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Impact of Platinum Loading on Performance and Degradation of Polymer Electrolyte Fuel Cell Electrodes Studied in a Rainbow Stack

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/
Document Type:Article
Title:Impact of Platinum Loading on Performance and Degradation of Polymer Electrolyte Fuel Cell Electrodes Studied in a Rainbow Stack
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gazdzicki, PawelPawel.Gazdzicki (at) dlr.dehttps://orcid.org/0000-0002-5728-7861
Mitzel, JensJens.Mitzel (at) dlr.dehttps://orcid.org/0000-0001-8137-9689
Dreizler, AndreasAndreas.Dreizler (at) dlr.dehttps://orcid.org/0000-0003-2681-6350
Schulze, MathiasMathias.Schulze (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
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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