ZnCl2-EMIC离子液体中电沉积锌

来源期刊:中国有色金属学报2008年第6期

论文作者:马军德 李冰 颜灵光 陈彦

文章页码:1135 - 1135

关键词:Zn;ZnCl2;离子液体;电沉积;

Key words:Zn; ZnCl2; ionic liquids; electrodeposition;

摘    要:

采用ZnCl2-EMIC离子液体,用电化学方法对体系在镍电极和钨电极上的反应阴极过程进行研究,分析锌沉积机制,并用直流和脉冲电源进行电沉积实验,研究电流密度、温度和脉冲参数等因素对镀层的影响。结果表明:阴极反应为准可逆反应,锌离子在镍电极和钨电极上形核是三维瞬时形核半球形扩散长大过程,直流电流密度为4mA/cm2,温度为80 ℃时,镀层质量最好;脉冲电沉积得到的镀层要优于直流电沉积得到的镀层,尤其在脉冲宽度为2ms,脉冲间隔为8ms,电流密度为8mA/cm2时,得到的镀层光滑而均匀,颗粒大小接近0.3μm 。

Abstract: The electrodeposition of zinc from zinc chloride-1-ethyl-3-methylimidazolium chloride molten salt was adopt to study the process of the cathode reaction. The electrodeposition was carried out with direct current and impulse current. The factors influencing the coating were studied. The result indicate that: the electrodeposition of zinc on nickel and tungsten substrates involves instantaneous three-dimensional nucleation. The coating is the best when the current density is 4mA/cm2 and the temperature is 80 ℃. The coating by the method of the impulse electrodeposition is better than the direct current electrodeposition. Especially when f is 100Hz, ton/toff is 2/8 and J is 8mA/cm2, the coating is clean and uniformity. The crystal size is nearly 0.3μ m

基金信息:国家自然科学基金资助项目

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