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Mathematical Description of Voltage Decay Rates in PEM Fuel Cells

Gazdzicki, Pawel and Schulze, Mathias and Friedrich, K. Andreas (2015) Mathematical Description of Voltage Decay Rates in PEM Fuel Cells. 5th EUROPEAN PEFC AND H2 FORUM 2015, 30.06.-03.07.2015, Luzern, Schweiz.

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Abstract

In the fuel cell community there is no common way to describe degradation or voltage decay rates in durability test. This leads to a variety of possible approaches used to calculate voltage decay rates making the comparability of different tests difficult, especially when durability test are regularly interrupted by diagnostics or soak times in order to recover reversible voltage losses. Our study tries to address this issue by a mathematical description of voltage loss rates in PFSA based MEAs with Pt catalyst. In the presented approach we describe the decay rate changes by fitting an exponential and a linear decay curve to the experimental data after each refresh step, see right panel of figure. The obtained fit parameters allow a clear separation and an in-depth analysis of the different contributions of the decay rate.

Item URL in elib:https://elib.dlr.de/98463/
Document Type:Conference or Workshop Item (Speech)
Title:Mathematical Description of Voltage Decay Rates in PEM Fuel Cells
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gazdzicki, Pawelpawel.gazdzicki (at) dlr.deUNSPECIFIED
Schulze, Mathiasmathias.schulze (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Fuel Cell, Degradation
Event Title:5th EUROPEAN PEFC AND H2 FORUM 2015
Event Location:Luzern, Schweiz
Event Type:international Conference
Event Dates:30.06.-03.07.2015
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: Gazdzicki, Dr. Pawel
Deposited On:15 Oct 2015 10:59
Last Modified:15 Oct 2015 10:59

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