dc.creator | Grumelli, Doris Elda | |
dc.creator | Wiegmann, Tim | |
dc.creator | Barja, Sara | |
dc.creator | Reikowski, Finn | |
dc.creator | Maroun, Fouad | |
dc.creator | Allongue, Philippe | |
dc.creator | Balajka, Jan | |
dc.creator | Parkinson, Gareth S. | |
dc.creator | Diebold, Ulrike | |
dc.creator | Kern, Klaus | |
dc.creator | Magnussen, Olaf M. | |
dc.date.accessioned | 2021-09-22T11:35:58Z | |
dc.date.accessioned | 2022-10-14T23:12:16Z | |
dc.date.available | 2021-09-22T11:35:58Z | |
dc.date.available | 2022-10-14T23:12:16Z | |
dc.date.created | 2021-09-22T11:35:58Z | |
dc.date.issued | 2020-12-01 | |
dc.identifier | Grumelli, Doris Elda; Wiegmann, Tim; Barja, Sara; Reikowski, Finn; Maroun, Fouad; et al.; Electrochemical stability of the reconstructed Fe3O4(001) surface; Wiley-VCH; Angewandte Chemie; 132; 49; 1-12-2020; 22088-22092 | |
dc.identifier | 0044-8249 | |
dc.identifier | http://hdl.handle.net/11336/141093 | |
dc.identifier | 1521-3757 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4317981 | |
dc.description.abstract | Establishing the atomic-scale structure of metaloxide surfaces during electrochemical reactions is a key step to modeling this important class of electrocatalysts. Here, we demonstrate that the characteristic (p2p2)R458 surface reconstruction formed on (001)-oriented magnetite single crystals is maintained after immersion in 0.1 M NaOH at 0.20 V vs. Ag/AgCl and we investigate its dependence on the electrode potential. We follow the evolution of the surface using in situ and operando surface X-ray diffraction from the onset of hydrogen evolution, to potentials deep in the oxygen evolution reaction (OER) regime. The reconstruction remains stable for hours between 0.20 and 0.60 V and, surprisingly, is still present at anodic current densities of up to 10 mA cm2 and strongly affects the OER kinetics. We attribute this to a stabilization of the Fe3O4 bulk by the reconstructed surface. At more negative potentials, a gradual and largely irreversible lifting of the reconstruction is observed due to the onset of oxide reduction. | |
dc.language | eng | |
dc.publisher | Wiley-VCH | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/ange.202008785 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/ange.202008785 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | ELECTROCATALYSIS | |
dc.subject | MAGNETITE SINGLE CRYSTALS | |
dc.subject | OPERANDO X-RAY SURFACE DIFFRACTION | |
dc.subject | OXIDE SURFACE STRUCTURES | |
dc.title | Electrochemical stability of the reconstructed Fe3O4(001) surface | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |