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Kinetics and mechanism of the anodic dissolution of nickel in HCl-dimethylsulphoxide solutions

✍ Scribed by A.B. Delgado; D. Posadas; A.J. Arvia

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 820 KB
Volume: 21
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(76)85113-4

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✦ Synopsis

The anodic dissolution of nickel in HCl-DMSO solutions containing different supporting electrolytes has been studied between 2@45"C. The electrodissolution and electrodeposition are predominantly activated electrode processes. At high anodic potentials and in the presence of perchlorate ions at high concentration passivation sets in.

A probable reaction pathway is postulated which explains most of the experimental findings. Passivation corresponds to a salt precipitation-dissolution process at the electrode vicinity.

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