Computational model of a PEM fuel cell with serpentine gas flow channels

A three-dimensional computational fluid dynamics model of a PEM fuel cell with serpentine flow field channels is presented in this paper. This comprehensive model accounts for the major transport phenomena in a PEM fuel cell: convective and diffusive heat and mass transfer, electrode kinetics, and potential fields. A unique feature of the model is the implementation of a voltage-to-current (VTC) algorithm that solves for the potential fields and allows for the computation of the local activation overpotential. The coupling of the local activation overpotential distribution and reactant concentration makes it possible to predict the local current density distribution more accurately. The simulation results reveal current distribution patterns that are significantly different from those obtained in studies assuming constant surface overpotential. Whereas the predicted distributions at high load show current density maxima under the gas channel area, low load simulations exhibit local current maxima under the collector plate land areas.

[1]  T. Fuller,et al.  Water and Thermal Management in Solid‐Polymer‐Electrolyte Fuel Cells , 1993 .

[2]  Ned Djilali,et al.  THREE-DIMENSIONAL COMPUTATIONAL ANALYSIS OF TRANSPORT PHENOMENA IN A PEM FUEL CELL , 2002 .

[3]  Z. H. Wang,et al.  Two-phase flow and transport in the air cathode of proton exchange membrane fuel cells , 2000 .

[4]  Markku J. Lampinen,et al.  Analysis of Free Energy and Entropy Changes for Half‐Cell Reactions , 1993 .

[5]  Ned Djilali,et al.  A 3D, Multiphase, Multicomponent Model of the Cathode and Anode of a PEM Fuel Cell , 2003 .

[6]  Ralph E. White,et al.  A water and heat management model for proton-exchange-membrane fuel cells , 1993 .

[7]  A. Parthasarathy,et al.  Temperature Dependence of the Electrode Kinetics of Oxygen Reduction at the Platinum/Nafion® Interface—A Microelectrode Investigation , 1992 .

[8]  T. Springer,et al.  Polymer Electrolyte Fuel Cell Model , 1991 .

[9]  Sadik Kakac,et al.  Two‐dimensional model for proton exchange membrane fuel cells , 1998 .

[10]  Mark W. Verbrugge,et al.  A Mathematical Model of the Solid‐Polymer‐Electrolyte Fuel Cell , 1992 .

[11]  Ross Taylor,et al.  Multicomponent mass transfer , 1993 .

[12]  Lin Wang,et al.  A parametric study of PEM fuel cell performances , 2003 .

[13]  M. Verbrugge,et al.  Mathematical model of a gas diffusion electrode bonded to a polymer electrolyte , 1991 .

[14]  Trung Van Nguyen,et al.  A Two-Dimensional, Two-Phase, Multicomponent, Transient Model for the Cathode of a Proton Exchange Membrane Fuel Cell Using Conventional Gas Distributors , 2001 .

[15]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.