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Effect of Segmented Contacts on Fuel Cell Performance Using 3-D Modelling

Excerpt

For miniature fuel cells, people have reported flow field patterns in silicon and other technologies such as PCB, rather than the conventional graphite based flow field plates. As silicon is a not a good conductor, electrical contacts have to be made to the GDL for taking the power from the fuel cell to the outside. This may require segmented contacts to Gas Diffusion Layer (GDL) which do not cover the entire area of fuel cell. Here we build a three dimensional model for a fuel cell in which current collection is carried out by segmented contacts attached to the GDL. Seven different ways of attaching contacts to the GDL is studied. The results were compared with a fabricated un-segmented cell. The 3-D model was done in Comsol multiphysics.

  • Abstract
  • Key Words
  • 1. Introduction
  • 2. Experimental
  • 3.The Model
  • 4. Results and Discussion
  • 5. Conclusion
  • References

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