线性扫描伏安法的基本原理与伏安图解析  

Principles of Linear Sweep Voltammetry and Interpretations of Voltammograms

作　　者：胡成国[1] 华雨彤 Chengguo Hu;Yutong Hua(College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学化学与分子科学学院,武汉430072

出　　处：《大学化学》2021年第4期122-128,共7页University Chemistry

摘　　要：从线性扫描伏安法的定义和原理出发,通过考察伏安测试的装置和电极反应过程,推测出影响线性扫描伏安图形状的基本要素,即电极反应过程中的异相电子转移与液相传质之间的物质"供求关系",决定了线性扫描伏安图的形状特征。在此基础上,结合一系列不同电化学测试条件下的伏安行为,如常规电极与超微电极、可逆与不可逆电极过程、静止电极与旋转圆盘电极以及电催化等,阐述了该"供求关系"对伏安图形状影响的基本规律,为理解线性扫描伏安法的基本原理和数据解析提供参考。In this paper,we discussed the basic elements which affect the shape of linear sweep voltammograms in the reaction process on the electrode surface,that is,heterogeneous electron transfer and mass transfer in liquid phase.Derived from the basic definition and principle of voltammetry,the"supply-demand"mode between electron and mass transfer determines the characteristics of voltammograms.A series of voltammetric behaviors under different electrochemical testing conditions were discussed,including conventional electrodes and microelectrodes,reversible and irreversible electrode processes,stationary and rotating disk electrodes,and electrocatalysis.The basic laws that affect the shape of voltammograms provide a reference for understanding the fundamental principles of linear sweep voltammetry and data analysis.

关 键 词：线性扫描伏安法原理 电极反应过程 伏安图解析 常规与超微电极 可逆性 旋转圆盘电极 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]