Elimination of diffusion contributions to the overpotential by impedance spectroscopy

3 Elimination of diffusion contributions to the overpotential by impedance spectroscopy 

Impedance spectroscopy in the high-frequency region is another way of eliminating diffusion overpotential. The equations were given in Chapter 5. The combination of the double-layer equivalent circuit with the diffusion impedance was described in Section 5.23 and examples for the determination of the charge transfer resistance at high frequencies were given. 

Erdey-Gruz, M. Volmer, Z. physikal. Chem., 150A, 203 (1930). 

Quantities, Units and Symbols in Physical Chemistry (so-called Green Book ), 3rd Ed., Blackwell Science, Oxford. 

Levich, Present status of the theory of oxydation-reduction in solution (bulk and electrode reactions) in P. Delahay (Ed.), Advances in Electrochemistry and Electrochemical Engineering, Vol. 4, Interscience Publ., New York, 1966, p. 249. 

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