Carbon Material and Cobalt-Substitution Effects in the Electrochemical Behavior of LaMnO3 for ORR and OER

Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10045/110901
Información del item - Informació de l'item - Item information
Título: Carbon Material and Cobalt-Substitution Effects in the Electrochemical Behavior of LaMnO3 for ORR and OER
Autor/es: Flores-Lasluisa, Jhony Xavier | Huerta Arráez, Francisco | Cazorla-Amorós, Diego | Morallon, Emilia
Grupo/s de investigación o GITE: Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medio Ambiente
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Palabras clave: Cobalt-substitution | LaMnO3 perovskite | Carbon materials | Oxygen reduction reaction | Oxygen evolution reaction
Área/s de conocimiento: Química Física | Química Inorgánica
Fecha de publicación: 30-nov-2020
Editor: MDPI
Cita bibliográfica: Flores-Lasluisa JX, Huerta F, Cazorla-Amorós D, Morallon E. Carbon Material and Cobalt-Substitution Effects in the Electrochemical Behavior of LaMnO3 for ORR and OER. Nanomaterials. 2020; 10(12):2394. https://doi.org/10.3390/nano10122394
Resumen: LaMn1−xCoxO3 perovskites were synthesized by a modified sol-gel method which incorporates EDTA. These materials’ electrochemical activity towards both oxygen reduction (ORR) and oxygen evolution reactions (OER) was studied. The cobalt substitution level determines some physicochemical properties and, particularly, the surface concentration of Co and Mn’s different oxidation states. As a result, the electroactivity of perovskite materials can be tuned using their composition. The presence of cobalt at low concentration influences the catalytic activity positively, and better bifunctionality is attained. As in other perovskites, their low electrical conductivity limits their applicability in electrochemical devices. It was found that the electrochemical performance improved significantly by physically mixing with a mortar the active materials with two different carbon black materials. The existence of a synergistic effect between the electroactive component and the carbon material was interpreted in light of the strong carbon–oxygen–metal interaction. Some mixed samples are promising electrocatalysts towards both ORR and OER.
Patrocinador/es: This research was funded by Ministerio de Ciencia e Innovación (Grant number: PID2019-105923RB-100) and (grant number: BES-2017-081598). And the APC was funded by Universidad de Alicante.
URI: http://hdl.handle.net/10045/110901
ISSN: 2079-4991
DOI: 10.3390/nano10122394
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Revisión científica: si
Versión del editor: https://doi.org/10.3390/nano10122394
Aparece en las colecciones:INV - GEPE - Artículos de Revistas
INV - MCMA - Artículos de Revistas

Archivos en este ítem:
Archivos en este ítem:
Archivo Descripción TamañoFormato 
ThumbnailFlores-Lasluisa_etal_2020_Nanomaterials.pdf3,61 MBAdobe PDFAbrir Vista previa


Este ítem está licenciado bajo Licencia Creative Commons Creative Commons