The Reactant Concentration Simulation at Catalyst Membrane Interface of a MICRO PEM Fuel Cell

  • Sean Goudy
  • S. O. Bade Shrestha
  • Iskender Sahin

Abstract

Modeling is increasingly widely used to optimization, improvement and cost reduction efforts of the fuel cell technology. Although there are many computational models in literature that describe the behavior of Polymer Electrolyte Membrane (PEM) fuel cell, there is a only few models that simulates the catalyst surface concentration of reactant gases at the catalyst-membrane layer interface. A modeling of a PEM fuel cell is presented to determine both the bulk reactant concentrations and the catalyst surface concentrations at the catalyst layer-membrane layer interface. The results suggest that the reactant deficiencies experienced at high current densities are localized to the catalyst surface. However, the bulk concentration of reactant is not zero, and, in most cases, the bulk concentration of the reactant gases is significantly greater than zero. In actuality, it is the catalyst surface, which is being depleted of reactant, and, at the limiting current density, the surface concentrations of reactant gases are zero. This treatment develops explicitly link between the fuel cell overpotentials and the movement of reactants.

DOI: http://dx.doi.org/10.3126/jie.v9i1.10662

Journal of the Institute of Engineering

Vol. 9, No. 1, pp. 1–17

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Author Biographies

Sean Goudy
Department of Mechanical and Aeronautical Engineering,Western Michigan University, Kalamazoo, Michigan
S. O. Bade Shrestha
Department of Mechanical and Aeronautical Engineering,Western Michigan University, Kalamazoo, Michigan
Iskender Sahin
Department of Mechanical and Aeronautical Engineering,Western Michigan University, Kalamazoo, Michigan
Published
2014-06-28
How to Cite
Goudy, S., Bade Shrestha, S., & Sahin, I. (2014). The Reactant Concentration Simulation at Catalyst Membrane Interface of a MICRO PEM Fuel Cell. Journal of the Institute of Engineering, 9(1), 1-17. https://doi.org/10.3126/jie.v9i1.10662
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Articles