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Cited by 268

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Neutron Imaging Technique for In Situ Measurement of Water Transport Gradients within Nafion in Polymer Electrolyte Fuel Cells

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Bellows, R. J., Lin, M. Y., Arif, M., Thompson, A. K., Jacobson, D.·1999·Journal of The Electrochemical Society
DOI 10.1149/1.1391727
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Abstract

Water transport is an important consideration in the optimization of polymer electrolyte fuel cell (PEFC) performance, affecting both internal resistance and cathode polarization losses. Novel experiments are described using neutron radiography to measure water gradient profiles within Nafion® in an operating PEFC. Preliminary neutron intensity gradients show qualitative agreement with the expected response of membrane water content to changes in feed gas humidification and fuel cell current. Previous experimental measurements of similar water gradients have generally relied on "integral" measurements such as ac impedance spectroscopy which cannot probe details of the gradient within the membrane. This is one of the first "differential" measurements of water gradients within Nafion. © 1999 The Electrochemical Society. All rights reserved.

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Authors
Bellows, R. J., Lin, M. Y., Arif, M., Thompson, A. K., & Jacobson, D.
Venue
Journal of The Electrochemical Society
Publisher
The Electrochemical Society
Published
1999-03-01
Volume
146
Issue
3
Pages
1099-1103
ISSN
  • 0013-4651 (ISSN-L)
  • 1945-7111
DOI
10.1149/1.1391727
OpenAlex
W2040339512
Cited by
268
References
0
FWCI
2.67
Type
journal article
Language
en
Open access
bronze

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