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ZnPb/C composites coating layer on stainless steel for bipolar plate of unitized regenerative fuel cells

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2025, 35(1), pp.365~371
  • DOI : 10.1007/s42823-024-00817-y
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : June 21, 2024
  • Accepted : October 14, 2024
  • Published : March 28, 2025

Jung Ho-Young 1 심욱 1

1전남대학교

Accredited

ABSTRACT

For the commercialization of bipolar plates, several properties must be considered together. Electrical conductivity, corrosion resistance, contact resistance, mechanical strength, and light weight are essential evaluation factors, with corrosion resistance and durability being significant for unitized regenerative fuel cells (URFCs), which must operate in electrolysis and fuel cell mode. However, improving both properties is challenging, since corrosion resistance is largely inversely proportional to conductivity. In this study, to improve both properties together, composites composed of Pb and Zn with excellent conductivity and corrosion resistance were prepared with graphite powder and formed as a coating layer on the surface of 304 stainless steel (SS304) and evaluated for electrical conductivity and corrosion resistance. Among the ZnPb/C composites prepared at various ratios, Zn8Pb2/C exhibited the lowest transmittance resistance of 1.566 Ω, and improved electrical conductivity and durability compared to bare SS304.

Citation status

* References for papers published after 2023 are currently being built.