| 铜离子对镍在玻碳电极上电结晶行为的影响 |
| |
| 引用本文： | 刘宇,谭澄宇,贾志强,胡炜.铜离子对镍在玻碳电极上电结晶行为的影响[J].中南大学学报(自然科学版),2010,41(1). |
| |
| 作者姓名： | 刘宇 谭澄宇 贾志强 胡炜 |
| |
| 作者单位： | 中南大学,材料科学与工程学院,有色金属材料科学与工程教育部重点实验室,湖南,长沙,410083 |
| |
| 摘 要： | 利用循环伏安法和恒电位阶跃技术,研究浓度为0.01mol/L铜离子对镍在玻碳电极上电结晶行为的影响。研究结果表明:在含0.01mol/L铜离子的Watts镀液中,电位在-0.3V左右出现铜的还原反应峰,当电位负移到-0.75V时,镍开始结晶沉积;与纯Watts镀液(电位约-0.85V)相比,铜离子的引入促进了镍的电结晶形核和生长,这是因为铜离子的存在降低了镍电结晶形核过电位;在含0.01mol/L铜离子的Watts镀液中,电结晶过程仍基本遵循Scharifker-Hill模型,铜离子的引入并没有改变镍电结晶行为;高负电位下,金属离子的结晶成核方式遵循瞬时成核机制,低负电位下则趋向遵循连续成核机制。
|
| 关 键 词： | 电结晶 形核 循环伏安 计时安培 |
Effect of copper ions on behavior of nickel electro-crystallization on glassy carbon electrode |
| |
| LIU Yu,TAN Cheng-yu,JIA Zhi-qiang,HU Wei.Effect of copper ions on behavior of nickel electro-crystallization on glassy carbon electrode[J].Journal of Central South University:Science and Technology,2010,41(1). |
| |
| Authors: | LIU Yu TAN Cheng-yu JIA Zhi-qiang HU Wei |
| |
| Institution: | LIU Yu,TAN Cheng-yu,JIA Zhi-qiang,HU Wei (Key Laboratory for Nonferrous Materials Science , Engineering,Ministry of Education,School of Materials Science , Engineering,Central South University,Changsha 410083,China) |
| |
| Abstract: | Effect of 0.01 mol/L copper ions on the nickel electro-crystallization behavior on glassy carbon electrode (GCE) was investigated by means of chronoamperometry method in conjunction with the cyclic voltammetry (CV) method. The CV curves show that when 0.01 mol/L copper ions are brought into Watts solution, the peak of copper deoxidizing reaction is at potential -0.3 V (vs. SCE) or so and nickel begins to deposit at -0.75 V. Compared with Watts solution (the potential is about -0.85 V), the entering of coppe... |
| |
| Keywords: | electro-crystallization nucleation cyclic voltammetry chronoamperometry |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
