Corrosion resistance and interfacial contact resistance of TiN coated 316L bipolar plates for proton exchange membrane fuel cell

Abstract TiN coating is successfully deposited on 316L by multi-arc ion plating. Corrosion behavior of TiN coated 316L is studied in 0.05 M H 2 SO 4  + 2 ppm F − simulating proton exchange membrane fuel cell (PEMFC) environments using electrochemical method, and interfacial contact resistance (ICR) is measured before and after potentiostatic polarization at operation potential for PEMFC. The TiN coated 316L exhibits promising ICR and improved corrosion resistance in simulated aggressive PEMFC environments. Only general overall corrosion is observed after potentiostatic polarization. Stable passive film has formed on the surface of the TiN coated 316L after potentiostatic polarization at the operation potential and results in a slight increase in the ICR. These results indicate that the TiN coated 316L is a candidate bipolar plate material for PEMFC stacks.

[1]  John A. Turner,et al.  Thermally nitrided stainless steels for polymer electrolyte membrane fuel cell bipolar plates: Part 1: Model Ni–50Cr and austenitic 349™ alloys , 2004 .

[2]  C. Zawodzinski,et al.  Assessment of thermal nitridation to protect metal bipolar plates in polymer electrolyte membrane fuel cells , 2002 .

[3]  Paul Leonard Adcock,et al.  New materials for polymer electrolyte membrane fuel cell current collectors , 1999 .

[4]  Z. Cai,et al.  Microstructure, Hardness and Oxidation Resistance of CrN and CrAlN Coatings Synthesized by Multi-Arc Ion Plating Technology , 2010 .

[5]  C. Zeng,et al.  Electrochemical corrosion behaviour of type 316 stainless steel in acid media containing fluoride ions , 2001 .

[6]  John A. Turner,et al.  Ferritic stainless steels as bipolar plate material for polymer electrolyte membrane fuel cells , 2004 .

[7]  EunAe Cho,et al.  Performance of a 1 kW-class PEMFC stack using TiN-coated 316 stainless steel bipolar plates , 2005 .

[8]  Yun‐Jae Kim,et al.  Electrochemical properties of TiN coatings on 316L stainless steel separator for polymer electrolyte membrane fuel cell , 2008 .

[9]  Paul Leonard Adcock,et al.  Bipolar plate materials for solid polymer fuel cells , 2000 .

[10]  Life-Limiting Aspects of the Corrosion of Metallic Bipolar Plates for PEM Fuel Cells , 2008 .

[11]  Chuang Wang,et al.  Mechanical properties and phase structure of (TiAlZr)N films deposited by multi arc ion plating , 2009 .

[12]  L. Wang,et al.  Corrosion properties and contact resistance of TiN, TiAlN and CrN coatings in simulated proton exchange membrane fuel cell environments , 2010 .

[13]  Shuo-Jen Lee,et al.  PVD Coated Bipolar Plates for PEM Fuel Cells , 2005 .

[14]  Suzhen Luo,et al.  Corrosion behavior of TiN coated type 316 stainless steel in simulated PEMFC environments , 2004 .

[15]  Félix Barreras,et al.  Cr and Zr/Cr nitride CAE-PVD coated aluminum bipolar plates for polymer electrolyte membrane fuel cells , 2010 .

[16]  P. Chu,et al.  Conductive amorphous carbon-coated 316L stainless steel as bipolar plates in polymer electrolyte membrane fuel cells , 2009 .

[17]  Wang Xiaohui,et al.  Structure and wear resistance of TiN and TiAlN coatings on AZ91 alloy deposited by multi-arc ion plating , 2010 .

[18]  A. Pozio,et al.  Surface conductivity and stability of metallic bipolar plate materials for polymer electrolyte fuel cells , 2006 .

[19]  H. Ichimura,et al.  Comparison of surface oxidation of titanium nitride and chromium nitride films studied by x-ray absorption and photoelectron spectroscopy , 1997 .

[20]  Heli Wang,et al.  Investigation of a Duplex Stainless Steel as Polymer Electrolyte Membrane Fuel Cell Bipolar Plate Material , 2005 .

[21]  B. Elsener,et al.  Impedance Study on the Corrosion of PVD and CVD Titanium Nitride Coatings , 1991 .

[22]  A. Iversen.  Stainless steels in bipolar plates—Surface resistive properties of corrosion resistant steel grades during current loads , 2006 .

[23]  Ching-Han Huang,et al.  Investigation of PVD coating on corrosion resistance of metallic bipolar plates in PEM fuel cell , 2003 .

[24]  A. Jones,et al.  X-ray diffraction studies of physically vapour-deposited coatings , 1989 .

[25]  Heli Wang,et al.  Stainless steel as bipolar plate material for polymer electrolyte membrane fuel cells , 2003 .

[26]  Chemical Treatment Method for the Aluminum Bipolar Plates of PEM Fuel Cells , 2005 .

[27]  R. A. Buchanan,et al.  Fundamentals of Electrochemical Corrosion , 2000 .

[28]  Karren L. More,et al.  Preferential thermal nitridation to form pin-hole free Cr-nitrides to protect proton exchange membrane fuel cell metallic bipolar plates , 2004 .

[29]  B. E. Wilde,et al.  The corrosion and passivation of iron in the presence of halide ions in aqueous solution , 1980 .