Impact of Film Thickness on Defects and the Graphitization of Nanothin Carbon Coatings Used for Metallic Bipolar Plates in Proton Exchange Membrane Fuel Cells

2018 ◽  
Vol 10 (40) ◽  
pp. 34561-34572 ◽  
Author(s):  
Peiyun Yi ◽  
Di Zhang ◽  
Linfa Peng ◽  
Xinmin Lai
Keyword(s):  
Fuel Cells ◽  
Film Thickness ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Bipolar Plates ◽  
Carbon Coatings ◽  
Metallic Bipolar Plates ◽  
Exchange Membrane

Nitride Metallic Bipolar Plates for Proton Exchange Membrane Fuel Cells

2004 ◽  
Author(s):  
Michael P. Brady ◽  
Heli Wang ◽  
Irene Paulauskas ◽  
Bing Yang ◽  
Pavlo Sachenko ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Bipolar Plates ◽  
Electrically Conductive ◽  
Metallic Bipolar Plates ◽  
Cell Test ◽  
Protection Of The Metal ◽  
Thermal Nitridation ◽  
Exchange Membrane

Thermal nitridation of Ni- and Fe-base Cr-bearing alloys is under investigation as a means to enable use of metallic bipolar plates in proton exchange membrane fuel cells. Proof of principle for this approach was recently established by a successful single-cell fuel cell test using 50 cm2 active area anode and cathode plates made from a model nitrided Ni-50Cr alloy. Protection of the metal was accomplished by the formation of an electrically-conductive and corrosion-resistant CrN/Cr2N surface layer. This paper presents an overview of efforts to form similar Cr-nitride surfaces on Ni-Cr and Fe-Cr base alloys in commercially available composition ranges.

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