Holzapfel, Christian and Haug , Andrea and Bauder, Alexander and Gülzow, Erich and Schulze, Mathias (2012) FTIR spectroscopic imaging of aged fuel cell components. 2nd Ertl Symposium, 2012-06-24 - 2012-06-27, Stuttgart, Deutschland.
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Abstract
Regarding fuel cells as an environmen-tally friendly energy converter one of the major unsolved problems beside the costs is an insufficient lifetime. In poly-mer electrolyte fuel cells humidity management is one of the key point for their performance. The water management is mainly determined by the hydrophobic/hydrophilic properties of the gas diffusion layer (GDL) including the micro porous layer. Thus the degradation of GDL and micro porous layers MPL therein are the key point for the understanding of reduced fuel cell lifetimes. In the past the partially decomposition of the polymers in the GDL and the MPL was observed by X-ray photoelec-tron spectroscopy measurements on fresh and aged GDL and MPL. The decomposition of the polymers due to fuel cell operation changes the hydrophobic/hydrophilic properties of the GDL, MPL and catalyst layer and conse-quently also the water balance in the cell.This poster demonstrates the applicability of Fourier transform infrared microscopy (FTIR) and Raman microscopy to investigate membrane-electrode-assemblies (MEA) and their components, e.g. the gas diffusion layer (GDL) and micro porous layer (MPL). For the study of the catalyst layer other methods that provide direct information on elemental material composition are more suitable. The presented data comprise fresh MEAs only that can be used as reference samples to study specific degradation mechanism
Item URL in elib: | https://elib.dlr.de/77617/ | ||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Poster) | ||||||||||||||||||||||||
Title: | FTIR spectroscopic imaging of aged fuel cell components | ||||||||||||||||||||||||
Authors: |
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Date: | 2012 | ||||||||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | Fuel Cells, Vibrational Spectroscopy, FTIR, Raman, Ex-situ Characterization, Degradation | ||||||||||||||||||||||||
Event Title: | 2nd Ertl Symposium | ||||||||||||||||||||||||
Event Location: | Stuttgart, Deutschland | ||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||
Event Start Date: | 24 June 2012 | ||||||||||||||||||||||||
Event End Date: | 27 June 2012 | ||||||||||||||||||||||||
Organizer: | DLR, Ertl Center | ||||||||||||||||||||||||
HGF - Research field: | Energy | ||||||||||||||||||||||||
HGF - Program: | Efficient Energy Conversion (old) | ||||||||||||||||||||||||
HGF - Program Themes: | E EV - Energy process technology (old) | ||||||||||||||||||||||||
DLR - Research area: | Energy | ||||||||||||||||||||||||
DLR - Program: | E EV - Energy process technology | ||||||||||||||||||||||||
DLR - Research theme (Project): | E - Elektrochemische Prozesse (old) | ||||||||||||||||||||||||
Location: | Stuttgart | ||||||||||||||||||||||||
Institutes and Institutions: | Institute of Engineering Thermodynamics > Electrochemical Energy Technology | ||||||||||||||||||||||||
Deposited By: | Gazdzicki, Dr. Pawel | ||||||||||||||||||||||||
Deposited On: | 23 Oct 2012 13:52 | ||||||||||||||||||||||||
Last Modified: | 24 Apr 2024 19:43 |
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