Fluoride-Induced Corrosion of Stainless Steel: A Case Study for its Application as Proton Exchange Membrane Water Electrolysis Bipolar Plate Material.

ABSTRACT: Stainless steel is a promising material for bipolar plates (BPP) in proton exchange membrane water electrolysis (PEMWE) that could drastically reduce stack costs. However, dissolution of Fe from stainless steel BPP might trigger membrane degradation, which releases fluoride. Fluoride in turn could accelerate stainless steel corrosion. Therefore, the influence of fluoride contamination (namely 0, 1, 5, and 20 ppm in 0.5 mM H₂SO₄) on the dissolution stability of stainless steel (316L) is investigated utilizing a scanning flow cell coupled on-line to an inductively coupled plasma mass spectrometer (SFC-ICP-MS). Fluoride enhances the dissolution exponentially, resulting in enhanced dissolution efficiencies with increased fluoride concentration reaching ≈50% at 20 ppm. Com

SUBMITTER: Fiedler L 

PROVIDER: S-EPMC12584964 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature