Method for testing electrochemical properties

摘要

A method for determining an effective electrode area and / or a degree of electrode dirt in an electrochemical system containing a sample, in which the electrochemical system includes an electrode having a surface, in which the surface includes a portion of contact and a non-contact portion, in which the contact portion of the electrode is in electrolytic contact with the sample, and the non-contact portion of the electrode is not in contact with the sample, characterized in that the method comprises stages of applying a variable potential stimulus with the high frequency time of small amplitude to the system to generate a signal response from the sample that has an approximately linear relationship with the applied potential, measure the signal response, compute information of capacity from the signal response from the sample that can be approximated by a linear relationship with the pot applied, and determine an indicative value of an effective electrode area and / or a degree of electrode dirt from the capacity information.