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Electrodeposition of tantalum and niobium using ionic liquid.

机译:使用离子液体电沉积钽和铌。

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摘要

Ionic liquids are molten salts with melting points below 100°C and they consist entirely of cations and anions. The development of ionic liquids, especially air and water stable types, has attracted extensive attention since they have outstanding physical properties. Part I of the study focused on the pre-electrolysis process performed to remove impurities from the ionic liquid, 1-butyl-1-methyl-pyrrolidinium bis(tri-fluoromethylsulfonyl)imide, ([BMP]Tf2N). Part II investigated the electroreduction of TaF 5 and NbF5 from room temperature ionic liquid at 100°C at a wide range of potentials and different time durations for the purpose of determining the optimal conditions for the electrodeposition of tantalum. The study was carried out using potentiostatic polarization for the pre-electrolysis treatments and electrodeposition and cyclic voltammetry to study the behaviour of the liquid at various stages. Potentiostatic depositions were complemented by scanning electron microscopy (SEM)/energy-dispersive x-ray analysis (EDX), x-ray photoelectron spectroscopy (XPS) and x-ray diffraction (XRD) for characterization of the electrodeposits.
机译:离子液体是熔点低于100°C的熔融盐,它们完全由阳离子和阴离子组成。离子液体,特别是空气和水稳定型离子液体的开发,由于其具有出色的物理性能,因此受到了广泛的关注。研究的第一部分集中于从离子液体1-丁基-1-甲基-吡咯烷鎓双(三氟甲基磺酰基)酰亚胺([BMP] Tf2N)去除杂质的预电解过程中。为了确定钽电沉积的最佳条件,第二部分研究了室温下离子液体在100℃,宽电位范围和不同持续时间下对TaF 5和NbF5的电还原作用。使用恒电位极化进行预电解处理以及电沉积和循环伏安法进行研究,以研究液体在各个阶段的行为。通过扫描电子显微镜(SEM)/能量色散X射线分析(EDX),X射线光电子能谱(XPS)和X射线衍射(XRD)来补充定电沉积,以表征电沉积。

著录项

  • 作者

    Barbato, Giuseppina.;

  • 作者单位

    University of Toronto (Canada).;

  • 授予单位 University of Toronto (Canada).;
  • 学科 Engineering Materials Science.
  • 学位 M.A.Sc.
  • 年度 2009
  • 页码 102 p.
  • 总页数 102
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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