This title appears in the Scientific Report :
2021
Please use the identifier:
http://dx.doi.org/10.1016/j.ijhydene.2020.02.107 in citations.
Please use the identifier: http://hdl.handle.net/2128/26909 in citations.
Comparison of the Single-Cell Testing, Short-Stack Testing and Mathematical Modeling Methods for a Direct Methanol Fuel Cell
Comparison of the Single-Cell Testing, Short-Stack Testing and Mathematical Modeling Methods for a Direct Methanol Fuel Cell
In this paper, a comparison between direct methanol fuel cell (DMFC) measurements performed on a single cell and a short-stack, and the results of a mathematical model for a DMFC, is presented. The testing of a short-stack, which consists of 5 cells with an active area of 315 cm2, was performed at v...
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Personal Name(s): | Karaoglan, Mustafa Umut (Corresponding author) |
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Coplan, Can Ozgur / Glüsen, Andreas / Müller, Martin / Stolten, Detlef / Kuralay, Nusret Sefa | |
Contributing Institute: |
Technoökonomische Systemanalyse; IEK-3 Elektrochemische Verfahrenstechnik; IEK-14 |
Published in: | International journal of hydrogen energy, 46 (2021) 6, S. 4844-4856 |
Imprint: |
New York, NY [u.a.]
Elsevier
2021
|
DOI: |
10.1016/j.ijhydene.2020.02.107 |
Document Type: |
Journal Article |
Research Program: |
Societally Feasible Transformation Pathways Effective System Transformation Pathways Electrochemistry for Hydrogen Fuel Cells |
Link: |
Published on 2020-03-27. Available in OpenAccess from 2021-03-27. |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/26909 in citations.
In this paper, a comparison between direct methanol fuel cell (DMFC) measurements performed on a single cell and a short-stack, and the results of a mathematical model for a DMFC, is presented. The testing of a short-stack, which consists of 5 cells with an active area of 315 cm2, was performed at various current densities, permeation current densities, and cathode flow rates (CFR) in order to determine the voltage outputs of each cell. Methanol concentration and stack temperature results obtained from short-stack testing were then integrated into the single cell test and single cell mathematical model as the input parameters. For the mathematical modelling, transport equations originating from methanol, water, and oxygen were coupled with the electrochemical relations. Therefore, a comparison between these three methods is made in order to gain a deeper understanding of the effects of the operating parameters on DMFC performance. This study showed that the model could describe experimental results well when lower methanol concentrations (under 1.2 M) and temperature (under 60 °C) values are used as input parameters. The results also show very good agreement at lower methanol permeation rates and therefore lower temperatures. It is found that the voltage output for a given current density is higher for the theoretical model than that of the experimental studies; and the differences in the results can be up to 0.04 V for a cell. Previous article in issue |