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Electroless synthesis of nanostructured nickel and nickel-boron tubes and their performance as unsupported ethanol electrooxidation catalysts

Muench, Falk ; Oezaslan, Mehtap ; Rauber, Markus ; Kaserer, Sebastian ; Fuchs, Anne ; Mankel, Eric ; Brötz, Joachim ; Strasser, Peter ; Roth, Christina ; Ensinger, Wolfgang (2013)
Electroless synthesis of nanostructured nickel and nickel-boron tubes and their performance as unsupported ethanol electrooxidation catalysts.
In: Journal of Power Sources, 222
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Considering the low abundance of platinum group metals and the high catalytic performance of nickel for the oxidation of small organic molecules, nickel catalysts are promising substitutional materials for direct alcohol fuel cells. Despite the simplicity, good scalability and flexibility of electroless plating, reports on the fabrication of nickel-based catalysts with this method are rare, in particular regarding the deposition of pure nickel. To expand the existing synthetic repertoire, we developed an electroless plating bath allowing the homogeneous deposition of spiky nickel films on very complex shaped substrates. Nanostructured nickel and nickel-boron tubes were obtained by combination of the new and a borane-based plating reaction polymer templates, respectively. The composition, morphology and crystallinity of the products was comprehensively investigated with X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). Finally, the nickel and nickel-boron tubes were applied as unsupported electrocatalysts for the oxidation of ethanol (EtOH) in alkaline environment. Compared to a macroscopic reference, both of the nanostructured catalysts showed improved utilization of high EtOH concentrations and considerably increased oxidation activities, rendering the applied deposition reactions promising routes towards novel catalysts for direct alcohol fuel cells.

Typ des Eintrags: Artikel
Erschienen: 2013
Autor(en): Muench, Falk ; Oezaslan, Mehtap ; Rauber, Markus ; Kaserer, Sebastian ; Fuchs, Anne ; Mankel, Eric ; Brötz, Joachim ; Strasser, Peter ; Roth, Christina ; Ensinger, Wolfgang
Art des Eintrags: Bibliographie
Titel: Electroless synthesis of nanostructured nickel and nickel-boron tubes and their performance as unsupported ethanol electrooxidation catalysts
Sprache: Englisch
Publikationsjahr: 15 Januar 2013
Verlag: Elsevier Science Publishing Company
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Power Sources
Jahrgang/Volume einer Zeitschrift: 222
URL / URN: http://www.sciencedirect.com/science/article/pii/S0378775312...
Kurzbeschreibung (Abstract):

Considering the low abundance of platinum group metals and the high catalytic performance of nickel for the oxidation of small organic molecules, nickel catalysts are promising substitutional materials for direct alcohol fuel cells. Despite the simplicity, good scalability and flexibility of electroless plating, reports on the fabrication of nickel-based catalysts with this method are rare, in particular regarding the deposition of pure nickel. To expand the existing synthetic repertoire, we developed an electroless plating bath allowing the homogeneous deposition of spiky nickel films on very complex shaped substrates. Nanostructured nickel and nickel-boron tubes were obtained by combination of the new and a borane-based plating reaction polymer templates, respectively. The composition, morphology and crystallinity of the products was comprehensively investigated with X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). Finally, the nickel and nickel-boron tubes were applied as unsupported electrocatalysts for the oxidation of ethanol (EtOH) in alkaline environment. Compared to a macroscopic reference, both of the nanostructured catalysts showed improved utilization of high EtOH concentrations and considerably increased oxidation activities, rendering the applied deposition reactions promising routes towards novel catalysts for direct alcohol fuel cells.

Freie Schlagworte: Electroless plating, Ethanol oxidation reaction (EOR), Ion track etched polymers, Nickel nanostructures, Non-precious electrocatalysts
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Erneuerbare Energien
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften
Hinterlegungsdatum: 24 Sep 2012 14:26
Letzte Änderung: 07 Feb 2014 09:14
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