Synchrotron-Radiographie und -Tomographie einer PEM-Brennstoffzelle
-
Henning Markötter
, Tobias Arlt , John Banhart , Ingo Manke , Heinrich Riesemeier , Philipp Krüger , Jan Haußmann , Merle Klages and Joachim Scholta
Abstract
Die dreidimensionalen Wasserverteilungen und -transportwege in den Gasdiffusionslagen (GDL) einer Polymer-Elektrolyt-Membran(PEM)-Brennstoffzelle werden bei verschiedenen Betriebsbedingungen analysiert. Die Methode der quasi In-situ-Röntgen-Tomographie wird für eine dreidimensionale Visualisierung der Wasserverteilung sowie der Struktur der GDL genutzt. Basierend auf Ergebnissen dynamischer radiographischer Messungen werden Wassertransportwege aufgefunden und anschließend mithilfe der Tomographie im Detail untersucht. Die Kombination dieser 2D- und 3D-Techniken erlaubt eine Identifizierung der Transportwege durch die GDL. zwei Mechanismen werden auf der Kathodenseite beobachtet: zum einen Wasser, das aus der GDL in den Kanal transportiert wird, und zum anderen Wasser, das in die GDL zurückgedrückt wird.
Abstract
The three dimensional water distribution and transport pathways in gas diffusion layers (GDL) of a polymer electrolyte membrane fuel cell (PEM FC) are analysed at various operating conditions. The method of quasi in-situ Xray tomography is used for a three dimensional visualization of the water distribution and the GDL structure. Based on the results of dynamic radiographic measurements water transport pathways are located and subsequently investigated in detail by means of tomography. The combination of 2D and 3D techniques allows for an identification of 3D transport pathways through the GDL.
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© 2013, Carl Hanser Verlag, München
Articles in the same Issue
- Inhalt/Contents
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- Fachbeiträge/Technical Contributions
- A Numerical Study on the Mechanical Properties and the Processing Behaviour of Composite High Strength Steels
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- Sea Water Effect on Failure Behaviour of Mechanically Fastened Composites
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- Processing of Finely disseminated Saudi Iron Ores
- Experimental and theoretical investigations on diffusion process for rare earth ores
- Vorschau/Preview
- Vorschau
- Kalender/Calendar
- Kalender
Articles in the same Issue
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- A Numerical Study on the Mechanical Properties and the Processing Behaviour of Composite High Strength Steels
- Coating Distribution Depending on Surface Microgeometry
- Sea Water Effect on Failure Behaviour of Mechanically Fastened Composites
- Synchrotron-Radiographie und -Tomographie einer PEM-Brennstoffzelle
- Fatigue Behaviour Monitoring of an AISI 1045 Carbon Steel using the Statistical-Based Z-Notched Approach
- Stress Analyses of Pump Gears Produced by Powder Metallurgy
- Surface Roughness Changes on β-Titanium Orthodontic Wires after Corrosion in Various Artificial Saliva Solutions
- 3D-Schallfeldsteuerung mit Matrixarrays für die Pipelineprüfung
- Evaluation of Geometric Accuracy and Thickness Variation in Incremental Sheet Forming Process
- The Effects of Process Parameters on the Recycling Efficiency of Used Aluminium Beverage Cans (UBCs)
- Processing of Finely disseminated Saudi Iron Ores
- Experimental and theoretical investigations on diffusion process for rare earth ores
- Vorschau/Preview
- Vorschau
- Kalender/Calendar
- Kalender