Nitrogen Doped Graphene as Catalyst Support for Sulfur Tolerance in Polymer Electrolyte Membrane Fuel Cells

Graphene ◽  
2014 ◽  
Vol 2 (2) ◽  
pp. 134-138 ◽  
Author(s):  
Prithi Jayaraj ◽  
R. Imran Jafri ◽  
N. Rajalakshmi ◽  
K. S. Dhathathreyan
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Catalyst Support ◽  
Sulfur Tolerance ◽  
Nitrogen Doped ◽  
Electrolyte Membrane ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

scholarly journals CO Tolerance and Stability of Graphene and N-Doped Graphene Supported Pt Anode Electrocatalysts for Polymer Electrolyte Membrane Fuel Cells

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 597
Author(s):  
Martin González-Hernández ◽  
Ermete Antolini ◽  
Joelma Perez
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Graphene Nanosheets ◽  
Polymer Electrolyte Membrane ◽  
Co Adsorption ◽  
Active Surface Area ◽  
Pristine Graphene ◽  
Electrolyte Membrane ◽  
Co Tolerance ◽  
Doped Graphene

Pt electrocatalysts supported on pristine graphene nanosheets (GNS) and nitrogen-doped graphene nanoplatelets (N-GNP) were prepared through the ethylene glycol process, and a comparison of their CO tolerance and stability as anode materials in polymer electrolyte membrane fuel cells (PEMFCs) with those of the conventional carbon (C)-supported Pt was made. Repetitive potential cycling in a half cell showed that Pt/GNS catalysts have the highest stability, in terms of the highest sintering resistance (lowest particle growth) and the lowest electrochemically active surface area loss. By tests in PEMFCs, the Pt/N-GNP catalyst showed the highest CO tolerance, while the poisoning resistance of Pt/GNS was lower than that of Pt/C. The higher CO tolerance of Pt/N-GNP than that of Pt/GNS was ascribed to the presence of a defect in graphene, generated by N-doping, decreasing CO adsorption energy.

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