In-situ measurements of water transfer due to different mechanisms in a PEM fuel cell

Attila Husar, Andrew Higier, Hongtan Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Water management is of critical importance in a proton exchange membrane (PEM) fuel cell. Yet there are very limited studies of water transfer through the membrane and no data are available for water transfer due to individual mechanisms through the membrane electrode assembly (MEA) in an operational fuel cell. Thus it is the objective of this study to measure water transfer through the MEA due to different mechanisms through the membrane electrode assembly (MEA) of an operational PEM fuel cell. The three different mechanisms of water transfer, i.e., electro-osmotic drag, diffusion and hydraulic permeation were isolated by specially imposed boundary conditions. Therefore water transfer through the MEA due to each mechanism could be measured separately. In this study, all the data were collected in an actual assembled operational fuel cell, and some of the data were collected while the fuel cell was generating power. The measured results showed that water transfer due to hydraulic permeation, i.e. the pressure difference between the anode and cathode is at least an order of magnitude lower than those due to other two mechanisms. The data for water transfers due to electro-osmosis and diffusion through the MEA are in good agreement with some of the data and model predications in the literature for the membrane. The methodology used in this study is simple and can be easily adopted for in-situ water transfer measurement due to different mechanisms in actual PEM fuel cells without any cell modifications.

Original languageEnglish
Title of host publicationASME International Mechanical Engineering Congress and Exposition, Proceedings
Pages1381-1389
Number of pages9
Volume8 PART B
DOIs
StatePublished - May 29 2008
EventASME International Mechanical Engineering Congress and Exposition, IMECE 2007 - Seattle, WA, United States
Duration: Nov 11 2007Nov 15 2007

Other

OtherASME International Mechanical Engineering Congress and Exposition, IMECE 2007
CountryUnited States
CitySeattle, WA
Period11/11/0711/15/07

Fingerprint

Proton exchange membrane fuel cells (PEMFC)
Membranes
Water
Electrodes
Fuel cells
Permeation
Hydraulics
Electroosmosis
Water management
Drag
Anodes
Cathodes
Boundary conditions

Keywords

  • Fuel cell
  • PEM
  • Water transport

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Husar, A., Higier, A., & Liu, H. (2008). In-situ measurements of water transfer due to different mechanisms in a PEM fuel cell. In ASME International Mechanical Engineering Congress and Exposition, Proceedings (Vol. 8 PART B, pp. 1381-1389) https://doi.org/10.1115/IMECE2007-41419

In-situ measurements of water transfer due to different mechanisms in a PEM fuel cell. / Husar, Attila; Higier, Andrew; Liu, Hongtan.

ASME International Mechanical Engineering Congress and Exposition, Proceedings. Vol. 8 PART B 2008. p. 1381-1389.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Husar, A, Higier, A & Liu, H 2008, In-situ measurements of water transfer due to different mechanisms in a PEM fuel cell. in ASME International Mechanical Engineering Congress and Exposition, Proceedings. vol. 8 PART B, pp. 1381-1389, ASME International Mechanical Engineering Congress and Exposition, IMECE 2007, Seattle, WA, United States, 11/11/07. https://doi.org/10.1115/IMECE2007-41419
Husar A, Higier A, Liu H. In-situ measurements of water transfer due to different mechanisms in a PEM fuel cell. In ASME International Mechanical Engineering Congress and Exposition, Proceedings. Vol. 8 PART B. 2008. p. 1381-1389 https://doi.org/10.1115/IMECE2007-41419
Husar, Attila ; Higier, Andrew ; Liu, Hongtan. / In-situ measurements of water transfer due to different mechanisms in a PEM fuel cell. ASME International Mechanical Engineering Congress and Exposition, Proceedings. Vol. 8 PART B 2008. pp. 1381-1389
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