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State-of-the-art polymer electrolyte fuel cells (PEFC): The remaining research challenges

Friedrich, Andreas and Gazdzicki, Pawel and Mitzel, Jens and Schulze, Mathias (2018) State-of-the-art polymer electrolyte fuel cells (PEFC): The remaining research challenges. CIMTEC 2018, 10.-14. Jun. 2018, Perugia, Italien.

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Abstract

Fuel cell technology has progressed significantly regarding performance and durability during the last decade. The remaining challenges will be discussed during this presentation. The presentation focuses on investigations of fuel cell durability and degradation at low Pt loadings. Major motivation is the need to reduce the amount of Pt in MEAs down to below 0.2 mgPt/cm2 in order to make PEFC more competitive and sustainable. The particular challenge is to maintain high performance and long-term durability concurrently with the Pt loading reduction which are conflicting goals In this context, a general problem is the lack of common procedures to reliably determine voltage loss rates in durability tests and to distinguished irreversible and reversible voltage losses. Regarding the influence of Pt loading on PEFC performance and durability our study shows that for cathode loadings below 0.2 mgPt/cm2 and for current densities >1 A/cm2, a sudden increase of mass transport resistance is observed. The same threshold value is found for the increase of irreversible voltage losses. These results are discussed with respect to the electrode structure, in particular with respect to the ionomer in the electrode.

Item URL in elib:https://elib.dlr.de/122584/
Document Type:Conference or Workshop Item (Speech)
Title:State-of-the-art polymer electrolyte fuel cells (PEFC): The remaining research challenges
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Friedrich, Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Gazdzicki, Pawelpawel.gazdzicki (at) dlr.dehttps://orcid.org/0000-0002-5728-7861
Mitzel, JensJens.Mitzel (at) dlr.dehttps://orcid.org/0000-0001-8137-9689
Schulze, Mathiasmathias.schulze (at) dlr.deUNSPECIFIED
Date:4 June 2018
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:State-of-the-art overview Polymer electrolyte membrane fuel cells Research challenges
Event Title:CIMTEC 2018
Event Location:Perugia, Italien
Event Type:international Conference
Event Dates:10.-14. Jun. 2018
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: Mitzel, Dr. Jens
Deposited On:29 Oct 2018 14:55
Last Modified:31 Jul 2019 20:20

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