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Analysis of the Influence of Temperature and Gas Humidity on the Performance Stability of Polymer Electrolyte Membrane Fuel Cells

Garcia Sanchez, Daniel and Ruiu, Tiziana and Friedrich, K. Andreas and sanchez-monreal, juan and Vera, Marcos (2016) Analysis of the Influence of Temperature and Gas Humidity on the Performance Stability of Polymer Electrolyte Membrane Fuel Cells. Journal of The Electrochemical Society, 163 (3), F150-F159. Electrochemical Society, Inc.. DOI: 10.1149/2.0071603jes ISSN 0013-4651

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Abstract

Adequate water management represents one of the main challenges in the design and operation of polymer electrolyte membrane fuel cells. In this work, the influence of inlet gas humidification on cell performance is investigated by in-situ current density measurements obtained using the segmented cell approach. Particular attention is paid to the combined effect of cell temperature and relative humidity of the anode and cathode feed streams. When operated at 80◦C and low humidity conditions, the cell is seen to undergo a severe voltage decline that is not observed at 60◦C. The analysis shows that the variation with temperature of the water uptake rate of the gaseous streams plays a key role in determining the observed differences in performance stability. In the case of 60◦C operation, the water uptake rate of the cathode stream at 50% inlet relative humidity is roughly 30% of its value at 80◦C at the same humidification level, resulting in a significantly lower drying capacity. A simple balance of water model, able to explain the observed cell behavior, is finally presented and discussed.

Item URL in elib:https://elib.dlr.de/104772/
Document Type:Article
Title:Analysis of the Influence of Temperature and Gas Humidity on the Performance Stability of Polymer Electrolyte Membrane Fuel Cells
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Garcia Sanchez, Danieldaniel.garciasanchez (at) dlr.deUNSPECIFIED
Ruiu, TizianaTiziana.Ruiu (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
sanchez-monreal, juanCIIIUNSPECIFIED
Vera, MarcosCIIIUNSPECIFIED
Date:2016
Journal or Publication Title:Journal of The Electrochemical Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:163
DOI :10.1149/2.0071603jes
Page Range:F150-F159
Publisher:Electrochemical Society, Inc.
ISSN:0013-4651
Status:Published
Keywords:PEMFC, Water Management, current densities
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Fuel cells
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Fuel Cells) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Garcia Sanchez, Dr Daniel
Deposited On:13 Dec 2016 08:49
Last Modified:31 Jul 2019 20:02

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