Abstract
The mass diffusion overpotential distribution in a free-breathing proton exchange membrane fuel cell (PEMFC) was determined from current distribution measurements using a flow pulse approach. The current distribution measurements were conducted with a segmented flow-field plate. Flow pulses were fed to the cathode channels to form a uniform oxygen concentration distribution along the channels. Simultaneously, the cell resistance was monitored using the current interruption method. From the experimental data, the mass diffusion overpotential distribution was calculated using the Tafel equation. The results show that the mass diffusion overpotential in different parts of the cell may vary considerably, for example, at 180 mA cm−2 the mass diffusion overpotential difference between the bottom and top part of the cell was 0.1 V.
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Z.H. Wang, C.Y. Wang and K.S. Chen, J. Power Sources 94 (2001) 40.
D. Natarajan and T.V. Nguyen, J. Electrochem. Society 148 (2001) A1324.
S.J.C. Cleghorn, C.R. Derouin, M.S. Wilson and S. Gottesfeld, J. Appl. Electrochem. 28 (1998) 663.
J. Stumper, S.A. Campbell, D.P. Wilkinson, M.C. Johnson and M. Davis, Electrochim. Acta 43 (1998) 3773.
Ch. Wieser, A. Helmbold and E. Gulzow, J. Appl. Electrochem. 30 (2000) 803.
Ch. Wieser, A. Helmbold and W. Schnurnberger, Proc. Electrochem. Soc. 98–27 ('Proton Conducting Membrane Fuel Cells II') (1999) 457.
A.R. Kucernak, N.P. Brandon, V. Vesovic, S. Atkins, D.J.L. Brett and N. Vasileiadis, Proceedings of the 1st European PEFC Conference (2001), p. 297.
D.J.L. Brett, S. Atkins, N.P. Brandon, V. Vesovic, N. Vasileiadis and A.R. Kucernak, Electrochem. Commun. 3 (11) (2001) 628.
C. Hebling, M. Zedda, A. Schmitz, U. Groos, A. Hakenjos, J. Schumacher and K. Tüber, Fraunhofer Institut Solare Energiesysteme, ‘Annual Report 2000’ (2001), p. 52.
M. Noponen, T. Mennola, M. Mikkola, T. Hottinen and P. Lund, J. Power Sources 106 (2002) 304.
G. Squadrito, G. Maggio, E. Passalacqua, F. Lufrano and A. Patti, J. Appl. Electrochem. 29 (1999) 1449.
M. Mikkola, ‘Experimental Studies on Polymer Electrolyte Membrane Fuel Cell Stacks’, Master's thesis, Helsinki University of Technology (2001).
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Noponen, M., Hottinen, T., Mennola, T. et al. Determination of mass diffusion overpotential distribution with flow pulse method from current distribution measurements in a PEMFC. Journal of Applied Electrochemistry 32, 1081–1089 (2002). https://doi.org/10.1023/A:1021250418645
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DOI: https://doi.org/10.1023/A:1021250418645