Electrochemical Impedance Spectroscopy as a Tool for Electrochemical Rate Constant Estimation

Chulkin, Pavel; Data, Przemyslaw

Abstract

Electrochemical impedance spectroscopy (EIS) was used for advanced characterization of organic electroactive compounds along with cyclic voltammetry (CV). In the case of fast reversible electrochemical processes, current is predominantly affected by the rate of diffusion, which is the slowest and limiting stage. EIS is a powerful technique that allows separate analysis of stages of charge transfer that have different AC frequency response. The capability of the method was used to extract the value of charge transfer resistance, which characterizes the rate of charge exchange on the electrode-solution interface. The application of this technique is broad, from biochemistry up to organic electronics. In this work, we are presenting the method of analysis of organic compounds for optoelectronic applications.

Citation

Chulkin, P., & Data, P. (2018). Electrochemical Impedance Spectroscopy as a Tool for Electrochemical Rate Constant Estimation. Journal of Visualized Experiments, Article e56611. https://doi.org/10.3791/56611

• Journal Article Type: Article
• Online Publication Date: Oct 10, 2018
• Publication Date: Oct 10, 2018
• Deposit Date: Feb 8, 2019
• Publicly Available Date: Feb 8, 2019
• Journal: Journal of Visualized Experiments
• Publisher: MyJove Corporation
• Peer Reviewed: Peer Reviewed
• Issue: 140
• Article Number: e56611
• DOI: https://doi.org/10.3791/56611