Nonlinear Sciences > Chaotic Dynamics
[Submitted on 16 Jun 2003]
Title:Steady State Multiplicity in a Polymer Electrolyte Membrane Fuel Cell
View PDFAbstract: A simplified differential reactor model that embodies the essential physics controlling PEM fuel cell (PEM-FC) dynamics is presented. A remarkable analogy exists between water management in the differential PEM-FC and energy balance in the classical exothermic stirred tank reactor. Water, the reaction product in the PEM-FC autocatalytically accelerates the reaction rate by enhancing proton transport through the PEM. Established analyses of heat autocatalyticity in a CSTR are modified to present water management autocatalyticity in a stirred tank reactor PEM-FC.
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