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Performance of Membrane Electrode Assemblies: The Importance of Electrode Structure Ageing

Friedrich, Kaspar Andreas and Gazdzicki, Pawel and Schulze, Mathias and Morawietz, Tobias and Hiesgen, Renate (2016) Performance of Membrane Electrode Assemblies: The Importance of Electrode Structure Ageing. Gordon Research Conference Fuel Cells, 7-12.08.2016, Stonehill, USA.

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Abstract

To meet the requirements of membrane electrode assemblies (MEAs) for polymer electrolyte fuel cells (PEMFCs) for automotive applications it had been agreed by the European Commission that a durability of at least 5,000 h, corresponding to a degradation rate of 10 μV/h, and a high power density of 1 W/cm2 at 670 mV cell voltage need to be achieved. In order to achieve cost competitiveness of PEMFCTo make the PEMFC competitive, in parallel, the Pt amount needs to be reduced to values around or below of 0.2 mgPt/cm2. Clearly, the reduction of Pt loading leads to substantial reduction of power density and also to a reduced lifetime. IMPACT’s study on the relationship of catalyst loading with performance and degradation clearly shows that a reduction of electrochemical active surface area (ECSA) by a factor 2 leads to a performance reduction by around 10% and an increase of reversible degradation rate by a factor 4.

Item URL in elib:https://elib.dlr.de/109852/
Document Type:Conference or Workshop Item (Speech)
Title:Performance of Membrane Electrode Assemblies: The Importance of Electrode Structure Ageing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Friedrich, Kaspar AndreasAndreas.Friedrich (at) dlr.deUNSPECIFIED
Gazdzicki, Pawelpawel.gazdzicki (at) dlr.deUNSPECIFIED
Schulze, MathiasMathias.Schulze (at) dlr.deUNSPECIFIED
Morawietz, Tobiashochschule esslingenUNSPECIFIED
Hiesgen, Renaterenate.hiesgen (at) hs-esslingen.deUNSPECIFIED
Date:August 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Degradation of polymer fuel cells electrode structure
Event Title:Gordon Research Conference Fuel Cells
Event Location:Stonehill, USA
Event Type:international Conference
Event Dates:7-12.08.2016
Organizer:GRC
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Fuel cells
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Fuel Cells) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Friedrich, Prof.Dr. Kaspar Andreas
Deposited On:20 Dec 2016 09:22
Last Modified:20 Dec 2016 09:22

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