Abstract
Interfacial contact resistance between gas diffusion layers (GDLs) and bipolar plates (BPs) has a substantial effect on the performance loss of polymer electrolyte fuel cells (PEFCs). Particularly during the final manufacturing process of a fuel cell stack, an externally applied clamping load determines the extent of electrical contact between those two solid components. In order to have the least electrical contact loss, it is highly necessary to keep all PEFC components close each other without causing structural failure of fuel cell stacks. In the present work, we investigated the effect of the clamping pressure on extrinsic properties such as porosity and permeability, which is closely related to mass transfer of reactants. Also, the variance of interfacial electrical resistance was analyzed as a function of the stack clamping pressure or the compressed GDL thickness, which reflects the external clamping load. Then with these experimentally obtained material properties of GDL, computational efforts were made to account for the effect of the clamping pressure on the fuel cell performance.
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References
W.-K. Lee, C.-H. Ho, J. W. Van Zee and M. Murthy, The Effects of Compression and Gas Diffusion Layers on the Performance of a PEM Fuel Cell, J. Power Sources 84 (1999) 45–51.
M. Mikkola, Experimental Studies on Polymer Electrolyte Membrane Fuel Cell Stacks, M.S.Thesis, Helsinki Univ. of Tech., Finland, (2001).
E. A. Cho, U. S. Jeon, H. Y. Ha, S. A. Hong and I. H. Oh, Characteristics of composite bipolar plates for polymer electrolyte membrane fuel cells, J. Power Sources 125 (2004) 178–182.
H. Wang and J. A. Turner, Ferritic stainless steels as bipolar plate material for polymer electrolyte membrane, J. Power Sources 128 (2004) 193–200.
S. Um, C. Y. Wang and K. S. Chen, Computational Fluid Dynamics Modeling of Proton Exchange Membrane Fuel Cells, J. Electrochem. Soc. 147 (2000) 4485–4493.
V. Gurau, H. Liu and S. Kakac, Two-Dimensional Model for Proton Exchange Membrane Fuel Cells, AIChE J. 44(11) (1998) 2410–2422.
S. Dutta, S. Shimpalee and J. W. Van Zee, Three-Dimensional Numerical Simulation of Straight Channel PEM Fuel Cells, J. Appl. Echectrochem. 30 (2000) 135–146.
S. Um, Computational Modeling of Transport Phenomena and Electrochemical Kinetics in Proton Exchange Membrane Fuel Cells, Ph. D. Thesis, The Pennsylvania State University, USA, (2003).
H. Meng and C. Y. Wang, Electron Transport in PEFCs, J. Electrochem. Soc. 15 (2004) A358–A367.
T. Berning, D. M. Lu and N. Djilali, Three-Dimensional Computational Analysis of Transport Phenomena in a PEM Fuel Cell, J. Power Sources 106 (2002) 284–294.
N. P. Siegel, M. W. Ellis, D. J. Nelson and M. R. von Spakovsky, A Two-Dimensional Computational Model of a PEMFC with Liquid Water Transport, J. Power Sources 128(2) (2004) 173–184.
D. Natarajan and T. Van Nguyen, Three-Dimensional Effects of Liquid Water Flooding in the Cathode of a PEM Fuel Cell, J. Power Sources 115(1) (2003) 66–80.
U. Pasaogullari and C. Y. Wang, Two-phase Transport and the Role of Micro-Porous Layer in Polymer Electrolyte Fuel Cells, Electrochimica Acta, 49 (2004) 4359–4369.
A. Parthasarathy, S. Srinivasan and A. J. Appleby, Pressure dependence of the oxygen reduction reaction at the platinum microelectrode/nafion interface: electrode kinetics and mass transport, J. Electrochem. Soc. 139 (1992) 2856–2862.
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Lee, S.Y., Lee, KS. & Um, S. The structural variation of the gas diffusion layer and a performance evaluation of polymer electrolyte fuel cells as a function of clamping pressure. J Mech Sci Technol 22, 565–574 (2008). https://doi.org/10.1007/s12206-007-1211-6
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DOI: https://doi.org/10.1007/s12206-007-1211-6