Regularities of cathode deposit formation during simultaneous reduction and exchange reactions. The mechanism of UO₂-ZrO₂ cathode deposit formation

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• 作者：V.Ye. Krotov
• 关键词：Molten salt electrolyte ; Cathode deposit ; UO2-ZrO2 system ; Mechanism of formation ; Simultaneous reduction and exchange reactions
• 刊名：Electrochimica Acta
• 出版年：1 January, 2014
• 年：2014
• 卷：115
• 期：Complete
• 页码：28-30
• 全文大小：568 K

文摘

This paper describes an empirically demonstrated mechanism of UO₂-ZrO₂ cathode deposit formation during the (NaCl-KCl)_equim.-UO₂Cl₂-ZrCl₄ melts electrolysis.

The first layer of the cathode product was formed through UO₂²⁺ ion reduction to uranium dioxide followed by an exchange reaction with Zr⁴⁺ ions, which are present in the electrolyte. The subsequent reactions proceeded through simultaneous reduction and exchange reactions at the cathode.