Elektropower: Efficient electrode materials for long-term stable PEM fuel cells with increased power density

The invention describes a newly developed catalyst system for a fuel cell electrode. The carbon carrier is protected against corrosion by selective coating with polyaniline (PANI). The new catalyst system (Pt/C@PANI) shows significantly higher catalytic activity and stability compared to currently used platinum catalysts. Structurally, the polymer forms a thin layer around the carbon support of the catalyst system, protects the support in the corrosive environment of the fuel cell and thus increases stability. In addition, the electron exchange between the components is accelerated, thereby increasing the catalytic activity. The new wet-chemical synthesis route of the catalyst system allows the structure of the catalyst system to be influenced in a controlled manner by a precisely defined catalyst coating. Electrodes can be manufactured by means of a spray process and used in a polymer electrolyte fuel cell, for example.

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Involved Organizations

  • Institut für Chemische Verfahrenstechnik und Umwelttechnik

Acknowledgements

Financial support by Austria Wirtschaftsservice Gesellschaft mbH, aws and Nationalstiftung für Forschung, Technologie und Entwicklung, FTE.

Contact
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Viktor Hacker
Assoc.Prof. Dipl.-Ing. Dr.techn.

Institut für Chemische Verfahrenstechnik und Umwelttechnik
Inffeldgasse 25/C/IV
8010 Graz

Phone
+43 316 873 - 8780
Mobile
+43 660 316 8812
Fax
+43 316 873 - 108780
Members
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Maximilian Grandi
Dipl.-Ing. BSc
Bernhard Marius
Dipl.-Ing. BSc

Duration
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09/2020 – 10/2021