Molecular-Level Modeling of the Structure and Proton Transport within the Membrane Electrode Assembly of Hydrogen Proton Exchange Membrane Fuel Cells

2010 ◽  
pp. 133-202
Author(s):  
Myvizhi Esai Selvan ◽  
David J. Keffer
Keyword(s):  
Fuel Cells ◽  
Proton Transport ◽  
Proton Exchange Membrane ◽  
Molecular Level ◽  
Membrane Electrode Assembly ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Exchange Membrane

Highly stable nanostructured membrane electrode assembly based on Pt/Nb2O5nanobelts with reduced platinum loading for proton exchange membrane fuel cells

Nanoscale ◽  
2017 ◽  
Vol 9 (20) ◽  
pp. 6910-6919 ◽  
Author(s):  
Yachao Zeng ◽  
Xiaoqian Guo ◽  
Zhiqiang Wang ◽  
Jiangtao Geng ◽  
Hongjie Zhang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Membrane Electrode Assembly ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Exchange Membrane ◽  
Platinum Loading

A review on water balance in the membrane electrode assembly of proton exchange membrane fuel cells

2009 ◽  
Vol 34 (23) ◽  
pp. 9461-9478 ◽  
Author(s):  
Wei Dai ◽  
Haijiang Wang ◽  
Xiao-Zi Yuan ◽  
Jonathan J. Martin ◽  
Daijun Yang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Water Balance ◽  
Proton Exchange Membrane ◽  
Membrane Electrode Assembly ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Exchange Membrane

scholarly journals Structures of Membrane Electrode Assembly Catalyst Layers for Proton Exchange Membrane Fuel Cells

2012 ◽  
Vol 5 (1) ◽  
pp. 28-38 ◽  
Author(s):  
Tzyy-Lung Leon Yu ◽  
Hsiu-Li Lin ◽  
Po-Hao Su ◽  
Guan-Wen Wang
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Membrane Electrode Assembly ◽  
Gas Diffusion ◽  
Proton Exchange ◽  
Membrane Electrode ◽  
Catalyst Layers ◽  
Black Layer ◽  
Exchange Membrane ◽  
Pt Black

In this paper, we modify the conventional 5-layer membrane electrode assembly (MEA, in which a proton exchange membrane (PEM) is located at its center, two Pt-C-40 (Pt on carbon powder support, Pt content 40 wt.%) catalyst layers (CLs) are located on the surfaces of the both sides of the PEM and two gas diffusion layers (GDLs) are attached next on the outer surfaces of two Pt-C-40 layers) and propose 7-layer and 9-layer MEAs by coating thin Pt-black CLs at the interfaces between the Pt-C-40 layer and the GDL and between the PEM and the Pt-C-40 layer and reducing the Pt-C-40 loading. The reduced Pt loading quantity of the Pt-C-40 layer is equal to the increased Pt loading quantity of the Pt-black layer, thus the total amount of Pt loadings in the unmodified conventional MEA and the modified MEAs are at a fixed Pt loading quantity. These modified MEAs may complicate the manufacture process. The main advantage of these 7- and 9-layer MEAs is the thinner CL thickness and thus lower CL proton transport resistance. Because of the thin Pt-black layer thickness in MEA, we avoid agglomeration of the Pt-black particles and maintain high Pt catalytic activity. We show these new CL structure MEAs have better fuel cells performance than the conventional 5-layer MEA.

Sign in / Sign up

Export Citation Format

Share Document