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Stable platinum nanostructures on nitrogen-doped carbon obtained by high-temperature synthesis for use in PEMFC

Peter, B. and Melke, J. and Muench, F. and Ensinger, W. and Roth, C. (2014):
Stable platinum nanostructures on nitrogen-doped carbon obtained by high-temperature synthesis for use in PEMFC.
In: Journal of Applied Electrochemistry, Springer Netherlands, pp. 573-580, 44, (5), ISSN 0021-891X,
[Online-Edition: http://dx.doi.org/10.1007/s10800-014-0664-4],
[Article]

Abstract

We propose a novel, facile synthesis route to produce stable platinum-based polymer electrolyte membrane fuel cell catalysts supported on nitrogen-doped carbon. Platinum nanoparticles were decorated on polyaniline (PANI), a nitrogen-containing polymer, before its subsequent carbonization at 750 °C under nitrogen atmosphere. Thus, nitrogen-doped carbon-supported platinum catalysts were produced with homogeneously distributed small metal particles, which are otherwise difficult to obtain. Most remarkably the platinum nanoparticles did not grow significantly during the carbonization step. In contrast, commercially available standard catalysts on carbon materials subjected to the same heat treatment showed severe particle growth. In accordance with the high thermal stability, the PANI-derived catalyst shows good long-term stability in accelerated stress test and a promising performance as cathode material in 5 × 5 cm2 single cells. The synthesis is carried out without the need for special laboratory equipment, so it will be easy to scale up for industrial catalyst production.

Item Type: Article
Erschienen: 2014
Creators: Peter, B. and Melke, J. and Muench, F. and Ensinger, W. and Roth, C.
Title: Stable platinum nanostructures on nitrogen-doped carbon obtained by high-temperature synthesis for use in PEMFC
Language: English
Abstract:

We propose a novel, facile synthesis route to produce stable platinum-based polymer electrolyte membrane fuel cell catalysts supported on nitrogen-doped carbon. Platinum nanoparticles were decorated on polyaniline (PANI), a nitrogen-containing polymer, before its subsequent carbonization at 750 °C under nitrogen atmosphere. Thus, nitrogen-doped carbon-supported platinum catalysts were produced with homogeneously distributed small metal particles, which are otherwise difficult to obtain. Most remarkably the platinum nanoparticles did not grow significantly during the carbonization step. In contrast, commercially available standard catalysts on carbon materials subjected to the same heat treatment showed severe particle growth. In accordance with the high thermal stability, the PANI-derived catalyst shows good long-term stability in accelerated stress test and a promising performance as cathode material in 5 × 5 cm2 single cells. The synthesis is carried out without the need for special laboratory equipment, so it will be easy to scale up for industrial catalyst production.

Journal or Publication Title: Journal of Applied Electrochemistry
Volume: 44
Number: 5
Publisher: Springer Netherlands
Uncontrolled Keywords: PEMFC, Nitrogen-doped carbon, Carbonization, PANI, Particle size, Catalyst stability
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences > Material Science > Erneuerbare Energien
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 07 Jul 2014 09:28
Official URL: http://dx.doi.org/10.1007/s10800-014-0664-4
Identification Number: doi:10.1007/s10800-014-0664-4
Funders: We gratefully acknowledge financial support from the German Science Foundation DFG (Contract No. RO 2454/10-1).
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