This title appears in the Scientific Report :
2006
Please use the identifier:
http://dx.doi.org/10.1149/1.2213460 in citations.
Please use the identifier: http://hdl.handle.net/2128/2879 in citations.
Model of Direct Methanol Fuel Cell stack: local resistive 'spots' and the stack performance
Model of Direct Methanol Fuel Cell stack: local resistive 'spots' and the stack performance
We report on a model of a direct methanol fuel cell stack. The model is based on our recent model of a single cell with parallel straight channels. The stack model accounts for voltage loss due to in-plane currents in the bipolar plates and local 'spots' of contact resistance. A 100 cell s...
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Personal Name(s): | Kulikovsky, A. A. |
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Contributing Institute: |
Energieverfahrenstechnik; IWV-3 |
Published in: | Journal of the Electrochemical Society, 153 (2006) S. A1672 - A1677 |
Imprint: |
Pennington, NJ
Electrochemical Society
2006
|
Physical Description: |
A1672 - A1677 |
DOI: |
10.1149/1.2213460 |
Document Type: |
Journal Article |
Research Program: |
Rationelle Energieumwandlung |
Series Title: |
Journal of the Electrochemical Society
153 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/2879 in citations.
We report on a model of a direct methanol fuel cell stack. The model is based on our recent model of a single cell with parallel straight channels. The stack model accounts for voltage loss due to in-plane currents in the bipolar plates and local 'spots' of contact resistance. A 100 cell stack with a various number of spots is simulated. The effect of spots is twofold: they (i) increase local current and polarization voltages in the unaffected part of the cells, and (ii) induce in-plane parasitic current in bipolar plates. The growth of local current in the unaffected part of the cells reduces limiting current density of the stack. The stronger stack contamination with the spots, the lower the limiting current density. In the studied range of parameters, voltage loss in the bipolar plates is negligible. |