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Visualization of GDL Deformation by Freezing of Water Using X-Ray Radiography

[+] Author Affiliations
Jongrok Kim, Junho Je, Moo Hwan Kim

POSTECH, Pohang, Korea

Massoud Kaviany

University of Michigan, Ann Arbor, MI

Sang Young Son

University of Cincinnati, Cincinnati, OH

Paper No. FuelCell2010-33281, pp. 735-737; 3 pages
  • ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2010 8th International Fuel Cell Science, Engineering and Technology Conference: Volume 1
  • Brooklyn, New York, USA, June 14–16, 2010
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 978-0-7918-4404-5 | eISBN: 978-0-7918-3875-4
  • Copyright © 2010 by ASME


During operation of Polymer Electrolyte Membrane Fuel Cells (PEMFCs), electro-chemical reactions generate water, which exists as a liquid because of the PEFMC’s low operating temperature. The water remains in the PEFMC after it is turned off. During the winter this water can freeze; associated increase in its volume deforms the gas diffusion layer (GDL). The deformed GDL reduces the cell’s power output and durability. In this investigation, X-ray microscopy was used demonstrate that water freezing changed the geometry of GDL by water freezing.

Copyright © 2010 by ASME



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