Quantification of liquid water accumulation and distribution in a polymer electrolyte fuel cell using neutron imaging

2006 ◽  
Vol 160 (2) ◽  
pp. 1195-1203 ◽  
Author(s):  
A. Turhan ◽  
K. Heller ◽  
J.S. Brenizer ◽  
M.M. Mench
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Liquid Water ◽  
Neutron Imaging ◽  
Polymer Electrolyte Fuel Cell ◽  
Water Accumulation

Effect of Operating Temperature on the Water Removal in a Polymer Electrolyte Fuel Cell

2008 ◽  
Author(s):  
Wanyuan Shi ◽  
Nobuyuki Oshima ◽  
L. Kumar Saha ◽  
Eru Kurihara
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Liquid Water ◽  
Water Saturation ◽  
Operating Temperature ◽  
Gas Diffusion ◽  
Polymer Electrolyte Fuel Cell ◽  
Water Removal ◽  
Operation Temperature ◽  
Increasing Temperature

In order to investigate the effect of operation temperature on the liquid water removal in the polymer electrolyte fuel cell, a one-dimensional steady state mathematical model was developed for the cathode gas diffusion layer (GDL). Numerical results indicate that liquid water saturation significantly increases with increases in the operating temperature of the fuel cell because the capillary pressure in the hydrophobic GDL decreases with increasing temperature. An elevated operating temperature has an undesirable influence on the removal of liquid water inside the GDL. A reported peculiar phenomenon in which the flooding of the fuel cell under a high operating temperature and an over-saturated environment is more serious in a GDL combined with a micro-porous layer (MPL) than in a GDL without an MPL (Lim and Wang, Electrochimica Acta, 49, pp. 4149–4156, 2004) is explained based on the present analysis.

Through-Plane Water Distribution in a Polymer Electrolyte Fuel Cell at Various Operating Temperatures

2010 ◽  
Author(s):  
Yun Wang ◽  
Ken S. Chen
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Water Distribution ◽  
Electrochemical Reaction ◽  
Neutron Imaging ◽  
Polymer Electrolyte Fuel Cell ◽  
Two Phase ◽  
Model Predictions ◽  
Higher Temperature ◽  
Operating Temperatures

A multi-dimensional mathematical model is formulated for simulating the transport and electrochemical reaction phenomena in a polymer electrolyte fuel cell (PEFC). The model describes the two-phase flows, electrochemical reaction kinetics, species transport, and heat transfer, as well as their intrinsic couplings within a PEFC. Two-dimensional model predictions are computed for the two typical operating temperatures at 40 and 80 °C. Computed results reveal that liquid water level may be lower at the higher temperature operation due to water vapor phase diffusion. Detailed water and temperature distributions are displayed to explain the water and heat transport and their interaction. The computed water-content profiles are compared with available experimental data obtained by neutron imaging.

Neutron Imaging of Isothermal Sub-Zero Degree Celsius Cold-Starts of a Polymer Electrolyte Fuel Cell (PEFC)

2019 ◽  
Vol 41 (1) ◽  
pp. 363-370 ◽  
Author(s):  
Pierre Oberholzer ◽  
Pierre Boillat ◽  
Raphael Siegrist ◽  
Raffaella Perego ◽  
Anders Kaestner ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Neutron Imaging ◽  
Polymer Electrolyte Fuel Cell ◽  
Zero Degree ◽  
Cold Starts

scholarly journals High Resolution Neutron Imaging of Water in the Polymer Electrolyte Fuel Cell Membrane

2019 ◽  
Vol 25 (1) ◽  
pp. 505-512 ◽  
Author(s):  
Partha P. Mukherjee ◽  
Rangachary Mukundan ◽  
Jacob S. Spendelow ◽  
John R. Davey ◽  
Rodney Borup ◽  
...  
Keyword(s):  
Fuel Cell ◽  
High Resolution ◽  
Cell Membrane ◽  
Polymer Electrolyte ◽  
Neutron Imaging ◽  
Polymer Electrolyte Fuel Cell
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