |
| title | Evaluating oxide nanoparticle exsolution on A-site deficient PrBaCo2O6-δ electrodes |
| title_full | Evaluating oxide nanoparticle exsolution on A-site deficient PrBaCo2O6-δ electrodes |
| title_fullStr | Evaluating oxide nanoparticle exsolution on A-site deficient PrBaCo2O6-δ electrodes |
| title_full_unstemmed | Evaluating oxide nanoparticle exsolution on A-site deficient PrBaCo2O6-δ electrodes |
| title_short | Evaluating oxide nanoparticle exsolution on A-site deficient PrBaCo2O6-δ electrodes |
| title_sort | evaluating oxide nanoparticle exsolution on a site deficient prbaco2o6 δ electrodes |
| topic | exsolution oxide nanoparticles proton ceramic electrolyzers A-site deficiency double perovskites |
| url | https://doi.org/10.1088/2515-7655/ada8de |
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