Micro-Computed Tomography-Based Profilometry for Characterizing the Surface Roughness of Microporous Layer-Coated Polymer Electrolyte Membrane Fuel Cell Gas Diffusion Layers

2016 ◽  
Vol 163 (8) ◽  
pp. F832-F841 ◽  
Author(s):  
Michael George ◽  
Zachary Fishman ◽  
Steven Botelho ◽  
Aimy Bazylak
Keyword(s):  
Computed Tomography ◽  
Surface Roughness ◽  
Fuel Cell ◽  
Polymer Electrolyte Membrane ◽  
Gas Diffusion ◽  
Micro Computed Tomography ◽  
Microporous Layer ◽  
Gas Diffusion Layers ◽  
Electrolyte Membrane ◽  
Diffusion Layers

Accelerated Degradation of Polymer Electrolyte Membrane Fuel Cell Gas Diffusion Layers

2017 ◽  
Vol 164 (7) ◽  
pp. F704-F713 ◽  
Author(s):  
Hang Liu ◽  
Michael G. George ◽  
Rupak Banerjee ◽  
Nan Ge ◽  
Jongmin Lee ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Gas Diffusion ◽  
Gas Diffusion Layers ◽  
Electrolyte Membrane ◽  
Accelerated Degradation ◽  
Diffusion Layers

Pore Space Characterization of Compressed PEMFC GDLs Using 3D Micro-Computed Tomography

2012 ◽  
Author(s):  
Pradyumna R. Challa ◽  
A. Bazylak
Keyword(s):  
Computed Tomography ◽  
Pore Space ◽  
Polymer Electrolyte Membrane ◽  
Gas Diffusion ◽  
Ex Situ ◽  
Micro Computed Tomography ◽  
Porous Layers ◽  
Electrolyte Membrane ◽  
Diffusion Layers

In this work, micro-computed tomography was employed to characterize the effect of rib and channel compression on the through-plane porosity distributions of polymer electrolyte membrane fuel cell (PEMFC) gas diffusion layers (GDLs). Two GDLs with micro-porous layers (MPLs): a paper based GDL (GDL A), and a felt GDL (GDL B) were compressed at 1.2 MPa in an ex situ flow field apparatus with 1mm × 1mm channels. Porosity distributions of compressed GDLs were compared with those of uncompressed GDLs, and the microstructural differences caused during the manufacturing of paper, felt, and cloth GDLs are discussed. The results of this study will aid modellers in generating realistic stochastic GDL pore structures for multiphase flow simulations.

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