Effect of conducting composite polypyrrole/polyaniline coatings on the corrosion resistance of type 304 stainless steel for bipolar plates of proton-exchange membrane fuel cells

2008 ◽  
Vol 182 (2) ◽  
pp. 524-530 ◽  
Author(s):  
Y.J. Ren ◽  
C.L. Zeng
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
304 Stainless Steel ◽  
Bipolar Plates ◽  
Conducting Composite ◽  
Exchange Membrane ◽  
Type 304 ◽  
Type 304 Stainless Steel

Corrosion Performance of Polypyrrole Coated Type 304 Stainless Steel for Bipolar Plates of Proton Exchange Membrane Fuel Cell

2013 ◽  
Vol 573 ◽  
pp. 87-93 ◽  
Author(s):  
Yan Jie Ren ◽  
Jian Chen ◽  
Jian Jun He ◽  
Chao Liu Zeng
Keyword(s):  
Stainless Steel ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
304 Stainless Steel ◽  
Constant Current ◽  
Bipolar Plates ◽  
Current Technique ◽  
Exchange Membrane ◽  
Type 304 ◽  
Type 304 Stainless Steel

Polypyrrole coating doped with dodecylsulfate anions was electrodeposited by cyclic voltammetry and constant current technique on type 304 stainless steel used for bipolar plates of a proton-exchange membrane fuel cell from a basic solution of 0.2M pyrrole monomer solution containing dodecylsulfate sodium as supporting electrolyte. The morphology and corrosion performance of Ppy coated samples were investigated. Microscopic observations showed that the polypyrrole synthesized by constant current technique present a more dense constitution. Electrochemical measurements in 0.1M HCl solution showed that the polypyrrole synthesized by constant current technique provided better protection for the stainless steel.

Formation of a protective nitride layer by electrochemical nitridation on 316L SS bipolar plates for a proton exchange membrane fuel cell (PEMFC)

RSC Advances ◽  
2015 ◽  
Vol 5 (79) ◽  
pp. 64466-64470 ◽  
Author(s):  
S. Pugal Mani ◽  
C. Anandan ◽  
N. Rajendran
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Fuel Cell ◽  
Electrolyte Solution ◽  
Proton Exchange Membrane ◽  
316L Stainless Steel ◽  
Nitride Layer ◽  
Proton Exchange ◽  
Bipolar Plates ◽  
Exchange Membrane

In the present study, an attempt has been made to increase the corrosion resistance of 316L stainless steel (SS) bipolar plates (Bp) through electrochemical nitridation using a nitrate bearing electrolyte solution of 0.1 M HNO3 and 0.5 M KNO3.

Electro and Surface Properties of Graphene-Modified Stainless Steel for PEMFC Bipolar Plates

2014 ◽  
Vol 905 ◽  
pp. 167-170 ◽  
Author(s):  
Yeon Jae Kim ◽  
Dong Hyun Kim ◽  
Jung Soo Kim ◽  
Jae Ho Jang ◽  
Uoo Chang Jung ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Surface Properties ◽  
Proton Exchange Membrane ◽  
Spray Coating ◽  
Bipolar Plate ◽  
Proton Exchange ◽  
Electrical Performance ◽  
Bipolar Plates ◽  
Exchange Membrane

Chemical converted graphene (CCG) were coated on 316L stainless steel as a bipolar plate which is a component of proton exchange membrane fuel cell (PEMFC) by electro spray coating (ESC). Scanning electron microscope (SEM) and X-ray diffraction (XRD) were used to examine the thickness and surface properties of coating layer. Electrochemical potentiodynamic test was conducted in acidic atmosphere (0.1N H2SO4+2ppm F-) at 80°C using Versastat 4 and analysis program for corrosion resistance measurement. After packing bipolar plates for PEMFC stack, the electrical performances of graphite, bare SS316L and graphene coated SS316L bipolar plates were evaluated by PEMFC evaluating device. The chemical converted graphene was founded on the surface of coated SS316L, and the thickness was 12μm. Graphene coated bipolar plate showed high corrosion resistance of 1.32×10-7A/cm2beside bare SS316L bipolar plate. In electrical performance evaluation, the graphene coated bipolar plate was shown 0.978V on Voc and 0.5A/m2on the reduction potential (0.6V). Although the electrical performance of the graphene coated bipolar plate is lower than graphite bipolar plate, the thickness and weight is lower than graphite bipolar plate. These advantages can enable the PEMFC system more efficiently and economically.

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