| La3+离子在EMIMBF4离子液体中的电化学行为研究 |
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| 引用本文： | 金炳勋,谢宏伟,顾惠敏,翟玉春.La3+离子在EMIMBF4离子液体中的电化学行为研究[J].稀有金属材料与工程,2012,41(4):599-602. |
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| 作者姓名： | 金炳勋 谢宏伟 顾惠敏 翟玉春 |
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| 作者单位： | 1. 东北大学,辽宁沈阳110819;金策工业综合大学,朝鲜平壤
2. 东北大学,辽宁沈阳,110819 |
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| 基金项目： | 国家自然科学基金 (N100302008) |
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| 摘 要： | 采用三电极体系对La3+离子在0.01mol/LLaCl3-0.1mol/LLiCl-EMIMBF4离子液体电化学还原制备金属镧的电极过程进行了研究。循环伏安法结合恒电位电解法研究结果表明:La3+离子的电化学还原是不可逆过程,还原步骤为一次完成La3++3e-→La。计时电流法结合恒电位电解法研究表明:La3+离子的还原过程受到扩散控制,传递系数和扩散系数分别为0.0492和(1.07～1.19)×10-6cm2/s。
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| 关 键 词： | 电化学 离子液体 电沉积 金属镧 |
| 收稿时间： | 2011/4/19 0:00:00 |
Electrochemical Study on Electrodeposition of La3+ in EMIMBF4 Ionic Liquid |
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| Kim Pyonghun,Xie Hongwei,Gu Huimin and Zhai Yuchun.Electrochemical Study on Electrodeposition of La3+ in EMIMBF4 Ionic Liquid[J].Rare Metal Materials and Engineering,2012,41(4):599-602. |
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| Authors: | Kim Pyonghun Xie Hongwei Gu Huimin and Zhai Yuchun |
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| Affiliation: | Northeastern University, Shenyang 110819, China |
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| Abstract: | The electrodeposition of lanthanum on a Pt electrode was investigated in 0.01 mol/L LaCl3-0.1 mol/L LiCl-EMIMBF4 ionic liquid.The cyclic voltammetry,chronoamperometry and constant voltage electrolysis techniques were employed.The results of the cyclic voltammogram and the XRD pattern of deposits after electrolysis under constant voltage have supported a one step electrodeposition mechanism of lanthanum,La3+ + 3e-→La.The results also indicate that the reduction of La3+ ion is irreversible.The transfer coefficient and the diffusion coefficient of La3+ ion in 0.01 mol/L LaCl3-0.1 mol/L LiCl-EMIMBF4 ionic liquid are 0.0492 and(1.07-1.19)×10-6 cm2/s,respectively. |
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| Keywords: | electrochemistry ionic liquid electrodeposition lanthanum |
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