A physical interpretation of Schwan's limit current of linearity

In this the second of a series of papers on the nonlinearity of the electrode-electrolyte interface impedance, the wealth of experimental observations which exists in the literature on AC impedance nonlinearity is physically interpreted. The interface impedance is well represented by the parallel combination of a constant phase angle impedance and a charge transfer resistance. The charge transfer resistance is the major source of the observed nonlinearities. As a result, the current limit of linearity, iL, increases with frequency such that iL is proportional to ωβ. The series resistance, Rs, of the interface impedance initially increases with applied signal amplitude, reaches a maximum and then decreases. The series reactance, Xs, decreases monotonically with signal amplitude.

[1]  Eric McAdams,et al.  Electrode-electrolyte Interface Impedance: The Limit Current Of Linearity , 1991, Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society Volume 13: 1991.

[2]  D B Geselowitz,et al.  Nonlinearity of cardiac pacemaker electrodes. , 1969, IEEE transactions on bio-medical engineering.

[3]  H. Schwan,et al.  Linear and nonlinear properties of platinum electrode polarisation III: Equivalence of frequency-and time-domain behaviour , 2006, Medical and Biological Engineering and Computing.

[4]  Banu Onaral,et al.  A Unified Approach to Represent Metal Electrode Polarization , 1983, IEEE Transactions on Biomedical Engineering.

[5]  L. A. Geddes,et al.  Electrical properties of metallic electrodes , 1990, Medical and Biological Engineering and Computing.

[6]  Banu Onaral,et al.  Electrical Properties of Bioelectrodes , 1984, IEEE Transactions on Biomedical Engineering.

[7]  E. McAdams,et al.  DC nonlinearity of the solid electrode-electrolyte interface-impedance , 1991 .

[8]  H P Schwan,et al.  Alternating current electrode polarization , 1966, Biophysik.

[9]  M. D. Rooij,et al.  Electrochemical Methods: Fundamentals and Applications , 2003 .

[10]  J. D. Bourland,et al.  The Rectification Properties of an Electrode-Electrolyte Interface Operated at High Sinusoidal Current Density , 1987, IEEE Transactions on Biomedical Engineering.

[11]  Eric McAdams.  A study of electrode-tissue impedances encountered in cardiac pacing , 1987 .

[12]  L. A. Geddes,et al.  The impedance of stainless-steel electrodes , 1971, Medical and biological engineering.

[13]  B. Onaral,et al.  Linear and nonlinear properties of platinum electrode polarisation II: time domain analysis , 1983, Medical and Biological Engineering and Computing.

[14]  J. Jossinet,et al.  The detection of the onset of electrode-electrolyte interface impedance nonlinearity: A theoretical study , 1994, IEEE Transactions on Biomedical Engineering.

[15]  B. Onaral,et al.  Linear and nonlinear properties of platinum electrode polarisation. Part 1: frequency dependence at very low frequencies , 1982, Medical and Biological Engineering and Computing.

[16]  Herman P. Schwan,et al.  Nonlinear AC and DC Polarization of Platinum Electrodes , 1980, IEEE Transactions on Biomedical Engineering.

[17]  H P Schwan,et al.  ELECTRODE POLARIZATION IMPEDANCE AND MEASUREMENTS IN BIOLOGICAL MATERIALS * , 1968, Annals of the New York Academy of Sciences.