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Atomic Force Microscopy Investigation of Polymer Fuel Cell Gas Diffusion Layers Before and After Operation

Hiesgen, Renate and Wehl, Ines and Friedrich, K. Andreas and Schulze, Mathias and Haug, Andrea and Bauder, Alexander and Carrera, Alejo and Yuan, Xiao-Zi and Wang, Haijiang (2010) Atomic Force Microscopy Investigation of Polymer Fuel Cell Gas Diffusion Layers Before and After Operation. ECS Transactions, 28 (27), pp. 79-84. Electrochemical Society, Inc.. DOI: 10.1149/1.3496615

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Abstract

The ageing of microporous layers (MPL) of fuel cell gas diffusion layers has been analyzed using a special atomic force microscopy technique. The mean local adhesion force on the surface as well as the energy dissipation on the same area has been used as a measure for changes of surface properties corresponding to ageing of the MPL. The samples have been studied before and after fuel cell operation. In all cases, the changes due to operation are stronger on the cathode compared to the anode. The results from measurements under comparably dry and wet conditions are consistent with an increased loss of polytetrafluoroethylene (PTFE) at the cathode which leads to a hydrophobicity loss.

Item URL in elib:https://elib.dlr.de/66710/
Document Type:Article
Title:Atomic Force Microscopy Investigation of Polymer Fuel Cell Gas Diffusion Layers Before and After Operation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hiesgen, Renaterenate.hiesgen (at) hs-esslingen.deUNSPECIFIED
Wehl, Inesines.wehl (at) hs-esslingen.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Schulze, Mathiasmathias.schulze (at) dlr.deUNSPECIFIED
Haug, Andreaandrea.haug (at) dlr.deUNSPECIFIED
Bauder, Alexanderalexander.bauder (at) dlr.deUNSPECIFIED
Carrera, AlejoUniversida Nacional de CordobaUNSPECIFIED
Yuan, Xiao-ZiNational Research CouncilUNSPECIFIED
Wang, HaijiangNational Research Council CanadaUNSPECIFIED
Date:September 2010
Journal or Publication Title:ECS Transactions
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:28
DOI :10.1149/1.3496615
Page Range:pp. 79-84
Publisher:Electrochemical Society, Inc.
Status:Published
Keywords:Atomic Force Microscopy; Gas Diffusion Layers, Polymer Fuel Cell
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E EV - Energy process technology (old), E BZ - Fuel cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology, E BZ - Fuel cells
DLR - Research theme (Project):E - Elektrochemische Prozesse (old), E - Membran-Brennstoffzellen (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Friedrich, Prof.Dr. Kaspar Andreas
Deposited On:30 Nov 2010 14:54
Last Modified:06 Sep 2019 15:24

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