How do chloride ions promote the anodic reactions?
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Chloride ions promote anodic reactions by accelerating the consumption of organic additives and facilitating their adsorption on the cathode surface . They also have a depolarizing effect, decreasing the polarization and activation energy of electrode processes . The presence of chloride ions can increase the stability of the passive state in nickel-chromium alloys, but inhibit passivity in high nickel alloys . Additionally, chloride ions can affect the behavior of mixed oxide coatings on titanium during the anodic discharge of chloride ions . The exact mechanisms by which chloride ions promote anodic reactions vary depending on the specific system and conditions, but they generally involve competition with other ions in the electrolyte, changes in the deposit potential, and the formation of intermediate complexes on the electrode surface .
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