catalyst layers
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Author(s):  
Jingtian Wu ◽  
Huiyuan Liu ◽  
Yujiang Song ◽  
Yun Wang

Cost is a major barrier to commercialization of polymer electrolyte membrane (PEM) fuel cells. Catalyst layers (CLs) contribute to a major portion of PEM fuel cell cost due to the...


2022 ◽  
Vol 334 ◽  
pp. 04019
Author(s):  
Karrar Alofari ◽  
Ezequiel Me´dici ◽  
Kazuya Tajiri ◽  
Jeffrey Allen

Percolation testing and contact angle measurements have been used to investigate the role of relative humidity on structure, mass transport, and wettability of a PEM fuel cell catalyst layer and membrane. Four samples were tested, two catalyst layers and two membranes. Structure and mass transport changes in the catalyst layers resulting from RH changes were studied in terms of percolation pressure. A clear change in the structure between low and high RH conditioning was observed. Relative humidity (RH) cycling also impacted percolation pressures with an indication of catalyst layer cracking. In addition, RH effect on wettability of both catalyst layers and membranes was studied by measuring contact angles of sessile drops.


2021 ◽  
Vol 514 ◽  
pp. 230574
Author(s):  
Yannick Garsany ◽  
Robert W. Atkinson ◽  
Benjamin D. Gould ◽  
Rachel Martin ◽  
Laetitia Dubau ◽  
...  

2021 ◽  
pp. 139479
Author(s):  
Emmanuel Balogun ◽  
Peter Mardle ◽  
Hien Nguyen ◽  
Matthias Breitwieser ◽  
Steven Holdcroft
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