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Ferrari, A. |
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Schimpf, Christian |
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Dunser, M. |
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Thomas, Eric |
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Gecse, Zoltan |
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Tsrunchev, Peter |
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Della Ricca, Giuseppe |
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Cios, Grzegorz |
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Hohlmann, Marcus |
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Dudarev, A. |
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Mascagna, V. |
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Santimaria, Marco |
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Poudyal, Nabin |
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Piozzi, Antonella |
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Mørtsell, Eva Anne |
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Jin, S. |
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Noel, Cédric |
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Fino, Paolo |
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Mailley, Pascal |
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Meyer, Ernst |
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Zhang, Qi |
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Pfattner, Raphael | Brussels |
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Kooi, Bart J. |
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Babuji, Adara |
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Pauporte, Thierry |
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Vogel, A.
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Topics
Publications (8/8 displayed)
- 2020Stable and Active Oxygen Reduction Catalysts with Reduced Noble Metal Loadings through Potential Triggered Support Passivationcitations
- 2017Formation of intermetallic delta phase in Al-10Si-0.3Fe alloy investigated by in-situ 4D X-ray synchrotron tomographycitations
- 2017Michael acceptor containing drugs are a novel class of 5-lipoxygenase inhibitor targeting the surface cysteines C416 and C418citations
- 2013Searches for heavy long-lived sleptons and $%5Cit{R}$-hadrons with the ATLAS detector in $%5Cit{pp}$ collisions at $%5Csqrt{s}=7$ TeVcitations
- 2013ATLAS search for new phenomena in dijet mass and angular distributions using $%5Cit{pp}$ collisions at $ %5Csqrt{s}=7 $ TeVcitations
- 2013Searches for heavy long-lived sleptons and R-hadrons with the ATLAS detector in pp collisions at root s=7 TeVcitations
- 2010Search for Quark Contact Interactions in Dijet Angular Distributions in $pp$ Collisions at $%5Csqrt{s}$ = 7 TeV Measured with the ATLAS Detectorcitations
- 2009Development of a multifunctional coating system for laser-induced material transportcitations
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article
Stable and Active Oxygen Reduction Catalysts with Reduced Noble Metal Loadings through Potential Triggered Support Passivation
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. © 2020 The Authors. Published by Wiley-VCH Verlag GmbH Co. KGaA.