Electrocatalysis of oxygen reduction reaction on Nafion/platinum/gas diffusion layer electrode for PEM fuel cell

2011 ◽  
Vol 257 (24) ◽  
pp. 10408-10413 ◽  
Author(s):  
Sekineh Chabi ◽  
Mehdi Kheirmand
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Diffusion Layer ◽  
Gas Diffusion Layer ◽  
Pem Fuel Cell ◽  
Gas Diffusion ◽  
Reduction Reaction

Pt Surface Oxides and Oxygen Reduction Reaction Kinetics Under Dynamic PEM Fuel Cell Operation

2021 ◽  
Vol MA2021-02 (36) ◽  
pp. 1018-1018
Author(s):  
Venkata Yarlagadda ◽  
Wenbin Gu ◽  
Srikanth Arisetty ◽  
Anusorn Kongkanand
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Reaction Kinetics ◽  
Oxygen Reduction ◽  
Pem Fuel Cell ◽  
Reduction Reaction ◽  
Surface Oxides ◽  
Fuel Cell Operation

Lattice Boltzmann Modeling of Water Cumulation at the Gas Channel-Gas Diffusion Layer Interface in PEM Fuel Cells

2014 ◽  
Author(s):  
Dario Maggiolo ◽  
Andrea Marion ◽  
Massimo Guarnieri
Keyword(s):  
Fuel Cell ◽  
Diffusion Layer ◽  
Lattice Boltzmann ◽  
Gas Diffusion Layer ◽  
Pem Fuel Cell ◽  
Pem Fuel Cells ◽  
Gas Diffusion ◽  
Vapor Condensation ◽  
Relative Height ◽  
Gas Channel

Several experiments have proved that water in liquid phase can be present at the anode of a PEM fuel cell due to vapor condensation resulting in mass transport losses. Nevertheless, it is not yet well understood where exactly water tends to cumulate and how the design of the gas channel (GC) and gas diffusion layer (GDL) could be improved to limit water cumulation. In the present work a three-dimensional lattice Boltzmann based model is implemented in order to simulate the water cumulation at the GC-GDL interface at the anode of a PEM fuel cell. The numerical model incorporates the H2-H2O mixture equation of state and spontaneously simulates phase separation phenomena. Different simulations are carried out varying pressure gradient, pore size and relative height of the GDL. Results reveal that, once saturation conditions are reached, water tends to cumulate in two main regions: the upper and side walls of the GC and the GC-GDL interface, resulting in a limitation of the reactant diffusion from the GC to the GDL. Interestingly, the cumulation of liquid water at the interface is found to diminish as the relative height of the GDL increases.

scholarly journals Nanostructured Pt-alloy electrocatalysts for PEM fuel cell oxygen reduction reaction

2010 ◽  
Vol 39 (6) ◽  
pp. 2184 ◽  
Author(s):  
Yonghong Bing ◽  
Hansan Liu ◽  
Lei Zhang ◽  
Dave Ghosh ◽  
Jiujun Zhang
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Pem Fuel Cell ◽  
Reduction Reaction ◽  
Pt Alloy ◽  
Nanostructured Pt
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