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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.

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Author:Ulrich Rost, Gabriela Marginean, Roxana Muntean, Pit Podleschny, Michael Brodmann, Cesar Merino, Roberto Diez
Parent Title (English):International Energy and Sustainability Conference (IESC), June 30 - July 1, 2016
Place of publication:[Piscataway, NJ]
Editor: International Energy and Sustainability Conference <Köln>
Document Type:Conference Proceeding
Date of Publication (online):2017/02/02
Year of first Publication:2016
Publishing Institution:Westfälische Hochschule Gelsenkirchen Bocholt Recklinghausen
Release Date:2017/02/15
Tag:Hydraulic compression, Carbon Nano Fibers, PEM Fuel Cells, Catalyst utilization
Departments / faculties:Institute / Westfälisches Energieinstitut
Licence (German):License LogoEs gilt das Urheberrechtsgesetz

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