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The influence of CO on the current density distribution of high temperature polymer electrolyte membrane fuel cells

Boaventura, Marta and Sander, Heinz and Brandao, Lucia and Perez, Luis and Friedrich, K. Andreas and Mendes, Adelio (2011) The influence of CO on the current density distribution of high temperature polymer electrolyte membrane fuel cells. In: Proceedigs memory stick. European Fuel Cell Forum 2011, 28. Juni -1. Juli 2011, Luzern, Schweiz.

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Abstract

In this work, the effect of stepping the CO amount at the anode gas feed from 0.0 % to 1.5 % or 3.0 % on the feed of a high temperature polymer electrolyte membrane fuel cells (HT-PEMFC) is addressed using a PBI/ H3PO4 based MEA. The poisoning was assessed at 160 ºC based on the transient behavior of the fuel cell voltage and current density distribution. The current density distribution at similar voltage and global current density were also compared for pure hydrogen and CO balanced hydrogen. Furthermore, the I-V and power density curves were obtained. Two different cell anodes were used to obtain the current density distribution, 1) a metal segmented flow field and 2) a non-segmented graphite flow field where it was applied a printed circuit board as segmented current collector. The presence of CO caused a performance loss, which was aggravated for higher CO concentrations and higher global current densities. The current density distributions obtained with metal segmented flow field showed that the use of CO balanced hydrogen originated a spatial distribution of CO at the anode, which was more evident for higher CO concentrations and global current densities. On the other hand, no significant change on the current density distribution was observed with the graphite flow field. In this work, the effect of stepping the CO amount at the anode gas feed from 0.0 % to 1.5 % or 3.0 % on the feed of a high temperature polymer electrolyte membrane fuel cells (HT-PEMFC) is addressed using a PBI/ H3PO4 based MEA. The poisoning was assessed at 160 ºC based on the transient behavior of the fuel cell voltage and current density distribution. The current density distribution at similar voltage and global current density were also compared for pure hydrogen and CO balanced hydrogen. Furthermore, the I-V and power density curves were obtained. Two different cell anodes were used to obtain the current density distribution, 1) a metal segmented flow field and 2) a non-segmented graphite flow field where it was applied a printed circuit board as segmented current collector. The presence of CO caused a performance loss, which was aggravated for higher CO concentrations and higher global current densities. The current density distributions obtained with metal segmented flow field showed that the use of CO balanced hydrogen originated a spatial distribution of CO at the anode, which was more evident for higher CO concentrations and global current densities. On the other hand, no significant change on the current density distribution was observed with the graphite flow field.

Item URL in elib:https://elib.dlr.de/71423/
Document Type:Conference or Workshop Item (Speech)
Title:The influence of CO on the current density distribution of high temperature polymer electrolyte membrane fuel cells
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Boaventura, MartaFaculdade de Engenharia da Universidade do PortoUNSPECIFIED
Sander, Heinzheinz.sander (at) dlr.deUNSPECIFIED
Brandao, LuciaFaculdade de Engenharia da Universidade do PortoUNSPECIFIED
Perez, LuisFaculdade de Engenharia da Universidade do PortoUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Mendes, AdelioFaculdade de Engenharia da Universidade do PortoUNSPECIFIED
Date:July 2011
Journal or Publication Title:Proceedigs memory stick
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Spirig, MichaelUNSPECIFIED
Bucheli, OlivierUNSPECIFIED
Status:Published
Keywords:high temperature polymer fuel cell; CO in H2
Event Title:European Fuel Cell Forum 2011
Event Location:Luzern, Schweiz
Event Type:international Conference
Event Dates:28. Juni -1. Juli 2011
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E EV - Energy process technology (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Elektrochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Friedrich, Prof.Dr. Kaspar Andreas
Deposited On:08 Nov 2011 10:49
Last Modified:08 Nov 2011 10:49

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