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Tailored dendritic platinum nanostructures as a robust and efficient direct formic acid fuel cell anode

El-Nagar, Gumaa A. and Muench, Falk and 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), 2019. Royal Society of Chemistry, pp. 4100-4105, ISSN 1144-0546,
DOI: 10.1039/C8NJ06172F,
[Online-Edition: https://doi.org/10.1039/C8NJ06172F],
[Article]

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.

Item Type: Article
Erschienen: 2019
Creators: El-Nagar, Gumaa A. and Muench, Falk and Roth, Christina
Title: Tailored dendritic platinum nanostructures as a robust and efficient direct formic acid fuel cell anode
Language: English
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.

Journal or Publication Title: New Journal of Chemistry
Volume: 43
Number: 10
Publisher: Royal Society of Chemistry
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
Date Deposited: 14 Feb 2020 10:03
DOI: 10.1039/C8NJ06172F
Official URL: https://doi.org/10.1039/C8NJ06172F
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