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Investigation of Locally Resolved Current Density Distribution of Segmented PEM Fuel Cells to Detect Malfunctions

Lin, Rui and Sander, Heinz and Gülzow, Erich and Friedrich, K. Andreas (2010) Investigation of Locally Resolved Current Density Distribution of Segmented PEM Fuel Cells to Detect Malfunctions. ECS Transactions, 26 (1). Electrochemical Society, Inc.. DOI: 10.1149/1.3428993

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Abstract

With the aid of PCB technology, current density distribution could be achieved by measuring the local current density inside the fuel cell, which would be more precisely reflecting the local electrochemical reaction. An important application of segmented cell technology was used for in-situ error detection of the evolution of membrane leakage. From the evolution of current density distributions, starting locations of membrane leakages and their spreading could be detected. The effect of operation conditions could be found: the steeply decreased pressure and the fast cooling of the local membrane was the main reason for the degradation of the membrane. It caused large temperature gradient in different local membranes, which resulted in inhomogeneous current density distribution and mechanical strain and stress. With the aid of segmented cell, malfunction could be detected at an early stage and thereby catastrophic failure of the whole stack may be avoided.

Item URL in elib:https://elib.dlr.de/66745/
Document Type:Article
Title:Investigation of Locally Resolved Current Density Distribution of Segmented PEM Fuel Cells to Detect Malfunctions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lin, RuiSchool of Automotive Studies, Tongji UniversityUNSPECIFIED
Sander, Heinzheinz.sander (at) dlr.deUNSPECIFIED
Gülzow, Ericherich.guelzow (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:2010
Journal or Publication Title:ECS Transactions
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:26
DOI :10.1149/1.3428993
Publisher:Electrochemical Society, Inc.
Status:Published
Keywords:Local Current Density Distribution, Polymer Electrolyte Fuel Cell
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E EV - Energy process technology (old), E BZ - Fuel cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology, E BZ - Fuel cells
DLR - Research theme (Project):E - Elektrochemische Prozesse (old), E - Membran-Brennstoffzellen (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Friedrich, Prof.Dr. Kaspar Andreas
Deposited On:29 Nov 2010 16:06
Last Modified:06 Sep 2019 15:24

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