This title appears in the Scientific Report :
2004
Please use the identifier:
http://dx.doi.org/10.1016/j.elecom.2004.05.015 in citations.
On the origin of voltage oscillations of a polymer electrolyte fuel cell in galvanostatic regime
On the origin of voltage oscillations of a polymer electrolyte fuel cell in galvanostatic regime
Polymer electrolyte fuel cell operating in galvanostatic regime may exhibit voltage oscillations. The model, which explains the nature of these oscillations is constructed. When inlet velocity of the cathode feed flow is low, lack of oxygen turns the cell into nonstable state, when two values of cel...
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Personal Name(s): | Kulikovsky, A. A. |
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Scharmann, H. / Wippermann, K. | |
Contributing Institute: |
Energieverfahrenstechnik; IWV-3 |
Published in: | Electrochemistry communications, 6 (2004) S. 729 - 736 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2004
|
Physical Description: |
729 - 736 |
DOI: |
10.1016/j.elecom.2004.05.015 |
Document Type: |
Journal Article |
Research Program: |
Brennstoffzelle |
Series Title: |
Electrochemistry Communications
6 |
Subject (ZB): | |
Publikationsportal JuSER |
Polymer electrolyte fuel cell operating in galvanostatic regime may exhibit voltage oscillations. The model, which explains the nature of these oscillations is constructed. When inlet velocity of the cathode feed flow is low, lack of oxygen turns the cell into nonstable state, when two values of cell voltage provide the same total current. Oscillations arise due to non-uniformity of oxygen concentration in the feed channel. The amplitude of oscillations increases with the deterioration of oxygen transport in the backing layer. Conditions, which determine the onset of the oscillatory regime are obtained and qualitatively verified experimentally. Possible ways to stop oscillations are discussed. (C) 2004 Elsevier B.V. All rights reserved. |