Effect of surface treatment on the interfacial contact resistance and corrosion resistance of Fe–Ni–Cr alloy as a bipolar plate for polymer electrolyte membrane fuel cells

Energy ◽  
2014 ◽  
Vol 64 ◽  
pp. 242-247 ◽  
Author(s):  
Meijun Yang ◽  
Dongming Zhang
Keyword(s):  
Corrosion Resistance ◽  
Contact Resistance ◽  
Surface Treatment ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Bipolar Plate ◽  
Electrolyte Membrane ◽  
Interfacial Contact ◽  
Interfacial Contact Resistance ◽  
Effect Of Surface

Preparation and Characterization of TiN-SBR Coating on Metallic Bipolar Plates for Polymer Electrolyte Membrane Fuel Cell

2017 ◽  
Vol 20 (4) ◽  
pp. 169-173
Author(s):  
Huihui Zhang ◽  
Juntao Yuan ◽  
Ming Zhu
Keyword(s):  
Corrosion Resistance ◽  
Fuel Cell ◽  
Contact Resistance ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Styrene Butadiene Rubber ◽  
Bipolar Plates ◽  
Electrolyte Membrane ◽  
Interfacial Contact ◽  
Interfacial Contact Resistance

In order to reduce interfacial contact resistance (ICR) and enhance corrosion resistance of 310 stainless steel (310 SS) for bipolar plates (BPs) of polymer electrolyte membrane fuel cell (PEMFC), TiN with styrene-butadiene rubber (SBR) coating was prepared by using electrophoretic deposition. Microstructure of TiN-SBR coated 310 SS prepared under different conditions was characterized by scanning electron microscopy (SEM), and a uniform, dense and well-bonded TiN-SBR coating was prepared at 30 V for 10 s in the suspension liquid containing 6.0 g/L SBR. Polarization behavior in the simulated service environment of PEMFC (1 M H2SO4 at 298 K) and ICR of the TiN-SBR coating deposited under the optimized conditions were investigated. The results showed that the TiN-SBR coating successfully decreased the anodic polarization current and ICR, indicating excellent interfacial contact resistance and corrosion resistance.

scholarly journals Effect of N+ Implantation on Surface Characteristics of 316L Stainless Steels for Bipolar Plate in PEMFC

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 604
Author(s):  
Yu-Sung Kim ◽  
Dae-Wook Kim ◽  
In-Sik Lee ◽  
Sungook Yoon ◽  
Daeil Kim ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Contact Resistance ◽  
316L Stainless Steel ◽  
Polymer Electrolyte Membrane ◽  
Surface Characteristics ◽  
Bipolar Plate ◽  
Applied Bias ◽  
Electrolyte Membrane ◽  
Interfacial Contact Resistance

Nitrogen was implanted into 316L stainless steel by plasma immersion ion implantation (PIII) for surface modification. Due to nitrogen implantation, the corrosion resistance and interfacial contact resistance (ICR) were improved compared to the bare 316L stainless steel. The improved corrosion resistance was attributed to the formation of the expanded austenite phase (γN). The phase formation was found to be closely related to the evolution of the (111) plane texture. The formation of γN is strongly related to applied bias voltages. When bias voltages were increased to 15 kV, the γN phase was partially decomposed due to the formation of excessive nitride, including the CrN phase. For the ICR, increased crystallite size is effective in reducing contact resistance, which might arise from a reduced number of the grain boundary with electron scattering. In particular, the applied bias voltage of 10 kV was the most effective to both corrosion resistance and ICR, and its performance satisfies the demand for a bipolar plate in the Polymer Electrolyte Membrane Fuel Cells (PEMFC).

Preparation of Multi-Layer Film on Stainless Steel as Bipolar Plate for Polymer Electrolyte Membrane Fuel Cell

2010 ◽  
Vol 113-116 ◽  
pp. 2255-2261
Author(s):  
Dong Ming Zhang ◽  
Lu Guo ◽  
Liang Tao Duan ◽  
Zai Yi Wang
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Electrical Conductance ◽  
Bipolar Plate ◽  
Contact Angles ◽  
Water Contact ◽  
Electrolyte Membrane

In the present study, we try to prepare hydrophobic film coated on stainless steel as the bipolar plate for polymer electrolyte membrane fuel cell (PEMFC). Magnetron sputtering (MS) was adoped to prepare the Cr3Ni2/Cr2N multi-layer coated on stainless steel. The corrosion resistance and electrical conductance of the coated substrate were tested. The water contact angles were measured. The film exhibits improved corrosion resistance and electrical conductance. The corrosion current is 0.58µA.cm-2 and the contact resistance at 240N.cm-2 is 8.5mΩ.cm2. Meanwhile, it is a kind of hydrophobic film with water contact angle of 107o. The performance shows strong dependance on microstructural characteristics. The nano-protrudes on the SS304/Cr3Ni2/Cr2N surface result in the film with hydrophobic property, just like the effect of lotus surface.

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