A unit fuel cell with straight gas channels operating in low voltage conditions is considered. Anode electrochemical losses are neglected and a particular, simple form for mass transport limitations to the cathode oxygen reduction electrochemistry is taken and validated with experimental results. With experimentally fitted parameters, it is found that the mass transport limitations dominate the behaviour of the local current density at low voltages. Combined with a simple channel model for oxygen flux, this leads to a description of local current densities independent of cell voltage, assuming only that it is low. The work is motivated by Polymer Electrolyte Membrane fuel cells but the ideas are general enough to be applied to other fuel cell types.
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ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology
May 23–25, 2005
Ypsilanti, Michigan, USA
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-3764-5
PROCEEDINGS PAPER
Universal Mass-Transport Limited Fuel Cell Current Curves
Brian Wetton,
Brian Wetton
University of British Columbia, Vancouver, BC, Canada
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Gwang-Soo Kim,
Gwang-Soo Kim
Ballard Power Systems, Burnaby, BC, Canada
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Keith Promislow,
Keith Promislow
Michigan State University, East Lansing, MI
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Jean St-Pierre,
Jean St-Pierre
Ballard Power Systems, Burnaby, BC, Canada
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John Stockie
John Stockie
Simon Fraser University, Burnaby, BC, Canada
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Brian Wetton
University of British Columbia, Vancouver, BC, Canada
Gwang-Soo Kim
Ballard Power Systems, Burnaby, BC, Canada
Keith Promislow
Michigan State University, East Lansing, MI
Jean St-Pierre
Ballard Power Systems, Burnaby, BC, Canada
John Stockie
Simon Fraser University, Burnaby, BC, Canada
Paper No:
FUELCELL2005-74093, pp. 123-128; 6 pages
Published Online:
October 13, 2008
Citation
Wetton, B, Kim, G, Promislow, K, St-Pierre, J, & Stockie, J. "Universal Mass-Transport Limited Fuel Cell Current Curves." Proceedings of the ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology. 3rd International Conference on Fuel Cell Science, Engineering and Technology. Ypsilanti, Michigan, USA. May 23–25, 2005. pp. 123-128. ASME. https://doi.org/10.1115/FUELCELL2005-74093
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