Walbert, Torsten ; Antoni, Markus ; Muench, Falk ; Späth, Thomas ; Ensinger, Wolfgang (2018)
Electroless Synthesis of Highly Stable and Free-Standing Porous Pt Nanotube Networks and their Application in Methanol Oxidation.
In: ChemElectroChem, 5 (7)
doi: 10.1002/celc.201701271
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Free‐standing 3D metal nanostructures represent an upcoming class of electrocatalysts for fuel cell technology, combining high aging stability and activity with efficient metal utilization while abstaining from additives such as polymer binders. Until now, most fabrication routes are complex and produce disordered nanostructures. Here, we present a highly adjustable, wet‐chemical synthesis route toward ordered, thin‐walled Pt nanotube networks. The approach includes an optimized electroless plating procedure and enables easy regulation of structural parameters (i. e. nanotube diameter, wall thickness, density) by using ion track‐etched polycarbonate templates. In comparison to individual nanotubes, the resulting nanonetworks exhibit a free‐standing and robust frame, which is a great advantage for use in various electrochemical and catalytic applications. Cyclic voltammetry studies of the methanol oxidation reaction demonstrate enhanced electrocatalytic activity compared to commercially available Pt nanoparticles. The nanonetworks provide outstanding long‐life stability with up to 97 % of the initial active surface area after 1000 cycles, which makes them a promising material in different application fields, for example, in direct methanol fuel cells.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Walbert, Torsten ; Antoni, Markus ; Muench, Falk ; Späth, Thomas ; Ensinger, Wolfgang |
| Art des Eintrags: | Bibliographie |
| Titel: | Electroless Synthesis of Highly Stable and Free-Standing Porous Pt Nanotube Networks and their Application in Methanol Oxidation |
| Sprache: | Englisch |
| Publikationsjahr: | 3 April 2018 |
| Verlag: | Wiley-VCH Verlag GmbH, Weinheim |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | ChemElectroChem |
| Jahrgang/Volume einer Zeitschrift: | 5 |
| (Heft-)Nummer: | 7 |
| DOI: | 10.1002/celc.201701271 |
| URL / URN: | https://doi.org/10.1002/celc.201701271 |
| Kurzbeschreibung (Abstract): | Free‐standing 3D metal nanostructures represent an upcoming class of electrocatalysts for fuel cell technology, combining high aging stability and activity with efficient metal utilization while abstaining from additives such as polymer binders. Until now, most fabrication routes are complex and produce disordered nanostructures. Here, we present a highly adjustable, wet‐chemical synthesis route toward ordered, thin‐walled Pt nanotube networks. The approach includes an optimized electroless plating procedure and enables easy regulation of structural parameters (i. e. nanotube diameter, wall thickness, density) by using ion track‐etched polycarbonate templates. In comparison to individual nanotubes, the resulting nanonetworks exhibit a free‐standing and robust frame, which is a great advantage for use in various electrochemical and catalytic applications. Cyclic voltammetry studies of the methanol oxidation reaction demonstrate enhanced electrocatalytic activity compared to commercially available Pt nanoparticles. The nanonetworks provide outstanding long‐life stability with up to 97 % of the initial active surface area after 1000 cycles, which makes them a promising material in different application fields, for example, in direct methanol fuel cells. |
| Freie Schlagworte: | cyclic voltammetry, electrocatalysis, electroless plating, nanotubes, platinum |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik |
| Hinterlegungsdatum: | 27 Jun 2018 07:55 |
| Letzte Änderung: | 27 Jun 2018 07:55 |
| PPN: | |
| Sponsoren: | Financial support by the German Research Foundation is gratefully acknowledged (Project MIT-Nano). |
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