%0 Journal Article
%T Electrochemical Impedance Spectroscopy for Investigation on Ion Permeation in Thioctic Acid Self-Assembled Monolayer
%A Fupeng Zhi
%A Qian Ma
%A Yanli Bai
%A Shiqing Qi
%J Journal of Surface Engineered Materials and Advanced Technology
%P 38-43
%@ 2161-489X
%D 2019
%I Scientific Research Publishing
%R 10.4236/jsemat.2019.93004
%X Electrochemical
impedance spectroscopy was employed to investigate the permeation of
electrolyte ions in thioctic acid self-assembled monolayer when its structure
was changed by the interaction of copper ions. The ion permeation was
evaluated by using relatively low excitation frequencies, 0.2 Hz to 1000 Hz,
and quantified by an extra resistive component in the equivalent circuit (R<sub>SAM</sub>). The extent of ion permeation affected by the electrode potentials
and the electrolyte concentration were investigated. The experimental results
verified that R<sub>SAM</sub> decreased