Electrochemical study of indium in a water-stable 1-ethyl-3- methylimidazolium chloride/tetrafluoroborate room temperature ionic liquid

Ming Huan Yang, I. Wen Sun

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

The electrochemistry of indium species was investigated at glassy carbon, tungsten and nickel electrodes in a basic 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate ionic liquid. Amperometric titration experiments suggest that In(III) chloride is complexed as [InCl5]2- in this ionic liquid. The electrochemical reduction of [InCl5] 2- to indium metal is preceded by overpotential driven nucleations. The effective anodic dissolution of indium to indium(III) requires, however, the presence of sufficient chloride ions at the electrode surface. The electrodeposition of indium at glassy carbon and tungsten electrodes proceeds via three-dimensional instantaneous nucleation with diffusion-controlled growth of the nuclei. At the nickel electrode, the deposition proceeds via three-dimensional progressive nucleation with diffusion-controlled growth of the nuclei. Raising the deposition temperature decreases the average radius of the individual nuclei, r. Scanning electron microscopic and x-ray diffraction data indicated that bulk crystalline indium electrodeposits could be prepared on nickel substrates within a temperature range between 30 and 120°C.

原文English
頁(從 - 到)253-260
頁數8
期刊Journal of the Chinese Chemical Society
51
發行號2
DOIs
出版狀態Published - 2004 四月

All Science Journal Classification (ASJC) codes

  • 化學 (全部)

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