A Statistical Mechanical Model of Proton and Water Transport in a Proton Exchange Membrane

2000 ◽  
Vol 147 (2) ◽  
pp. 617 ◽  
Author(s):  
Stephen J. Paddison ◽  
Reginald Paul ◽  
Thomas A. Zawodzinski
Keyword(s):  
Water Transport ◽  
Mechanical Model ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Statistical Mechanical Model ◽  
Statistical Mechanical ◽  
Exchange Membrane

Thermal Effect on Water Transport in Proton Exchange Membrane Fuel Cell

Fuel Cells ◽  
2011 ◽  
Vol 12 (2) ◽  
pp. 212-224 ◽  
Author(s):  
A. Thomas ◽  
G. Maranzana ◽  
S. Didierjean ◽  
J. Dillet ◽  
O. Lottin
Keyword(s):  
Fuel Cell ◽  
Thermal Effect ◽  
Water Transport ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Exchange Membrane

Water Transport through Proton Exchange Membranes

2006 ◽  
Vol 15-17 ◽  
pp. 310-314
Author(s):  
Tatiana Romero-Castañon ◽  
W. Mérida
Keyword(s):  
Mass Spectrometry ◽  
Water Transport ◽  
Room Temperature ◽  
Proton Exchange Membrane ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Back Diffusion ◽  
Detection Rates ◽  
Catalyst Layers ◽  
Exchange Membrane

The presence of water within the polymeric ionic conductor and catalyst layers is indispensable for proton exchange membrane fuel cell (PEMFC) operation. The water transport within the membrane is always a balance between at least two competing mechanisms (water back-diffusion from the cathode to the anode, and electro-osmotic drag from the anode to the cathode). We present an experimental technique for the analysis of water transport within and through the membrane. Mass spectrometry was used to investigate diffusion and electro-osmotic drag in real time (detection rates < 100 ms). We present data on the net water transport resulting from the analysis at room temperature in Nafion115.

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