Performance improvement of proton exchange membrane fuel cell by using annular shaped geometry
▶ Investigation a new geometry of the PEM fuel cell. ▶ Investigation the effect of number of connections between GDL and bipolar plate. ▶ Investigation the effect of changing geometry on performance and gas concentration. ▶ Understanding the many interacting, complex electrochemical and transport ph...
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Published in | Journal of power sources Vol. 196; no. 5; pp. 2661 - 2668 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.03.2011
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | ▶ Investigation a new geometry of the PEM fuel cell. ▶ Investigation the effect of number of connections between GDL and bipolar plate. ▶ Investigation the effect of changing geometry on performance and gas concentration. ▶ Understanding the many interacting, complex electrochemical and transport phenomena that cannot be studied experimentally.
A complete three-dimensional and single phase CFD model for a different geometry of proton exchange membrane (PEM) fuel cell is used to investigate the effect of using different connections between bipolar plate and gas diffusion layer on the performances, current density and gas concentration. The proposed model is a full cell model, which includes all the parts of the PEM fuel cell, flow channels, gas diffusion electrodes, catalyst layers and the membrane. Coupled transport and electrochemical kinetics equations are solved in a single domain; therefore no interfacial boundary condition is required at the internal boundaries between cell components.
This computational fluid dynamics code is used as the direct problem solver, which is used to simulate the three-dimensional mass, momentum and species transport phenomena as well as the electron- and proton-transfer process taking place in a PEMFC that cannot be investigated experimentally. The results show that the predicted polarization curves by using this model are in good agreement with the experimental results. Also the results show that by increasing the number of connection between GDL and bipolar plate the performance of the fuel cell enhances. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0378-7753 1873-2755 |
DOI: | 10.1016/j.jpowsour.2010.11.052 |