Effects of water content on magnesium deposition from a Grignard reagent-based tetrahydrofuran electrolyte

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• 作者：Shunsuke Yagi (1)
  Akira Tanaka (1)
  Yuya Ichikawa (1)
  Tetsu Ichitsubo (2)
  Eiichiro Matsubara (2)
  
• 关键词：Mg deposition ; Grignard reagent ; Water ; Electrolyte
• 刊名：Research on Chemical Intermediates
• 出版年：2014
• 出版时间：January 2014
• 年：2014
• 卷：40
• 期：1
• 页码：3-9
• 全文大小：510 KB
• 作者单位：Shunsuke Yagi (1)
  Akira Tanaka (1)
  Yuya Ichikawa (1)
  Tetsu Ichitsubo (2)
  Eiichiro Matsubara (2)
  
  1. Nanoscience and Nanotechnology Research Center, Osaka Prefecture University, Sakai, 599-8570, Japan
  2. Department of Materials Science and Engineering, Kyoto University, Kyoto, 606-8501, Japan
  
• ISSN：1568-5675

文摘

It is well known that water causes decomposition of Grignard reagents. When these reagents are used, water or moisture should be eliminated. However, it is possible that a very small amount of water, for example, trapped in the walls of the glassware used, can enter the system even in a well-controlled Ar glove box. Therefore, in this work, the effect of very low concentrations of water on Mg deposition from a Grignard reagent-based electrolyte was studied. It was shown that a minute amount of water, although insufficient to cause destruction of the Grignard reagent, affects the overpotential for Mg deposition, resulting in Mg deposits of different morphology. For reproducible and reversible Mg deposition and dissolution, it is desirable that the water content of the electrolyte is kept as low as possible and the electrolyte is left to stand for at least several hours after preparation.