SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (1): 130-139.

• • 上一篇    下一篇

Low-temperature Electrodeposition of Aluminium from Lewis Acidic 1-Allyl-3-methylimidazolium Chloroaluminate Ionic Liquids

郑勇1,2, 张锁江1, 吕兴梅1, 王倩1, 左勇1, 刘恋1,2   

  1. 1. Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
    2. College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2011-11-18 修回日期:2011-12-12 出版日期:2012-02-28 发布日期:2012-05-03
  • 通讯作者: ZHANG Suojiang,sjzhang@home.ipe.ac.cn
  • 基金资助:
    Supported by the National Basic Research Program of China (2009CB219901);the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2012BAF03B01);the National Natural Science Foundation of China (20906096,20873152);the Open-end Fund of State Key Laboratory of Multiphase Complex Systems (MPCS-2011-D-06)

Low-temperature Electrodeposition of Aluminium from Lewis Acidic 1-Allyl-3-methylimidazolium Chloroaluminate Ionic Liquids

ZHENG Yong1,2, ZHANG Suojiang1, Lü Xingmei1, WANG Qian1, ZUO Yong1, LIU Lian1,2   

  1. 1. Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
    2. College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2011-11-18 Revised:2011-12-12 Online:2012-02-28 Published:2012-05-03
  • Supported by:
    Supported by the National Basic Research Program of China (2009CB219901);the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2012BAF03B01);the National Natural Science Foundation of China (20906096,20873152);the Open-end Fund of State Key Laboratory of Multiphase Complex Systems (MPCS-2011-D-06)

摘要: Lewis acidic 1-allyl-3-methylimidazolium chloroaluminate ionic liquids were used as promising electrolytes in the low-temperature electrodeposition of aluminium.Systematic studies on deposition process have been performed by cyclic voltammetry and chronoamperometry.The surface morphology and X-ray diffraction(XRD) patterns of deposits prepared at different experimental conditions were also investigated.It was shown that the nu-cleation density and growth rate of crystallites had a great effect on the structure of aluminium deposited.The crys-tallographic orientation of deposits was mainly influenced by temperature and current density.Smooth,dense and well adherent aluminium coatings were obtained on copper substrates at 10-25 mA·cm-2 and 313.2-353.2 K.More-over,the current efficiency of deposition and purity of aluminium have been significantly improved,demonstrating that the ionic liquids tested have a prospectful potential in electroplating and electrorefining of aluminium.

关键词: ionic liquid, low temperature, electroplating, electrodeposition, deposits

Abstract: Lewis acidic 1-allyl-3-methylimidazolium chloroaluminate ionic liquids were used as promising electrolytes in the low-temperature electrodeposition of aluminium.Systematic studies on deposition process have been performed by cyclic voltammetry and chronoamperometry.The surface morphology and X-ray diffraction(XRD) patterns of deposits prepared at different experimental conditions were also investigated.It was shown that the nu-cleation density and growth rate of crystallites had a great effect on the structure of aluminium deposited.The crys-tallographic orientation of deposits was mainly influenced by temperature and current density.Smooth,dense and well adherent aluminium coatings were obtained on copper substrates at 10-25 mA·cm-2 and 313.2-353.2 K.More-over,the current efficiency of deposition and purity of aluminium have been significantly improved,demonstrating that the ionic liquids tested have a prospectful potential in electroplating and electrorefining of aluminium.

Key words: ionic liquid, low temperature, electroplating, electrodeposition, deposits

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