• Treffer 6 von 10
Zurück zur Trefferliste

A cost-effective PEM fuel cell test system based on hydraulic compression with optimized platinum catalyst loading

  • For this study gas diffusion electrodes (GDE) with low platinum loading are prepared for the application as anode in polymer electrolyte membrane fuel cell (PEMFC) systems based on hydraulic compression. As catalyst support material, carbon nanofibers (CNF) are investigated because of their high specific surface area and high graphitization degree. The electrode preparation is optimized by an economic and environmental friendly pre-treatment process in oxygen plasma. For GDE manufacture an ink containing oxygen plasma activated CNFs as well as hydrophilic polymer is used. After spray coating of this CNF ink on a graphitic substrate, platinum is deposited using the pulse plating technique. Preliminary results showed a considerable improvement of CNF dispersibility as well as an increased amount and an optimized morphology of the deposited platinum. Morphology and microstructure are observed by scanning electron microscopy as well as transmission electron microscopy. Platinum loading is determined by thermogravimetric analysis to be in the range of 0.01 mg cm-2 to 0.017 mg cm-2. Furthermore, MEAs are prepared from these GDEs and testing is performed in a novel modular fuel cell test stack based on hydraulic compression. Technical information about stack design and functions is given in this work.

Metadaten exportieren

Metadaten
Verfasserangaben:Ulrich Rost, Gabriela Marginean, Roxana Muntean, Pit Podleschny, Michael Brodmann, Cesar Merino, Roberto Diez
DOI:https://doi.org/10.1109/IESC.2016.7569500
ISBN:978-1-5090-2980-8
Titel des übergeordneten Werkes (Englisch):International Energy and Sustainability Conference (IESC), June 30 - July 1, 2016
Verlag:IEEE
Verlagsort:[Piscataway, NJ]
Herausgeber: International Energy and Sustainability Conference <Köln>
Dokumentart:Konferenzveröffentlichung
Sprache:Englisch
Datum der Veröffentlichung (online):02.02.2017
Jahr der Erstveröffentlichung:2016
Veröffentlichende Institution:Westfälische Hochschule Gelsenkirchen Bocholt Recklinghausen
Datum der Freischaltung:15.02.2017
Freies Schlagwort / Tag:Hydraulic compression, Carbon Nano Fibers, PEM Fuel Cells, Catalyst utilization
Seitenzahl:6
Fachbereiche / Institute:Institute / Westfälisches Energieinstitut
Lizenz (Deutsch):License LogoEs gilt das Urheberrechtsgesetz

$Rev: 13159 $