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Nicollet, C. & Tuller, H. L. (2022) Perspective on the Relationship between the Acidity of Perovskite Oxides and Their Oxygen Surface Exchange Kinetics. Chem. Mater. 34 991–997.
Added by: Richard Baschera (2022-02-03 08:26:01) Last edited by: Richard Baschera (2022-02-10 16:32:13) |
| Type de référence: Article DOI: 10.1021/acs.chemmater.1c03140 Numéro d'identification (ISBN etc.): 0897-4756 Clé BibTeX: Nicollet2022 Voir tous les détails bibliographiques  |
Catégories: INTERNATIONAL, ST2E Créateurs: Nicollet, Tuller Collection: Chem. Mater. |
Consultations : 1/370
Indice de consultation : 9% Indice de popularité : 2.25% |
| Liens URLs https://doi.org/10 ... .chemmater.1c03140 |
| Résumé |
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The oxygen exchange reaction kinetics of a large number of ternary mixed ionic and electronic conducting oxides were analyzed with respect to their calculated surface acidity factors derived from the Smith acidity factors of the corresponding binary oxides from which the ternary oxides are composed. The analysis suggests that the surface exchange kinetics have a direct link to the acidity of the mixed conducting oxide. The possible interplay between acidity and transport properties is discussed. The analysis is also applied to oxygen evolution reaction (OER) electrocatalysts but does not show a link between OER overpotentials and acidity, suggesting that the link is more relevant for gas/oxide interactions at high temperatures. The observations suggest that acidity impacts most directly the oxygen adsorption process while impacting the electron charge transfer only indirectly.
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Publisher: American Chemical Society
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