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Confined-Space Alloying of Nanoparticles for the Synthesis of Efficient PtNi Fuel-Cell Catalysts

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Baldizzone,  Claudio
Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Mezzavilla,  Stefano
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Meier,  Josef Christian
Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Schüth,  Ferdi
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Institute for Chemical Technology and Polymer Chemistry and Institute of Catalysis Research and Technology, Karlsruher Institut für Technologie (KIT), Kaiserstrasse 12 76131 Karlsruhe (Germany);

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Mayrhofer,  Karl J. J.
Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Citation

Baldizzone, C., Mezzavilla, S., Carvalho, H. W. P., Meier, J. C., Schuppert, A. K., Heggen, M., et al. (2014). Confined-Space Alloying of Nanoparticles for the Synthesis of Efficient PtNi Fuel-Cell Catalysts. Angewandte Chemie International Edition, 53(51), 14250-14254. doi:10.1002/anie.201406812.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-A1BD-E
Abstract
The efficiency of polymer electrolyte membrane fuel cells is strongly depending on the electrocatalyst performance, that is, its activity and stability. We have designed a catalyst material that combines both, the high activity for the decisive cathodic oxygen reduction reaction associated with nanoscale Pt alloys, and the excellent durability of an advanced nanostructured support. Owing to the high specific activity and large active surface area, the catalyst shows extraordinary mass activity values of 1.0 Amg Pt-1. Moreover, the material retains its initial active surface area and intrinsic activity during an extended accelerated aging test within the typical operation range. This excellent performance is achieved by confined-space alloying of the nanoparticles in a controlled manner in the pores of the support.