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Reversible and Irreversible Degradation in PEM Fuel Cells

Gazdzicki, Pawel and Schulze, Mathias and Friedrich, K. Andreas (2015) Reversible and Irreversible Degradation in PEM Fuel Cells. 6th International Conference on Fundamentals and Development Fuel Cell, 03.-05. Feb. 2015, Toulouse, Frankreich.

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Abstract

In the fuel cell community there is no common way to describe voltage decay rates in MEA durability test. On this poster a comparison and assessment of various mathematical approaches to determine a voltage decay rate is presented. It turned out that for MEA life time prediction it is most adequate is to use voltage values before/after regular voltage recovery steps to calculated a conclusive decay rate. In the context of reversible and irreversible voltage losses a mechanistic approach (fitting of V-I curves) allows to study voltage decay processes and recovery mechanisms related to, e.g. cell shutdown (soak time) or potential sweeping (CV). Even though CV and shutdown lead to different effect, the power recovery due to a simple shutdown which is technologically applicable seems to be more effective than potential sweeping up to 1.2 V.

Item URL in elib:https://elib.dlr.de/95494/
Document Type:Conference or Workshop Item (Poster)
Title:Reversible and Irreversible Degradation 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:February 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Degradation, Fuel Cell, Recovery, Voltage Loss
Event Title:6th International Conference on Fundamentals and Development Fuel Cell
Event Location:Toulouse, Frankreich
Event Type:international Conference
Event Dates:03.-05. Feb. 2015
Organizer:INP Toulouse
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:05 Mar 2015 11:38
Last Modified:05 Mar 2015 11:38

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