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Electrochemical Impedance Spectroscopy and Steady-State Voltammetry at the Micro-between Two Immiscible Electrolyte Solutions

By Barry Richard Silver


The kinetic data of simple tetraethylammonium ion transfer across the water/1,2-DCE interface obtained by electrochemical impedance spectroscopy and steady-state voltammetry are compared. It is shown that the geometry of the microcapillary tip region is of critical importance to obtain reliable kinetic data. Quasi-reversible behavior of the ion transfer reaction, corresponding to an apparent standard rate constant of about 0.2 cm s-1, is observed with both experimental methods.\

Topics: ion transport; AC impedance; liquid-liquid interface
Year: 2016
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