scholarly journals Numerical Investigation on the Impact of Membrane Thickness on Transport Phenomena in PEM Fuel Cells

2020 ◽  
pp. 4138-4147
Author(s):  
Shian Li ◽  
Keyword(s):  
Fuel Cells ◽  
Numerical Investigation ◽  
Transport Phenomena ◽  
Pem Fuel Cells ◽  
Membrane Thickness ◽  
The Impact

Numerical investigation of the effect of different layers configurations on the performance of radial PEM fuel cells

2019 ◽  
Vol 143 ◽  
pp. 1877-1889 ◽  
Author(s):  
Ali Solati ◽  
Behzad Nasiri ◽  
Akbar Mohammadi-Ahmar ◽  
Kamyar Mohammadi ◽  
Amir Hossein Safari
Keyword(s):  
Fuel Cells ◽  
Numerical Investigation ◽  
Pem Fuel Cells

Numerical investigation of the performance of symmetric flow distributors as flow channels for PEM fuel cells

2012 ◽  
Vol 37 (1) ◽  
pp. 436-448 ◽  
Author(s):  
Bladimir Ramos-Alvarado ◽  
Abel Hernandez-Guerrero ◽  
Daniel Juarez-Robles ◽  
Peiwen Li
Keyword(s):  
Fuel Cells ◽  
Numerical Investigation ◽  
Pem Fuel Cells ◽  
Symmetric Flow ◽  
Flow Channels

Analysis of Multiphase Transport Phenomena in PEMFCS by Incorporating Microscopic Model for Catalyst Layer Structures

2011 ◽  
Author(s):  
Munir Khan ◽  
Yexiang Xiao ◽  
Bengt Sunde´n ◽  
Jinliang Yuan
Keyword(s):  
Fuel Cells ◽  
Hydrogen Oxidation ◽  
Polymer Electrolyte Membrane ◽  
Transport Phenomena ◽  
Knudsen Diffusion ◽  
Catalyst Layer ◽  
Pem Fuel Cells ◽  
Microscopic Model ◽  
Cathode Side ◽  
Platinum Particles

The catalyst layer (CL) in polymer electrolyte membrane (PEM) fuel cells is one of the key components regulating the overall performance of the cell. In PEM fuel cells, there are two CLs having identical composition for hydrogen oxidation (HO) and oxygen reduction (OR) reactions. There are four phases inside the CL, namely: carbon, Pt particles, ionomer and voids. In this work, a micro-model of the cathode CL has been developed mathematically using finite volume (FV) technique to investigate the transport phenomena of reactants and product species, ions and electrons by incorporating the above stated phases at the cathode side only, due to the fact that the OR reactions are the rate limiting as compared to HO reaction. The 3D CL has been reconstructed based on a regularly distributed sphere’s method with dimensions 4.1 × 4.1 × 4.1 μm3. Platinum particles combined with carbon spheres (C/Pt) are regularly placed in the domain, an ionomer layer of a given thickness is extruded from the sphere surfaces. The C/Pt, ionomer and void distribution, as well as the triple phase boundary (TPB) are analysed and discussed. A microscopic model has been developed for water generation and species transport via Knudsen diffusion through the voids and the proton transport in the ionomer has been included here to aim for the rigorousness of the work. In addition, the electrochemical reactions have been simulated on the surface of Pt particles fulfilling the TBP conditions.

Transport Phenomena in Elevated Temperature PEM Fuel Cells

2007 ◽  
Vol 154 (1) ◽  
pp. B106 ◽  
Author(s):  
Puneet K. Sinha ◽  
Chao-Yang Wang ◽  
Uwe Beuscher
Keyword(s):  
Fuel Cells ◽  
Elevated Temperature ◽  
Transport Phenomena ◽  
Pem Fuel Cells
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