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/ | ||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||
Title: | LOCAL IN-SITU ANALYSIS OF PEM FUEL CELLS BY IMPEDANCE SPECTROSCOPY AND RAMAN MEASUREMENTS | ||||||||||||||||||||||||
Authors: |
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Date: | February 2011 | ||||||||||||||||||||||||
Journal or Publication Title: | ECS Transactions | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||
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: | 31 Oct 2020 04:34 |
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