SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (12): 1397-1403.DOI: 10.1016/S1004-9541(13)60641-2

• 材料与产品工程 • 上一篇    下一篇

Electrodeposition Behavior of Nickel from a Low Temperature Urea-molten Salt

张启波, 华一新   

  1. Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
  • 收稿日期:2012-06-13 修回日期:2012-10-26 出版日期:2013-12-28 发布日期:2013-12-27
  • 通讯作者: ZHANG Qibo
  • 基金资助:

    Supported by the National Natural Science Foundation of China (51204080, 51274108, 21263007), the Natural Science Foundation of Yunnan Province (2011FA009), and the Application Foundation Research of Yunnan Province (2011FZ020).

Electrodeposition Behavior of Nickel from a Low Temperature Urea-molten Salt

ZHANG Qibo, HUA Yixin   

  1. Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
  • Received:2012-06-13 Revised:2012-10-26 Online:2013-12-28 Published:2013-12-27
  • Contact: ZHANG Qibo
  • Supported by:

    Supported by the National Natural Science Foundation of China (51204080, 51274108, 21263007), the Natural Science Foundation of Yunnan Province (2011FA009), and the Application Foundation Research of Yunnan Province (2011FZ020).

摘要: The electrodeposition behavior of nickel at glassy carbon (GC) and stainless steel (SS) electrodes in low temperature urea-acetamide-NaBr-KBr melt was investigated using cyclic voltammetry, chrono-amperometric current-time transients and scanning electron microscopy. Cyclic voltammograms and dimensionless chronoamperometric current-time transients analysis show that the electrodeposition of nickel is an irreversible process and proceeds via three-dimensional progressive nucleation with diffusion-controlled growth on both GC and SS substrates. Scanning electron microscopic analysis indicates the nickel deposits obtained on SS electrode are generally uniform, dense, and adherent to the substrate with rounded crystallites in the nanometer size regime. It is also found that the crystal structure of the electrodeposited nickel is independent on the deposition potential. The nickel deposits produced from the melt at higher cathodic potential exhibit larger grain size.

关键词: electrodeposition, nickel, urea molten salt, nucleation

Abstract: The electrodeposition behavior of nickel at glassy carbon (GC) and stainless steel (SS) electrodes in low temperature urea-acetamide-NaBr-KBr melt was investigated using cyclic voltammetry, chrono-amperometric current-time transients and scanning electron microscopy. Cyclic voltammograms and dimensionless chronoamperometric current-time transients analysis show that the electrodeposition of nickel is an irreversible process and proceeds via three-dimensional progressive nucleation with diffusion-controlled growth on both GC and SS substrates. Scanning electron microscopic analysis indicates the nickel deposits obtained on SS electrode are generally uniform, dense, and adherent to the substrate with rounded crystallites in the nanometer size regime. It is also found that the crystal structure of the electrodeposited nickel is independent on the deposition potential. The nickel deposits produced from the melt at higher cathodic potential exhibit larger grain size.

Key words: electrodeposition, nickel, urea molten salt, nucleation