| DOI | Trouver le DOI : https://doi.org/10.1016/j.apenergy.2012.10.017 |
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| Auteur | Rechercher : Zhang, Lei1Identifiant ORCID : https://orcid.org/0000-0002-1823-2948; Rechercher : Kim, Jenny1; Rechercher : Zhang, Jiujun1; Rechercher : Nan, Feihong; Rechercher : Gauquelin, Nicolas; Rechercher : Botton, Gianluigi A.; Rechercher : He, Ping; Rechercher : Bashyam, Rajesh; Rechercher : Knights, Shanna |
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| Affiliation | - Conseil national de recherches du Canada. Énergie, les mines et l'environnement
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| Format | Texte, Article |
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| Sujet | Alloy catalyst; Carbon monoxide tolerance; Core shell structure; Electrochemical measurements; Energy dispersive X-ray spectrometry; High resolution; High-angle annular dark fields; Hydrogen oxidation reaction; Reducing atmosphere; Ruthenium precursors; Scanning transmission electron microscopy; TiO; Electrocatalysts; Electron energy loss spectroscopy; Platinum alloys; Proton exchange membrane fuel cells (PEMFC); Shells (structures); Titanium dioxide; X ray diffraction; Ruthenium alloys; catalysis; catalyst; electrochemical method; irradiance; microwave radiation; pyrolysis |
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| Résumé | A new method is developed for synthesizing Ti4O7 supported Ru@Pt core-shell catalyst (Ru@Pt/Ti4O7) through pyrolysis followed by microwave irradiation. The purpose is to improve the Ru durability of PtRu from core-shell structure and strong bonding to Ti4O7 oxide. In this method, the first step is to co-reduce the mixture of ruthenium precursor and TiO2 in a H2 reducing atmosphere under heat-treatment to obtain a Ru core on Ti4O7 support, and the second step is to create a shell of platinum via microwave irradiation. Energy dispersive X-ray spectrometry, X-ray Diffraction, High-resolution Scanning Transmission Electron Microscopy with the high-angle annular dark-field method and Electron Energy-Loss Spectroscopy are used to demonstrate that this catalyst with larger particles has a core-shell structure with a Ru core and a Pt shell. Electrochemical measurements show Ru@Pt/Ti4O7 catalyst has a higher CO-tolerance capability than that of PtRu/C alloy catalyst. |
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| Date de publication | 2012-11-11 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21270364 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 731129f8-091c-43a0-96b3-79cbab219259 |
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| Enregistrement créé | 2014-02-05 |
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| Enregistrement modifié | 2021-08-13 |
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