Simulating ion transfer across a liquid-liquid interface and electrocapillarity based on the electrochemical potential of all ions in the system

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作   者：

Kitazumi, Yuki;  Sowa, Keisei;  Shirai, Osamu; 

作者机构：

Kyoto University Graduate School of Agriculture Faculty of Agriculture Department of Applied Life Sciences; 

关键词：

IMMISCIBLE ELECTROLYTE-SOLUTIONS;  TENSION;  Charging current;  Potential window;  CAPACITANCE;  Electrocapillary curve;  NITROBENZENE;  TRANSPORT;  DYNAMICS;  Ion -transfer voltammogram;  Nernst -Planck equation;  WATER;  VOLTAMMETRY; 

期刊名称：

Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry

i s s n：

1572-6657

年卷期：

2024 年 960 卷

页   码：

ARTN 118209-

页   码：

摘   要：

The liquid-liquid interface between two immiscible electrolyte solutions is an important subject in electrochemistry because ion-transfer reactions can be controlled externally. The electrochemical potentials of ions determine their behavior in a liquid-liquid two-phase system. The electrochemical potential is a continuous function of the system assuming a linear transition region at the interface. A simulation model that considers the electrochemical potential of all ions in the system was constructed for the liquid-liquid interface under electrochemical-measurement conditions. This model facilitates evaluating ion-transfer voltammograms affected by IR drops and separating charging currents from Faraday currents. Moreover, the model enables electrocapillary curves to be determined.