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Characterization of the Platinum–Carbon Interface for Electrochemical Applications

MPG-Autoren
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Willinger,  Elena
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
MPI for Chemical Energy Conversion;

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Tarasov,  Andrey
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Blume,  Raoul
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
MPI for Chemical Energy Conversion;

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Rinaldi,  Ali
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
Chemistry Department, King Fahd University of Petroleum & Minerals;

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Timpe,  Olaf
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Massué,  Cyriac
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
MPI for Chemical Energy Conversion;

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Scherzer,  Michael
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
MPI for Chemical Energy Conversion;

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Noack,  Johannes
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
MPI for Chemical Energy Conversion;

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Willinger,  Marc Georg
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
MPI for Chemical Energy Conversion;
Max Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry;

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Zitation

Willinger, E., Tarasov, A., Blume, R., Rinaldi, A., Timpe, O., Massué, C., et al. (2017). Characterization of the Platinum–Carbon Interface for Electrochemical Applications. ACS Catalysis, 7(7), 4395-4407. doi:10.1021/acscatal.7b00614.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002D-8D9B-B
Zusammenfassung
Fuel cell catalysts suffer stability issues that are related to reaction-induced corrosion, catalyst sintering, and detachment. In the case of carbon-supported platinum nanoparticles, the stability can be improved by changing the carbon structure and tuning the metal–support interaction. The large structural and chemical variability of carbon offers a potential for improved electrochemical properties. However, a rational design of the metal–carbon interface requires knowledge about the relation between the carbon structure and the resulting platinum–carbon interaction. Using a variety of complementary analytical methods such as atomic scale imaging and local as well as integral spectroscopic tools in combination with different electrochemical aging protocols, we elaborate a relation between the structure-determined surface properties of the carbon and the resulting platinum–carbon interface. Atomic-scale imaging of the interface combined with electron spectroscopic methods enables distinction between different interaction types and associated bonding state and charge transfer properties. For the investigations, three differently structured industrial carbon support structures have been selected. The reported findings define solid criteria for a rational design of improved carbon supports.