Electrochemical Impedance Spectroscopy for Electrocatalytic Interfaces and Reactions: Classics Never Die

Authors

HUANG Jun, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;Follow

Corresponding Author

HUANG Jun(jhuangelectrochem@qq.com)

Abstract

This review article recapitulates electrochemical impedance spectroscopy (EIS) studies in the field of electrocatalysis. The history of this specialized field, ranging from the beginning of the twentieth century to now, is outlined. We then chronicle milestones of the impedance theory. Special emphases are put on the Dolin-Ershler model, the prevailing model for analyzing adsorption impedance data. Afterwards, we narrow into a very specific and fundamental topic, the double-layer capacitance at platinum (Pt) single crystals. We discuss the challenges in experimentation and theoretical understanding thereof. We cast doubts into the validity of using the Dolin-Ershler model to obtain the double-layer capacitance in dilute solutions, in which case diffuse charge effects become important and the low-frequency part of double-layer capacitance is lost. We wish to see future progress in proving or disproving the recent theoretical prediction that Pt electrode possesses a non-monotonic surface charging relation and negative double-layer capacitances in the oxide formation region.

Graphical Abstract

Keywords

electrocatalysis, electrochemical impedance, chemisorption, electrode kinetics, electrical double layer

DOI Link

https://doi.org/10.13208/j.electrochem.181245

Publication Date

2020-02-28

Online Available Date

2019-11-06

Revised Date

2019-11-04

Received Date

2019-04-03

Recommended Citation

HUANG Jun. Electrochemical Impedance Spectroscopy for Electrocatalytic Interfaces and Reactions: Classics Never Die[J]. Journal of Electrochemistry, 2020 , 26(1): 3-18.
DOI: 10.13208/j.electrochem.181245
Available at: https://jelectrochem.xmu.edu.cn/journal/vol26/iss1/7