Analysis of an “Air Cathode” for a Micro Fuel Cell a Finite Element Analysis ( FEA ) using flexPDE Craig E. Nelson - Consultant Engineer Purpose of the Analysis: An electrochemical reaction in a long rectangular fuel cell cathode channel is studied. The work shown here is a “reverse engineered – independently formulated” version of a journal paper presentation: J. Yi and T. Nguyen, J. Electrochem. Soc., 146(1), 38 (1999). The purpose for this analysis was to check my model formulation methodology for plex, ponent, reactive-fluidic physical chemistry model, using a previously solved example as my guide and sanity check. The results presented here agree very closely with those reported in the refereed journal paper. Analysis Geometry Solution Domain Solution Domain Blocking Wall Catalytically Active “Wall” Blocking Wall Blocking Wall Inlet: Dry Air Outlet: Wet, Low O2 Air Numerical Experiment Results Mass Fraction – Oxygen – Contour Plot Mass Fraction – Oxygen – Surface Plot Mass Fraction – Water – Contour Plot Mass Fraction – Water – Surface Plot
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