| Download | - View accepted manuscript: Calculation procedure for mass transfer in fuel cells (PDF, 622 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1016/j.jpowsour.2003.09.053 |
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| Author | Search for: Beale, S. B.1 |
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| Affiliation | - National Research Council Canada. NRC Institute for Chemical Process and Environmental Technology
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| Format | Text, Article |
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| Subject | fuel cells; transport phenomena; mass transfer; concentration polarisation; over-potential; diffusion |
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| Abstract | An analysis of mass transfer losses, or concentration over-potentials in fuel cells is provided. An elementary theory, based on an equivalent film thickness, as proposed in some texts, is derived. This is followed by a more rigorous theoretical treatment of mass transfer theory, for which the mass transfer factor is obtained as a function of the driving force. The solution for the driving force is derived, for the well-known one-dimensional convection–diffusion problem. It is shown that mass transfer in planar and square geometries approximates this idealised situation. A linearised theory, appropriate for low mass flow rates is also presented. The methodology is illustrated using the simple example of a solid oxide fuel cell (SOFC). It is shown that the simplified theory is only applicable for very dilute binary mixtures. A step-by-step procedure for computing mass transfer in fuel cells is detailed, together with a discussion of the scope and range of application of the results. |
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| Publication date | 2004-04 |
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| Terms of use | - You may reproduce (print, make photocopies, or download) the accepted manuscript without permission for non-commercial purposes (research, education, and private study), on the condition that you provide proper attribution of the source in all copies.
- Vous pouvez reproduire (imprimer, faire des photocopies ou télécharger) le manuscrit accepté sans autorisation à des fins non commerciales (recherche, éducation et études privées), à condition de fournir la source appropriée dans toutes les copies.
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| Access condition | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 47886 |
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| NPARC number | 8925708 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 29b58b83-e7eb-43f4-9b7f-4b99db48801b |
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| Record created | 2009-04-23 |
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| Record modified | 2020-04-17 |
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