潘秉锁,方小红,黄志强.铈离子对镍电结晶过程的影响[J].表面技术,2010,39(3):23-25.
PAN Bing-suo,FANG Xiao-hong,HUANG Zhi-qiang.Effects of Cerium Ions on the Electrocrystallization of Nickel[J].Surface Technology,2010,39(3):23-25 |
| 铈离子对镍电结晶过程的影响 |
| Effects of Cerium Ions on the Electrocrystallization of Nickel |
| 投稿时间：2010-01-23 修订日期：2010-06-10 |
| DOI： |
| 中文关键词: 电结晶 铈 成核机理 交流阻抗 |
| 英文关键词:electrocrystallization cerium nucleation mechanism AC impedance |
| 基金项目: |
|
|
|
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 为了解铈离子对镍电沉积电极过程的影响,采用线性扫描伏安法、单电位阶跃计时电流法、交流阻抗谱等方法,对镍在玻碳电极上的电沉积进行了研究。实验结果表明:CeCl3的加入使镍离子的扩散系数下降、电荷传递电阻增大,加大了镍沉积的阴极极化,同时使电结晶成核速率常数增大,晶体向外生长速度下降。这些变化可能与Ce3+及在沉积过程中形成的Ce3+多核配离子吸附在阴极表面有关。但铈离子的加入没有改变镍在玻碳电极上的电结晶成核机理。 |
| 英文摘要: |
| To understand the cathodic process of nickel electrodeposition, linear sweep voltammetry, single potential step chronoamperometry and electrochemical impedance spectroscopy were employed to comparatively study the electrocrystallization of nickel in watts bath and watts bath containing cerium ions. The experimental results show that the addition of CeCl3decreases the diffusion coefficient of Ni2+ and enhances charge transfer resistance, resulting in the increase in cathodic polarization; Simultaneously, it increases the nucleation rate constant of electrocrystallization of nickel on glassy carbon electrode and reduces the outward growth rate of crystal. These changes can result from the adsorption of Ce3+ and Ce3+ multi-core complex ions on cathode surface. However, the addition of Ce3+ does't change the nucleation and growth mechanism of nickel electrocrystallization on glassy carbon electrode. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501715号