...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Electrochemistry >Electrochemical behaviour of cadmium in NaOH solution
【24h】

Electrochemical behaviour of cadmium in NaOH solution

机译：镉在NaOH溶液中的电化学行为

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The electrochemical behaviour of cadmium in 1 M NaOH solution was studied. Different electrochemical methods such as potentiodynamic measurements, polarization techniques and electrochemical impedance spectroscopy (EIS) were used. During the course of polarization, several characteristic features were observed, including prepassivation and a relatively wide passive range extending over 1.4 V. Equivalent circuit models for the electrode-electrolyte interface under different applied potentials were proposed.The impedance data measured at steady state were fitted to calculated data according to proposed equivalent circuits. The relevance of the proposed equivalent circuits to the different phenomena occurring at the electrode-solution interface was discussed. The passive film formed on Cd is composed of two layers: a barrier layer in contact with metal and a deposit on the barrier layer. The barrier layer appears to form directly from the metal through a solid state reaction, rather than by a dissolution-precipitation mechanism. For an applied potential > + 0.7 V the relative passive film thickness and resistance decrease to lower values indicating transpassive dissolution at this potential.
机译：研究了镉在1 M NaOH溶液中的电化学行为。使用了不同的电化学方法，例如电位动力学测量，极化技术和电化学阻抗谱（EIS）。在极化过程中，观察到一些特征，包括预钝化和超过1.4 V的相对较宽的无源范围。提出了在不同施加电势下电极-电解质界面的等效电路模型。拟合了稳态下测得的阻抗数据根据建议的等效电路计算数据。讨论了提出的等效电路与电极-溶液界面处发生的不同现象的相关性。在Cd上形成的无源膜由两层组成：与金属接触的阻挡层和在阻挡层上的沉积物。阻挡层似乎是通过固态反应而不是通过溶解沉淀机制直接由金属形成的。当施加的电势> + 0.7 V时，相对的无源膜厚度和电阻减小至较低的值，表明在该电势下会发生过电流溶解。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号