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In-Situ Investigation of Water Transport in an Operating PEM Fuel Cell Using Neutron Radiography: Part 2 - Transient Water Accumulation in an Interdigitated Cathode Flow Field

Published

Author(s)

Jon P. Owejan, T Trabold, David L. Jacobson, D Baker, Daniel S. Hussey, Muhammad D. Arif

Abstract

An interdigitated cathode flow field was tested in-situ with neutron radiography to measure the water transport through the porous gas diffusion layer in a PEM fuel cell. Constant current density to open circuit cycles were tested and the resulting liquid water accumulation and dissipation rates with in-plane water distributions are correlated to measured pressure differential between inlet and outlet gas streams. The effect of varying reactant gas relative humidity on liquid water accumulation is also demonstrated. These results provide evidence that reactant gas establishes a consistent in-plane transport path through diffusion layer and liquid water accumulates as a result of decreased pressure in these regions.
Citation
International Journal of Heat and Mass Transfer
Volume
172

Keywords

fuel cell, interdigitated, neutron radiography, visualization, water management

Citation

Owejan, J. , Trabold, T. , Jacobson, D. , Baker, D. , Hussey, D. and Arif, M. (2007), In-Situ Investigation of Water Transport in an Operating PEM Fuel Cell Using Neutron Radiography: Part 2 - Transient Water Accumulation in an Interdigitated Cathode Flow Field, International Journal of Heat and Mass Transfer, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=841167 (Accessed May 21, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created July 26, 2007, Updated October 12, 2021