Materials and Coatings for Metallic Bipolar Plates in Polymer Electrolyte Membrane Fuel Cells

Turner, John A.

doi:10.1002/9783527650248.ch13

Cited by 1 publication

(1 citation statement)

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“…Bipolar plates are key component in PEMFCs. In PEMFC environment, bipolar plates are mostly in contact with acid aqueous solutions (pH3~4), which are often found with anions of SO , HCO 3 -, and F -, etc [1]. Thus, materials of bipolar plates must be corrosion-resistant in such environment.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Resistance of Brush Plated Pb/Ni Multilayer Coatings in a Simulated Environment of PEMFC

Tan

Qian

Xing

et al. 2010

AMR

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Pb/Ni multilayer coatings, with either Pb or Ni as the top layer, were brush plated on ANSI 304 stainless steel to improve its performance as bipolar plates in polymer electrolyte membrane fuel cells (PEMFC). Surface morphology and cross-sectional microstructure of the coatings were characterized with scanning electron microscope (SEM) and optical microscope, respectively. The corrosion resistance of brush plated coatings in a simulated PEMFC environment was investigated using both three-electrode method and immersion of 300 h. Coating surfaces after the immersion were characterized with energy dispersive X-ray spectrometer (EDS). The results show that the multilayer coatings were smooth, dense, and small in grain size with clear layered structure. In the simulated PEMFC environment, the corrosion of multilayer coatings was mainly uniform corrosion. Coatings with different top layers exhibit different corrosion behaviors. Ni layer was corroded preferentially as the anode while the Pb layer was protected.

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Section: Introductionmentioning

confidence: 99%