Electrochemical impedance spectroscopy in interfacial studies
2017; Elsevier BV; Volume: 1; Issue: 1 Linguagem: Inglês
10.1016/j.coelec.2017.01.006
ISSN2451-9111
AutoresTamás Pajkossy, Rafał Jurczakowski,
Tópico(s)Analytical Chemistry and Sensors
ResumoAn important role of the electrochemical impedance spectroscopy (EIS) is the characterization of the electrical double layer formed at the electrode/electrolyte interfaces. The phenomenological double layer studies with an aqueous and ionic liquid electrolytes are reviewed with a conclusion that the double-layer capacitance is frequency dependent as the rule rather than the exception. We discuss the impedance consequences of the non-uniform current distribution along the electrochemical interface, which also contributes to the apparent frequency dependence of the capacitance. Finally, we show recent articles on non-conventional EIS techniques with high lateral resolution or enabling fast measurements.
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