Abstract Current research on Cl− corrosion behavior has primarily focused on traditional Pb-Ag anode systems and the analysis of the effects of single concentration variables. While the CF/Ti/β-PbO2 composite anode developed by our research team previously demonstrated significant performance advantages in zinc electroplating applications, the dynamic competition mechanism between passivation and corrosion in chloride-containing electrolytic environments remains unclear. Especially under the synergistic effects of multiple parameters such as Cl− concentration, current density, and acid-to-zinc ratio, the evolution of the microstructure at the electrode interface and its structure-property correlation mechanism with macroscopic performance have not been systematically elucidated. Therefore, this study systematically investigated the influence of Cl− concentration, current density, and acid-to-zinc ratio on the performance of the CF/Ti/β-PbO2 anode during zinc electroplating. As the Cl− concentration increases, the corrosion rate and cell voltage of the CF/Ti/β-PbO2 anode also increase, and the self-corrosion potential decreases. When the Cl− concentration is 250 mg/L and the current density is 500 A/m², with an acid-to-zinc ratio of 3:1, the minimum corrosion rate is 1.5496 g/m2·h, the cell voltage is 2.96 V, the maximum Ecorr value is 1.0436 V, and the minimum Icorr value is 9.5080×10-5 A/cm2.
Liang et al. (2025) studied this question.
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