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dc.contributor.author | Navarrete Algaba, Laura | es_ES |
dc.contributor.author | Hannahan, C. | es_ES |
dc.contributor.author | Serra Alfaro, José Manuel | es_ES |
dc.date.accessioned | 2023-07-25T18:01:58Z | |
dc.date.available | 2023-07-25T18:01:58Z | |
dc.date.issued | 2022-03 | es_ES |
dc.identifier.issn | 0167-2738 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/195464 | |
dc.description.abstract | [EN] The Ba0.5Sr0.5Co0.8Fe0.2O3-delta perovskite is a promising electrode material for solid-oxide electrochemical cells exhibiting excellent oxygen reduction reaction (ORR) activity and mixed ionic-electronic transport properties at intermediate temperatures but suffers from stability issues. In this work, the effect on stability and electrochemical performance of several B-site substituted cations (Sc, Zr, Y) are studied. The presence of these substituted cations improved stability by preventing (a) the formation of the detrimental hexagonal phase during long term air exposure experiments and (b) reducing the formation of carbonates in CO2-containing atmospheres. Symmetrical cell testing revealed that the Sc-substituted material mixed with an ionic gadolinium-doped ceria (GDC) phase has the lowest polarization resistance among the materials and thus was chosen as the cathode for the full cell construction. The composite electrode achieved encouraging power density values ~877 mW/cm2 at 700 degrees C. The material showed stable hydrogen generation during intermediate temperature electrolysis tests and its performance improved upon the introduction of CO2 to carry out co-electrolysis. Furthermore, methane was obtained during co-electrolysis and Sabatier reaction at temperatures below 450 degrees C. The superior stability and performance of the Sc-substituted Ba0.5Sr0.5Co0.8Fe0.2O3-delta make it an exciting candidate for application as a cathode in reduced temperature electrochemical cells. | es_ES |
dc.description.sponsorship | Acknowledgements This work was financially supported by the Spanish Government (RTI2018-102161 grant) and Generalitat Valenciana (PROMETEO/2018/006 grant) . | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.ispartof | Solid State Ionics | es_ES |
dc.rights | Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) | es_ES |
dc.subject | Co-electrolysis | es_ES |
dc.subject | Reversible | es_ES |
dc.subject | Fuel cell | es_ES |
dc.subject | Stability | es_ES |
dc.subject | Methane | es_ES |
dc.subject | Cathode | es_ES |
dc.title | Reversible electrodes based on B-site substituted Ba0.5Sr0.5Co0.8Fe0.2O3-delta for intermediate temperature solid-oxide cells | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1016/j.ssi.2021.115851 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-102161-B-I00/ES/CONVERSION DIRECTA DE CO2 EN PORTADORES DE ENERGIA QUIMICA UTILIZANDO REACTORES ELECTROCATALITICOS DE MEMBRANA/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/GVA//PROMETEO%2F2018%2F006//Intensificación de reactores catalíticos para la obtención altamente eficiente de combustibles y productos químicos/ | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.description.bibliographicCitation | Navarrete Algaba, L.; Hannahan, C.; Serra Alfaro, JM. (2022). Reversible electrodes based on B-site substituted Ba0.5Sr0.5Co0.8Fe0.2O3-delta for intermediate temperature solid-oxide cells. Solid State Ionics. 376:1-9. https://doi.org/10.1016/j.ssi.2021.115851 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | https://doi.org/10.1016/j.ssi.2021.115851 | es_ES |
dc.description.upvformatpinicio | 1 | es_ES |
dc.description.upvformatpfin | 9 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 376 | es_ES |
dc.relation.pasarela | S\463974 | es_ES |
dc.contributor.funder | GVA | es_ES |
dc.contributor.funder | MINECO | es_ES |