Inorganic & Optoelectronic Materials Lab

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Electrochemical Impedance Spectroscopy (EIS)

Electrochemical Impedance Spectroscopy (EIS) - PalmSensElectrochemical Impedance Spectroscopy (EIS) is an electrochemical techniques to measure the impedance of a system in dependence of the AC potentials frequency.

Bode and Nyquist Plot - PalmSensIn this chapter the two main ways of visualizing Electrochemical Impedance Spectra (EIS), the Nyquist and Bode plot, are presented and it is explained how different EIS of easy electronic circuits will be plotted in the Bode and Nyquist plot. This demonstrates the advantages and disadvantages of the two plots as well as serving as a foundation to understand the analysis of EIS by utilizing equivalent circuits.

Frequency response analyzer - PalmSensNowadays, potentiostats are usually equipped with a frequency response analyzer so that you only need one device for the entire experimental setup. If you need a frequency response analyzer, the purchase of a PalmSens4 portable potentiostat is your best choice.

Capacitive Current - PalmSensUnderstanding capacitive charging current is important for understanding electrochemical experiments, so in this section the origin and equations for capacitive charging current will be explained. Afterwards the effect of capacitive current during Cyclic Voltammetry and Linear Sweep Voltammetry is discussed

Equivalent circuit fitting for corrosion measurements - PalmSensIn this section of the handbook the Warburg Impedance and the Constant Phase Element (CPE) are introduced, which represent electrochemical effects with no corresponding real electronic components. Furthermore, some equivalent circuits for typical corrosion systems are presented.

化学基础-EIS系列之基本元件和基本电路的阻抗要想掌握EIS，首先得弄清楚三个基本元件的阻抗是如何来的。三个基本元件为电阻、电容和电感，另外还有如CPE以及扩散阻抗W等，在此基础上继续掌握串联和并联两个基本电路。了解它们，对继续深入了解EIS非常有帮助。…

电化学交流阻抗实操要点与答疑值此盛夏，小编奉上电化学阻抗谱实操要点。就以往经验来看，同学们在测试EIS的时候往往纠结的地方包括偏压设置、频率设置、振幅设置，还有数据分析包括Rs是哪一段、低频斜线部分含义以及一些不太常见的特异情况，…

Basics

Voltammetry

EIS

PECs

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