Gazdzicki, Pawel and Mitzel, Jens and Dreizler, Andreas and Schulze, Mathias and Friedrich, K. Andreas (2017) Impact of Platinum Loading on Performance and Degradation of Polymer Electrolyte Fuel Cell Electrodes Studied in a Rainbow Stack. Fuel Cells. Wiley. DOI: 10.1002/fuce.201700099 ISSN 1615-6846
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/fuce.201700099/full
Abstract
The paper focuses on the investigation of durability and performance of a low temperature polymer electrolyte membrane fuel cell (PEMFC) stack as a function of Pt loading in automotive test conditions. Major motivations are problems related to the need to reduce the amount of Pt in membrane electrode assemblies (MEAs) in order to make PEMFC more competitive. The particular challenge is to maintain sufficiently high performance and long-term durability. The study shows that for cathode Pt loadings below 0.2 mg cm-2 and for current densities exceeding 1 A cm-2 a sudden drop of performance is observed. The same threshold value is found for the increase of irreversible voltage losses which lead to an intense reduction of PEMFC durability for cathodic loadings below 0.2 mg cm-2. Another durability issue at cathodic Pt loadings < 0.4 mg cm-2 is the acceleration of reversible degradation, 2 which leads to a strong voltage drop during continues fuel cell operation (i.e. without a recovery interruption).
Item URL in elib: | https://elib.dlr.de/114910/ | ||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||
Title: | Impact of Platinum Loading on Performance and Degradation of Polymer Electrolyte Fuel Cell Electrodes Studied in a Rainbow Stack | ||||||||||||||||||
Authors: |
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Date: | October 2017 | ||||||||||||||||||
Journal or Publication Title: | Fuel Cells | ||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||
DOI : | 10.1002/fuce.201700099 | ||||||||||||||||||
Publisher: | Wiley | ||||||||||||||||||
ISSN: | 1615-6846 | ||||||||||||||||||
Status: | Published | ||||||||||||||||||
Keywords: | Fuel cells, rainbow stack, durability, Pt loading, irreversible degradation, reversible degradation | ||||||||||||||||||
HGF - Research field: | Energy | ||||||||||||||||||
HGF - Program: | Storage and Cross-linked Infrastructures | ||||||||||||||||||
HGF - Program Themes: | Fuel cells | ||||||||||||||||||
DLR - Research area: | Energy | ||||||||||||||||||
DLR - Program: | E SP - Energy Storage | ||||||||||||||||||
DLR - Research theme (Project): | E - Electrochemical Processes (Fuel Cells) | ||||||||||||||||||
Location: | Stuttgart | ||||||||||||||||||
Institutes and Institutions: | Institute of Engineering Thermodynamics > Electrochemical Energy Technology | ||||||||||||||||||
Deposited By: | Gazdzicki, Dr. Pawel | ||||||||||||||||||
Deposited On: | 24 Nov 2017 14:46 | ||||||||||||||||||
Last Modified: | 01 Nov 2019 03:00 |
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