Cathodic Behaviour of Nickel in Alcohol Solutions of Electrolytes

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• 作者：Magdalena Bisztyga ; ^{mbisztyg@agh.edu.pl" class="auth_mail" title="E-mail the corresponding author} ; Urszula Lelek-Borkowska ; Edyta Proniewicz ; Jacek Banaś
• 关键词：methanol ; nickel ; cathodic reduction
• 刊名：Electrochimica Acta
• 出版年：2016
• 出版时间：20 July 2016
• 年：2016
• 卷：207
• 期：Complete
• 页码：1-8
• 全文大小：3040 K

文摘

Cathodic behavior of nickel was studied in anhydrous methanol containing sodium methylate. The behaviour of nickel at low overpotentials is determined by competitive processes, reduction of methanol and formation of surface product. The formation of surface layer is the result of a chemical oxidation of intermediate product (NiOCH_3surf). This reaction in the presence of CH₃O⁻ anions causes the precipitation of the Ni(OCH₃)₂ film. The process is accompanied by parallel electrochemical reduction of Ni²⁺ evidenced by a “limiting” current in the cathodic area. The methoxy film formation during cathodic polarization of the metal surface was confirmed by surface structure measurements.