Anodic behaviour of zinc in methanol solutions of lithium perchlorate

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• 作者：Swiatowska-Mrowiecka ; Jolanta ; Banas ; Jacek
• 关键词：Zinc ; Methanol ; Dissolution ; Kinetics ; Mechanism
• 刊名：Electrochimica Acta
• 出版年：2005
• 出版时间：March 1, 2005
• 年：2005
• 卷：50
• 期：9
• 页码：1829-1840
• 全文大小：218 K

文摘

Anodic dissolution of poly- and single-crystals of zinc was performed in methanol solution of lithium perchlorate by means of cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The mechanism of anodic dissolution of zinc in organic solvents occurs in two oxidation steps. It is the first step that Formula Not Shown surface anodic product is created. Stability of the surface product is much better in anhydrous organic environments than in aqueous media; because the product is stable, a barrier layer composed of Formula Not Shown is formed at low anodic overvoltage. The formation of the Formula Not Shown layer is much stronger on the low index Formula Not Shown than on the high-index plane (0001), where the adsorption of anodic product is more difficult.