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LOCAL IN-SITU ANALYSIS OF PEM FUEL CELLS BY IMPEDANCE SPECTROSCOPY AND RAMAN MEASUREMENTS

Gülzow, Erich and Schulze, Mathias and Friedrich, Andreas and Fischer, Peter and Bettermann, Hans (2011) LOCAL IN-SITU ANALYSIS OF PEM FUEL CELLS BY IMPEDANCE SPECTROSCOPY AND RAMAN MEASUREMENTS. ECS Transactions, 30 (1), pp. 65-76. Electrochemical Society, Inc.. DOI: 10.1149/1.3562460

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Abstract

An understanding of the processes inside of low temperature fuel cells on a local scale is required for an effective improvement strategy. For this purpose in situ Raman spectroscopy and local impedance spectroscopy is being developed. The contribution describes the modifications to the cell, and installations of additional devices and the experimental detection systems for integrating both methods into a single cell set up. First results to verify the combined results were carried out and are presented. In the case of the local impedance with segmented cells the additional effort for the simultaneous frequency analysis of all segments is described. The Raman signals of hydrogen, oxygen and water from the channels of the flow field are shown and first measurements of gas composition along the fuel path are analyzed.

Item URL in elib:https://elib.dlr.de/72352/
Document Type:Article
Title:LOCAL IN-SITU ANALYSIS OF PEM FUEL CELLS BY IMPEDANCE SPECTROSCOPY AND RAMAN MEASUREMENTS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gülzow, Ericherich.guelzow (at) dlr.deUNSPECIFIED
Schulze, Mathiasmathias.schulze (at) dlr.deUNSPECIFIED
Friedrich, Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Fischer, PeterHHUDUNSPECIFIED
Bettermann, HansHHUDUNSPECIFIED
Date:February 2011
Journal or Publication Title:ECS Transactions
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:30
DOI :10.1149/1.3562460
Page Range:pp. 65-76
Publisher:Electrochemical Society, Inc.
Status:Published
Keywords:EIS, Electrchemical Impedance Spectroscopy, Fuel Cell, Diagnostic
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: Gülzow, Erich
Deposited On:08 Dec 2011 10:34
Last Modified:06 Sep 2019 15:24

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