Record number :
1668854
Title of article :
Tantalum nitride coated AISI 316L as bipolar plate for polymer electrolyte membrane fuel cell
Author/Authors :
Choe، نويسنده , , Changhee and Choi، نويسنده , , Hyoseok and Hong، نويسنده , , Wonhyuk and Lee، نويسنده , , Jung-Joong، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Pages :
7
From page :
405
To page :
411
Abstract :
Tantalum nitride (TaN) thin films are deposited on AISI 316L stainless steel by inductively coupled, plasma-assisted, reactive magnetron sputtering at various N2 flow rates. TaN film behavior is investigated in simulated polymer electrolyte membrane fuel cell (PEMFC) conditions by using electrochemical measurement techniques for application as bipolar plates. The results of a potentio-dynamic polarization test under PEMFC cathodic and anodic conditions indicate that the corrosion current density of the TaNx films is of the order of 10−7 A cm−2 (at 0.6 V) and 10−8 A cm−2 (at −0.1 V), respectively; these results are considerably better than the individual results for metallic Ta films and AISI 316L stainless steel. The TaNx films exhibit superior stability in a potentio-static polarization test performed under PEMFC cathodic and anodic conditions. The interfacial contact resistance of the films is measured in the range of 50–150 N cm−2, and the lowest value is 11 mΩ cm2 at a compaction pressure of 150 N cm−2.
Keywords :
Tantalum nitride (TaN) , Polymer electrolyte membrane fuel cell (PEMFC) , Interfacial contact resistance (ICR) , Corrosion , Bipolar plate
Journal title :
International Journal of Hydrogen Energy
Journal title :
International Journal of Hydrogen Energy
Serial Year :
2012
Link To Document :
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