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Göhl, Daniel [Author]; Rueß, Holger [Author]; Schlicht, Stefanie [Author]; Vogel, Alexandra [Author]; Rohwerder, Michael [Author]; Mayrhofer, Karl J. J. [Author]; Bachmann, Julien [Author]; Román‐Leshkov, Yuriy [Author]; Schneider, Jochen M. [Author]; Ledendecker, Marc [Author]

Stable and Active Oxygen Reduction Catalysts with Reduced Noble Metal Loadings through Potential Triggered Support Passivation

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  • Media type: E-Article
  • Title: Stable and Active Oxygen Reduction Catalysts with Reduced Noble Metal Loadings through Potential Triggered Support Passivation
  • Contributor: Göhl, Daniel [Author]; Rueß, Holger [Author]; Schlicht, Stefanie [Author]; Vogel, Alexandra [Author]; Rohwerder, Michael [Author]; Mayrhofer, Karl J. J. [Author]; Bachmann, Julien [Author]; Román‐Leshkov, Yuriy [Author]; Schneider, Jochen M. [Author]; Ledendecker, Marc [Author]
  • Published: Wiley-VCH, 2020
  • Published in: ChemElectroChem 7(11), 2404 - 2409 (2020). doi:10.1002/celc.202000278
  • Language: English
  • DOI: https://doi.org/10.1002/celc.202000278
  • ISSN: 2196-0216
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: The development of stable, cost-efficient and activematerials is one of the main challenges in catalysis. Theutilization of platinum in the electro-reduction of oxygen is asalient example where the development of new materialcombinations has led to a drastic increase in specific activitycompared to bare platinum. These material classes comprisenanostructured thin films, platinum-alloys, shape-controllednanostructures or core-shell architectures. Excessive platinumsubstitution, however, leads to structural and catalyticinstabilities. Herein, we introduce a catalyst concept thatcomprises the use of an atomically thin platinum film depositedon a potential-triggered passivating support. The modelcatalyst exhibits a threefold higher specific activity with higheratom utilisation compared to bulk platinum. By using potentialtriggeredpassivation of titanium carbide, irregularities in the Ptfilm heal out via the formation of insoluble oxide species at thesolid/liquid interface. The adaptation of the described catalystdesign to the nanoscale and to high-surface area structureshighlight the potential for stable, passivating catalyst systemsfor various electrocatalytic reactions such as the oxygenreduction reaction.
  • Access State: Open Access