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Modeling of Two-Phase Flow and Catalytic Reaction Kinetics for DMFCs

  • J. Fuhrmann
  • K. Gärtner
Part of the Topics in Applied Physics book series (TAP, volume 113)
In this chapter, we discuss more deeply two aspects of a numerical model for direct methanol fuel cells published in [ 1]. This model describes in detail the processes in the membrane electrode assembly (MEA) of a direct methanol fuel cell (DMFC). We assume that the MEA consists of the following parts:
  • an anodic porous transport layer (PTL);

  • an anodic reaction zone consisting of the same material as the PTL, enhanced with catalyst and partially containing membrane material;

  • a proton-conducting polymer electrolyte membrane (PEM), typically Nafion;

  • a cathodic reaction zone with similar composition as the anodic reaction zone;

  • a cathodic PTL with similar composition as the anodic PTL.

On the exterior, the anodic resp. cathodic PTL is equipped with electrical contacts (Anode, resp. Cathode) and interfaces to the transport channels containing a fluid – gas mixture with given phase and partial pressures.

The overall reaction taking place in the cell is the combustion of methanol
$$2CH_3OH +...

Keywords

Porous Medium Capillary Pressure Relative Permeability Occupation Number Direct Methanol Fuel Cell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • J. Fuhrmann
    • 1
  • K. Gärtner
  1. 1.Physics DepartmentMoscow State UniversityRussia

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