On the deactivation of N-doped carbon materials active sites during oxygen reduction reaction
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http://hdl.handle.net/10045/120731
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Campo DC | Valor | Idioma |
---|---|---|
dc.contributor | Materiales Carbonosos y Medio Ambiente | es_ES |
dc.contributor | Electrocatálisis y Electroquímica de Polímeros | es_ES |
dc.contributor.author | Quílez-Bermejo, Javier | - |
dc.contributor.author | Morallon, Emilia | - |
dc.contributor.author | Cazorla-Amorós, Diego | - |
dc.contributor.other | Universidad de Alicante. Departamento de Química Inorgánica | es_ES |
dc.contributor.other | Universidad de Alicante. Departamento de Química Física | es_ES |
dc.contributor.other | Universidad de Alicante. Instituto Universitario de Materiales | es_ES |
dc.date.accessioned | 2022-01-10T09:12:04Z | - |
dc.date.available | 2022-01-10T09:12:04Z | - |
dc.date.issued | 2021-12-28 | - |
dc.identifier.citation | Carbon. 2022, 189: 548-560. https://doi.org/10.1016/j.carbon.2021.12.086 | es_ES |
dc.identifier.issn | 0008-6223 (Print) | - |
dc.identifier.issn | 1873-3891 (Online) | - |
dc.identifier.uri | http://hdl.handle.net/10045/120731 | - |
dc.description.abstract | N-doped carbon materials have been considered one of the most promising options for the replacement of platinum-based electrocatalysts towards the oxygen reduction reaction (ORR). This work provides insights into the deactivation routes of N-doped carbon materials. The changes occurring in the active sites of N-doped carbon catalysts have been analyzed in detail through pre- and post-ORR characterization by XPS of selectively N-doped carbon materials. Moreover, computational modelling was used to deepen into the deactivation mechanism of N-doped carbon materials in the ORR. From XPS and computational modelling, it can be concluded that the deactivation of graphitic-type nitrogen species, during the ORR in both acidic and alkaline environments, occurs through oxidation and tautomerization reactions that result in the formation of N–C–O-type groups. In acidic environment, the reaction kinetics is slower due to the high stability of the ORR intermediates. In alkaline electrolyte, the N–C–O-type groups can be easily formed due to the interaction of graphitic-type N species and the OH− anions from the electrolyte. In this case, the catalytic activity is due to the contribution of both graphitic nitrogen groups and N–C–O species. | es_ES |
dc.description.sponsorship | The authors would like to thank MICINN and FEDER (projects PID2019-105923RB-100 and RTI2018-095291-B-I00) for the financial support. | es_ES |
dc.language | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | © 2022 The Authors. Published by Elsevier Ltd. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). | es_ES |
dc.subject | Carbon materials | es_ES |
dc.subject | Nitrogen | es_ES |
dc.subject | Electrocatalysts | es_ES |
dc.subject | Oxygen reduction reaction | es_ES |
dc.subject.other | Química Inorgánica | es_ES |
dc.subject.other | Química Física | es_ES |
dc.title | On the deactivation of N-doped carbon materials active sites during oxygen reduction reaction | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.peerreviewed | si | es_ES |
dc.identifier.doi | 10.1016/j.carbon.2021.12.086 | - |
dc.relation.publisherversion | https://doi.org/10.1016/j.carbon.2021.12.086 | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105923RB-I00 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-095291-B-I00 | es_ES |
Aparece en las colecciones: | INV - GEPE - Artículos de Revistas INV - MCMA - Artículos de Revistas |
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