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Performance Enhancement of PEM Fuel Cell System by Oxygen Injection

Becker, Florian and Bleeck, Stefan and Gentner, Christoph and Montaner Rios, Gema and Sokolov, Igor and Kallo, Josef (2019) Performance Enhancement of PEM Fuel Cell System by Oxygen Injection. WHTC 2019, 03.06.2019 - 06.06.2019, Tokio, Japan.

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The use of polymer electrolyte fuel cells for electric power supply in the transport sector implicates changing environmental conditions and system requirements (e.g. warm and dry inlet air, reduced cooling capacity and arbitrary load steps). This can lead to inadmissible operating conditions, limiting the power output as well as the operational stability. Usually, air is supplied to the fuel cell system by a compressor. For that, electrical energy from the fuel cell or an external power source is required. To maximize the performance, the efficiency and the service life of the fuel cell system, an oxygen storage can be integrated to the system. By injecting additional oxygen on the cathode side, the compressor can be relieved and the compressed cathode gas can be cooled. Furthermore, the cell potential is increased, which reduces hydrogen consumption and the amount of heat to be dissipated by the system. This work focuses on experimental study of a 4 kW PEFC-system with additional oxygen injection. It is shown how the system performance is enhanced by oxygen injection compared to standard operation with a compressor. The gas consumption and required cooling capacity of the system are taken into account. Finally, arising prospects of this concept are discussed.

Item URL in elib:https://elib.dlr.de/128321/
Document Type:Conference or Workshop Item (Poster)
Title:Performance Enhancement of PEM Fuel Cell System by Oxygen Injection
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Becker, FlorianFlorian.Becker (at) dlr.deUNSPECIFIED
Bleeck, StefanStefan.Bleck (at) dlr.deUNSPECIFIED
Gentner, ChristophChristoph.Gentner (at) dlr.deUNSPECIFIED
Montaner Rios, GemaGema.MontanerRios (at) dlr.deUNSPECIFIED
Sokolov, IgorIgor.Sokolov (at) dlr.deUNSPECIFIED
Kallo, JosefJosef.Kallo (at) dlr.deUNSPECIFIED
Date:4 June 2019
Refereed publication:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:PEM Fuel Cell, Oxygen injection, Performance, Efficiency
Event Title:WHTC 2019
Event Location:Tokio, Japan
Event Type:international Conference
Event Dates:03.06.2019 - 06.06.2019
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: Hamburg
Institutes and Institutions:Institute of Engineering Thermodynamics > Energy System Integration
Deposited By: Becker, Florian
Deposited On:12 Jul 2019 13:20
Last Modified:12 Jul 2019 13:20

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