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Hydrophobicity Patterning of Gas Diffusion Media for Polymer Electrolyte Fuel Cells

Biswas, Indro and Gazdzicki, Pawel and Tomas, Martin and Schulze, Mathias (2014) Hydrophobicity Patterning of Gas Diffusion Media for Polymer Electrolyte Fuel Cells. DPG-Frühjahrstagung der Sektion Kondensierte Materie, 30.3. - 4.4. 2014, Dresden, Deutschland.

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Abstract

Polymer electrolyte fuel cells with their high gravimetric energy density face a water balance problem especially under variable loads, e.g. in automotive conditions: The excess product water needs to be removed from the fuel cell while maintaining a humidifed membrane. The gas diffusion layer, which also provides contact to the electro- chemically active components, has to achieve the passive management of the water balance. Heterogeneously hydrophobic gas diffusion media have already shown to be more capable of balancing these opposing requirements than conventional materials. Various methods of pattern- ing gradients of hydrophobicity are applied, like microperforation and laser, focused X-Ray and ion beam irradiation. The modifcations are analysed with photoemission and infrared spectroscopy and compared for their performance, applicability and scalability. The research leading to these results has received funding from the European Union's Seventh Framework Programme (FP7/2007-2013) for Fuel Cell and Hydrogen Joint Technology Initiative under Grant No. 303446 (Impala).

Item URL in elib:https://elib.dlr.de/92930/
Document Type:Conference or Workshop Item (Speech)
Title:Hydrophobicity Patterning of Gas Diffusion Media for Polymer Electrolyte Fuel Cells
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Biswas, Indroindro.biswas (at) dlr.deUNSPECIFIED
Gazdzicki, Pawelpawel.gazdzicki (at) dlr.deUNSPECIFIED
Tomas, Martin2Západočeská Univerzita v PlzniUNSPECIFIED
Schulze, Mathiasmathias.schulze (at) dlr.deUNSPECIFIED
Date:31 March 2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Funktionswerkstoffe, Brennstoffzellen, Wasserhaushalt, poröse Materialien, Strukturierung
Event Title:DPG-Frühjahrstagung der Sektion Kondensierte Materie
Event Location:Dresden, Deutschland
Event Type:national Conference
Event Dates:30.3. - 4.4. 2014
Organizer:Deutsche Physikalische Gesellschaft
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Biswas, Indro
Deposited On:02 Dec 2014 14:48
Last Modified:02 Dec 2014 14:48

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