El-Nagar, Gumaa A. ; Muench, Falk ; Roth, Christina (2019)
Tailored dendritic platinum nanostructures as a robust and efficient direct formic acid fuel cell anode.
In: New Journal of Chemistry, 43 (10)
doi: 10.1039/C8NJ06172F
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Engineering of platinum structures with precisely controlled morphology provides an excellent opportunity to efficiently tailor their catalytic performance, greatly improving their durability and activity. Herein, hierarchical, porous Pt dendrites were prepared via a simple and cheap synthesis method based on the galvanic displacement of Ag dendrites by Pt in ecofriendly aqueous solution at room temperature. These unique Pt structures showed greatly enhanced catalytic activity (∼17 times) together with significantly improved stability (∼4.0 fold) for formic acid electrooxidation compared to that of commercial Pt/C catalysts. These enhancements can be attributed to their unique structures providing a large specific surface area, high activity and catalyst utilization, besides improving the CO poisoning tolerance.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | El-Nagar, Gumaa A. ; Muench, Falk ; Roth, Christina |
| Art des Eintrags: | Bibliographie |
| Titel: | Tailored dendritic platinum nanostructures as a robust and efficient direct formic acid fuel cell anode |
| Sprache: | Englisch |
| Publikationsjahr: | 14 März 2019 |
| Verlag: | Royal Society of Chemistry |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | New Journal of Chemistry |
| Jahrgang/Volume einer Zeitschrift: | 43 |
| (Heft-)Nummer: | 10 |
| DOI: | 10.1039/C8NJ06172F |
| URL / URN: | https://doi.org/10.1039/C8NJ06172F |
| Kurzbeschreibung (Abstract): | Engineering of platinum structures with precisely controlled morphology provides an excellent opportunity to efficiently tailor their catalytic performance, greatly improving their durability and activity. Herein, hierarchical, porous Pt dendrites were prepared via a simple and cheap synthesis method based on the galvanic displacement of Ag dendrites by Pt in ecofriendly aqueous solution at room temperature. These unique Pt structures showed greatly enhanced catalytic activity (∼17 times) together with significantly improved stability (∼4.0 fold) for formic acid electrooxidation compared to that of commercial Pt/C catalysts. These enhancements can be attributed to their unique structures providing a large specific surface area, high activity and catalyst utilization, besides improving the CO poisoning tolerance. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik |
| Hinterlegungsdatum: | 14 Feb 2020 10:03 |
| Letzte Änderung: | 13 Jan 2024 14:59 |
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