电化学阻抗谱在本科实验教学中的应用

Applications of Electrochemical Impedance Spectroscopy in Undergraduate Experimental Teaching

电化学阻抗谱是常用的一种电化学测试技术,该方法具有频率范围广、对体系扰动小的特点,是研究电极过程动力学、电极表面现象以及测定固体电解质导电率的重要工具。本文以固体氧化物燃料电池的电化学阻抗谱的测试为例设计了一套在线分析电化学阻抗的应用课程。介绍了电化学阻抗谱的原理,数据采集方法和数据处理方法,阐述了电化学阻抗谱技术在本科实验教学中的可行性和重要性。

Electrochemical impedance spectroscopy is a common electrochemical testing technology. It has many features such as wide frequency range, small system disturbance.It has been used to study kinetics of electrode process,surface phenomena of electrode as well as measurement of solid electrolyte’ s conductivity.In this paper,an experimental course is designed to test the EIS of solid oxide fuel cell by applying on-line imped-ance analyzer. The principle of electrochemical impedance spectroscopy, data collection method and data pro-cessing method are introduced.The feasibility and significance of the electrochemical impedance spectroscopy in undergraduate teaching are also demonstrated.