Göhl, Daniel ; Rueß, Holger ; Schlicht, Stefanie ; Vogel, Alexandra ; Rohwerder, Michael ; Mayrhofer, Karl J. J. ; Bachmann, Julien ; Román‐Leshkov, Yuriy ; Schneider, Jochen M. ; Ledendecker, Marc (2024)
Stable and Active Oxygen Reduction Catalysts with Reduced Noble Metal Loadings through Potential Triggered Support Passivation.
In: ChemElectroChem, 2020, 7 (11)
doi: 10.26083/tuprints-00016738
Artikel, Zweitveröffentlichung, Verlagsversion

Kurzbeschreibung (Abstract)

The development of stable, cost‐efficient and active materials is one of the main challenges in catalysis. The utilization of platinum in the electroreduction of oxygen is a salient example where the development of new material combinations has led to a drastic increase in specific activity compared to bare platinum. These material classes comprise nanostructured thin films, platinum alloys, shape‐controlled nanostructures and core–shell architectures. Excessive platinum substitution, however, leads to structural and catalytic instabilities. Herein, we introduce a catalyst concept that comprises the use of an atomically thin platinum film deposited on a potential‐triggered passivating support. The model catalyst exhibits an equal specific activity with higher atom utilization compared to bulk platinum. By using potential‐triggered passivation of titanium carbide, irregularities in the Pt film heal out via the formation of insoluble oxide species at the solid/liquid interface. The adaptation of the described catalyst design to the nanoscale and to high‐surface‐area structures highlight the potential for stable, passivating catalyst systems for various electrocatalytic reactions such as the oxygen reduction reaction.

Typ des Eintrags:	Artikel
Erschienen:	2024
Autor(en):	Göhl, Daniel ; Rueß, Holger ; Schlicht, Stefanie ; Vogel, Alexandra ; Rohwerder, Michael ; Mayrhofer, Karl J. J. ; Bachmann, Julien ; Román‐Leshkov, Yuriy ; Schneider, Jochen M. ; Ledendecker, Marc
Art des Eintrags:	Zweitveröffentlichung
Titel:	Stable and Active Oxygen Reduction Catalysts with Reduced Noble Metal Loadings through Potential Triggered Support Passivation
Sprache:	Englisch
Publikationsjahr:	29 Januar 2024
Ort:	Darmstadt
Publikationsdatum der Erstveröffentlichung:	2020
Ort der Erstveröffentlichung:	Weinheim
Verlag:	Wiley-VCH
Titel der Zeitschrift, Zeitung oder Schriftenreihe:	ChemElectroChem
Jahrgang/Volume einer Zeitschrift:	7
(Heft-)Nummer:	11
DOI:	10.26083/tuprints-00016738
URL / URN:	https://tuprints.ulb.tu-darmstadt.de/16738
Zugehörige Links:	Verlags-DOI
Herkunft:	Zweitveröffentlichung DeepGreen
Kurzbeschreibung (Abstract):	The development of stable, cost‐efficient and active materials is one of the main challenges in catalysis. The utilization of platinum in the electroreduction of oxygen is a salient example where the development of new material combinations has led to a drastic increase in specific activity compared to bare platinum. These material classes comprise nanostructured thin films, platinum alloys, shape‐controlled nanostructures and core–shell architectures. Excessive platinum substitution, however, leads to structural and catalytic instabilities. Herein, we introduce a catalyst concept that comprises the use of an atomically thin platinum film deposited on a potential‐triggered passivating support. The model catalyst exhibits an equal specific activity with higher atom utilization compared to bulk platinum. By using potential‐triggered passivation of titanium carbide, irregularities in the Pt film heal out via the formation of insoluble oxide species at the solid/liquid interface. The adaptation of the described catalyst design to the nanoscale and to high‐surface‐area structures highlight the potential for stable, passivating catalyst systems for various electrocatalytic reactions such as the oxygen reduction reaction.
Alternatives oder übersetztes Abstract:	Alternatives Abstract Sprache Self-help: A catalyst concept is introduced that comprises the use of an atomically thin platinum film deposited on a potential-triggered passivating support that heals out defects, resulting in high stability and activity while keeping the noble metal content low. Englisch
Freie Schlagworte:	electrocatalysis, fuel cells, nanostructures, oxygen reduction reaction, self-healing
Status:	Verlagsversion
URN:	urn:nbn:de:tuda-tuprints-167388
Sachgruppe der Dewey Dezimalklassifikatin (DDC):	600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie
Fachbereich(e)/-gebiet(e):	07 Fachbereich Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie
Hinterlegungsdatum:	29 Jan 2024 13:40
Letzte Änderung:	30 Jan 2024 19:05
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Verfügbare Versionen dieses Eintrags

• Stable and Active Oxygen Reduction Catalysts with Reduced Noble Metal Loadings through Potential Triggered Support Passivation. (deposited 29 Jan 2024 13:40) [Gegenwärtig angezeigt]
  • Stable and active oxygen reduction catalysts with reduced noble metal loadings through potential triggered support passivation. (deposited 30 Jan 2024 07:50)

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