- 作者: 楊明桓、孫亦文
- 作者服務機構: Department of Chemistry, National Cheng-Kung University, Tainan, Taiwan 70101, R.O.C.
- 中文摘要: 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.
- 英文摘要: --
- 中文關鍵字: Electrochemistry; Electrodeposition; Indium; Tetrafluoroborate; Ionic liquid.
- 英文關鍵字: --