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

Joon Young Kim; Chanmin Jo; Dae Jun Moon; Gyoung Hwa Jeong; Gnanaprakasam Janani; Seungryul Yoo; Dong Chan Seok; Seon Yeop Jung (정선엽); Tae‑Hoon Kim (김태훈); Ho‑Young Jung (정호영); Uk Sim (심욱)

doi:10.1007/s42823-024-00817-y

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 : September 21, 2024
Published : March 28, 2025

Joon Young Kim ¹, Chanmin Jo ¹, Dae Jun Moon ¹, Gyoung Hwa Jeong ¹, Gnanaprakasam Janani ¹, Seungryul Yoo ², Dong Chan Seok ², Seon Yeop Jung ³, Tae‑Hoon Kim ⁴, Ho‑Young Jung ⁴, Uk Sim ⁵

¹Korea Institute of Energy Technology (KENTECH)
²Korea Institute of Fusion Energy (KFE)
³단국대학교
⁴전남대학교
⁵한국에너지기술연구원

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.

KEYWORDS

Metal–carbon, ZnPb/C, Bipolar plate, Unitized regenerative fuel cell

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* References for papers published after 2025 are currently being built.

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Carbon Letters 2025 KCI Impact Factor : 0.73 KCI-WoS Impact Factor : 6.26

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

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* References for papers published after 2025 are currently being built.

Carbon Letters 2025 KCI Impact Factor : 0.73 KCI-WoS Impact Factor : 6.26

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

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