Prediction of methanol and water fluxes through a direct methanol fuel cell polymer electrolyte membrane

Development of a direct methanol fuel cell (DMFC) mass flux model, using conventional transport theory, is presented and used to predict the fluid phase superficial velocity, methanol and water molar fluxes, and the chemical species (methanol and water) dimensionless concentration profiles in the po...

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Bibliographic Details
Published in:Electrochimica acta 2005-06, Vol.50 (19), p.3985-3991
Main Authors: Sandhu, S.S., Crowther, R.O., Fellner, J.P.
Format: Article
Language:English
Subjects:
Applied sciences
Direct methanol fuel cell
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cell
Fuel cells
Mathematical model
Methanol crossover
Nafion
Proton exchange membrane
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Summary:Development of a direct methanol fuel cell (DMFC) mass flux model, using conventional transport theory, is presented and used to predict the fluid phase superficial velocity, methanol and water molar fluxes, and the chemical species (methanol and water) dimensionless concentration profiles in the polymer electrolyte membrane, Nafion ® 117, of a DMFC. Implementation of these equations is illustrated to generate the numerical data as functions of the variables such as the pressure difference across the membrane, methanol concentration at the cell anode, temperature, and position in the membrane.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2005.02.048