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Investigation of Water Droplet Behaviour on GDL Surface and in the Air Flow Channel of a PEM Fuel Cell under Flooding Conditions

플러딩 조건 하에서의 고분자전해질형 연료전지 GDL 표면과 공기극 유로 채널에서의 물방울 유동 특성 고찰

  • kim, Hansang (Department of Mechanical and Automotive Engineering, Seoul National Univ. of Science & Technology) ;
  • Min, Kyoungdoug (School of Mechanical and Aerospace Engineering, Seoul National University)
  • 김한상 (서울과학기술대학교 기계.자동차공학과) ;
  • 민경덕 (서울대학교 기계항공공학부)
  • Received : 2012.09.28
  • Accepted : 2012.10.26
  • Published : 2012.10.31

Abstract

Proper water management is crucial for the efficient operation of polymer electrolyte membrane (PEM) fuel cell. Especially, for automotive applications, A novel water management that can avoid both membrane dry-out and flooding is a very important task to achieve good performance and efficiency of PEM fuel cells. The aim of this study is to investigate the liquid water behavior on the gas diffusion layer (GDL) surface and in the cathode flow channel of a PEM unit fuel cell under flooding conditions. For this purpose, a transparent unit fuel cell is devised and fabricated by modifying the conventional PEM fuel cell design. The results of water droplet behavior under flooding conditions are mainly presented. The water distributions in the cathode flow channels with cell operating voltage are also compared and analyzed. Through this work, it is expected that the data obtained from this fundamental study can be effectively used to establish the basic water management strategy in terms of water removal from the flow channels in a PEM fuel cell stack.

Keywords

References

  1. J. Larminie and A. Dicks, Fuel Cell Systems Explained, John Wiley & Sons Ltd., UK, 2003.
  2. A. Hakenjos, H. Muenter, U. Wittstadt, and C. Hebling, "A PEM fuel cell for combined measurement of current and temperature distribution", Journal of Power Sources, Vol. 131, 2004, pp. 213-216. https://doi.org/10.1016/j.jpowsour.2003.11.081
  3. K. Tuber, D. Pócza, and C. Hebling, "Visualization of water buildup in the cathode of a transparent PEM fuel cell", Journal of Power Sources, Vol. 124, 2003, pp. 403-414. https://doi.org/10.1016/S0378-7753(03)00797-3
  4. X. G. Yang, F. Y. Zhang, A. L. Lubway, and C. Y. Wang, "Visualization of Liquid Water Transport in a PEFC", Electrochemical and Solid-State Letters, Vol. 7, 2004, pp. A408-A411. https://doi.org/10.1149/1.1803051
  5. I. S. Hussaini and C.-Y. Wang, "Visualization and quantification of cathode channel flooding in PEM fuel cells", Journal of Power Sources, Vol. 187, 2009, pp. 444-451. https://doi.org/10.1016/j.jpowsour.2008.11.030
  6. A. Bazylak, "Liquid water visualization in PEM fuel cells: A review", International Journal of Hydrogen Energy, Vol. 34, Issue 9, 2009, pp. 3845-3847. https://doi.org/10.1016/j.ijhydene.2009.02.084
  7. F.-B. Weng, A. Su, and C.-Y. Hsu, "The study of the effect of gas stoichiometric flow rate on the channel flooding and performance in a transparent fuel cell", International Journal of Hydrogen Energy, Vol. 32, Issue 6, 2007, pp. 666-676. https://doi.org/10.1016/j.ijhydene.2006.06.066
  8. M. I. Rosli, D. J. Borman, D. B. Ingham, M. S. Ismail, L. Ma, and M. Pourkashanian, "Transient PEM Fuel Cells for Direct Visualization Experiments", Journal of Fuel Cell Science and Technology, Vol. 7, Issue 6, 2010, pp. 061015-1-061015-7. https://doi.org/10.1115/1.4001353
  9. S. Kim, S. Shimpalee, and J.W. Van Zee, "Effect of Flow Field Design and Voltage Change Range on the Dynamic Behavior of PEMFCs", Journal of The Electrochemical Society, Vol. 152, No. 6, 2005, pp. A1265-1271. https://doi.org/10.1149/1.1901043
  10. Y. Wang and C.-Y. Wang, "Two-Phase Transients of Polymer Electrolyte Fuel Cells", Journal of The Electrochemical Society, Vol. 154, No. 7, 2007, pp. B636-B643. https://doi.org/10.1149/1.2734076
  11. H. Wu, P. Berg, and X. Li, "Non-isothermal transient modeling of water transport in PEM fuel cells", Journal of Power Sources, Vol. 165, 2007, pp. 232-243. https://doi.org/10.1016/j.jpowsour.2006.11.061
  12. J. Cho, H.-S. Kim, and K. Min, "Transient response of a unit proton-exchange membrane fuel cell under various operating conditions", Journal of Power Sources, Vol. 185, 2008, pp. 118-128. https://doi.org/10.1016/j.jpowsour.2008.06.073
  13. H.-S. Kim and K. Min, "Experimental investigation of dynamic responses of a transparent PEM fuel cell to step changes in cell current density with operating temperature", Journal of Mechanical Science and Technology, Vol. 22, 2008, pp. 2274-2285. https://doi.org/10.1007/s12206-008-0702-4
  14. S. Jeon and K. Kim, "Prediction of bypass flow rate through gas diffusion layer in PEMFC with serpentine flow channels", Trans. of the Korean Hydrogen and New Energy Society, Vol. 23, No. 4, 2012, pp. 293-299. https://doi.org/10.7316/KHNES.2012.23.4.293

Cited by

  1. Visualization of Water Droplets in the Simple Flow Channel and Rib Geometry for Polymer Electrolyte Membrane Fuel Cells (PEMFCs) vol.25, pp.4, 2014, https://doi.org/10.7316/KHNES.2014.25.4.386