Influence of Electrolytic Cell System on Graphite Electrode Interface Properties

Abstract

Cyclic voltammetry (CV) and Electrochemical impedance spectroscopy (EIS) tests are used to investigate the performance of different cell systems. For two electrode button type cell, as the lack of reference electrode and its large contact resistance, it does not have the conditions on study the electrode/electrolyte interface performance effectively. Although the three-electrode button type cell shows some improvement on potential detection of the system which can partially eliminate the adverse effects caused by electrode polarization and reduce the contact resistance, there are some limitation on the investigation of the resistance of solid electrolyte interphase (SEI) film and charge transfer process. However, it can show the variation of kinetic parameters well in the three-electrode glass type cell, which is the premise on studying the reaction mechanism, failure mechanism and electrode interface characteristics of electrode materials.