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The Stress Distribution Analysis of PEMFC GDL using FEM

유한요소법을 이용한 고분자전해질연료전지 기체확산층의 응력분포 연구

  • Kim, Chulhyun (Advanced Energy Technology, University of Science & Technology) ;
  • Sohn, Youngjun (Fuel Cell Research Center, Korea Institute Of Energy Research) ;
  • Park, Gugon (Fuel Cell Research Center, Korea Institute Of Energy Research) ;
  • Kim, Minjin (Fuel Cell Research Center, Korea Institute Of Energy Research) ;
  • Lee, Jonguk (The 3rd Research Team, Honam Petrochemical Corp) ;
  • Kim, Changsoo (Fuel Cell Research Center, Korea Institute Of Energy Research) ;
  • Choi, Yusong (Agency for defense development) ;
  • Cho, Sungbaek (Agency for defense development)
  • Received : 2012.05.31
  • Accepted : 2012.10.26
  • Published : 2012.10.31

Abstract

A proper stacking force and assembly are important to the performance of fuel cell. Improper assembly pressure may lead to leakage of fuels and high interfacial contact resistance, excessive assembly pressure may result in damage to the gas diffusion layer and other components. The pressure distribution of gas diffusion layer is important to make interfacial contact resistance less for stack performance. To analyze the influence of design parameter factors for pressure distribution, and to optimize stack design, DOE (Design of Experiment) was used for polymer electrolyte membrane fuel cell stack pressure test. As commonly known, the higher clamping force improves the fuel cell stack performance. However, non-uniformity of stress distribution is also increased. It shows that optimization between clamping force and stress distribution is needed for well designed structure of fuel cell stack. In this study, stack design optimization method is suggested by using FEM (Finite Element Methode) and DOE for light-weighted fuel cell stack.

Keywords

References

  1. K. Y. Kim and Y. J. Sohn, "Numerical Study on the Effect of GDL Porposity on the PEMFC Performance" Journal of Mechanical Science and Technology, Vol 33, No 12, 2009, 1022-1030
  2. W. K. Lee and C. H. Ho, "The effects of compression and gas diffusion layers on the performance of a PEM fuel cell" Journal of Power Sources. Vol. 84, No. 1, 1999, pp. 45-51. https://doi.org/10.1016/S0378-7753(99)00298-0
  3. J. M. Heo, Y. J. Shon, "Study of stress distribution on GDL and gasket of PEM fuel cell" Journal of Mechanical Science and Technology, 2009, pp 652-654.
  4. W. D Kim, "Design and analysis of the hyperelastic rubber mechanical components" KIM M Report, Korea, 1999.
  5. B. J. KIM and S. D LIM, "The Effect of Stack Clamping Pressure on the performance of a Miniture PEMFC Stack" Trans. Of the Korean Hydrogen and New Energy Society, Vol. 20. No 6, 2009, pp. 499-504.
  6. E. J Ahn and Y. G Yoon, "Property Changes of Gas Diffusion Layer in a PEFC by Compression" Trans. Of the Korean Hydrogen and New Energy Society, Vol. 17, No. 3, 2006, pp. 347-352.
  7. Ahmet Kusoglu and Anette M, Karlsson, "Mechanical response of fuel cell membranes subjected to a hygro-thermal cycle" Journal of Power Sources, Vol. 161, Issue 2, 2006, pp. 987-996. https://doi.org/10.1016/j.jpowsour.2006.05.020