循环伏安法原理的分析与讨论

Discussion on the Principles of Cyclic Voltammetry

循环伏安(CV)法是重要的电化学研究方法之一。然而大学仪器分析课程中只对其测量原理作了简单陈述,而未对测试过程中发生的电极反应作深入介绍,使学生无法深刻理解CV曲线的含义。本文从电极反应过程入手,讨论了电极/界面处电活性物质浓度随电势变化的规律,以及浓度和扫描速度等对CV曲线的影响。最后,剖析了蕴含在CV中的哲学原理。本讨论可为教学提供一定的参考。

Cyclic voltammetry(CV)is one of the most important electrochemical research methods;however,many instrumental analysis textbooks only briefly discuss CV operating principles.The electrode reaction processes are not discussed in-depth;consequently,students can lack the necessary skills to interpret CV curves.This study analyzed the electrode processes to determine the changes in the concentration of electroactive materials at the electrode/interface.Furthermore,the characteristics of the CV curve and the effect of concentration and scanning speed on the CV curve are also described.Finally,the philosophical principles contained in CV are discussed.This study can provide reference information for both peer teaching and student learning.