scholarly journals Structure of the catalytic sites in Fe/N/C-catalysts for O2-reduction in PEM fuel cells

2012 ◽  
Vol 14 (33) ◽  
pp. 11673 ◽  
Author(s):  
Ulrike I. Kramm ◽  
Juan Herranz ◽  
Nicholas Larouche ◽  
Thomas M. Arruda ◽  
Michel Lefèvre ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Pem Fuel Cells ◽  
O2 Reduction ◽  
Catalytic Sites

A specific demetalation of Fe–N4 catalytic sites in the micropores of NC_Ar + NH3 is at the origin of the initial activity loss of the highly active Fe/N/C catalyst used for the reduction of oxygen in PEM fuel cells

2018 ◽  
Vol 11 (2) ◽  
pp. 365-382 ◽  
Author(s):  
Régis Chenitz ◽  
Ulrike I. Kramm ◽  
Michel Lefèvre ◽  
Vassili Glibin ◽  
Gaixia Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Fuel Cells ◽  
Pem Fuel Cells ◽  
Initial Activity ◽  
Performance Loss ◽  
Highly Active ◽  
Catalytic Sites ◽  
Activity Loss

Micropores are largely responsible for Fe/N/C catalytic activity, but are also intrinsically responsible for the rapid initial performance loss in PEMFC.

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