Browse > Article

A Study on the Electrical Circuit Model of the Electrode/Electrolyte Interface for Improving Electrochemical Impedance Fitting  

Chang, Jong-Hyeon (고려대 공대 전기공학과)
Pak, Jung-Ho (고려대 공대 전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.56, no.6, 2007 , pp. 1087-1091 More about this Journal
Abstract
Exact impedance modeling of the electrode/electrolyte interface is important in bio-signal sensing electrode development. Therefore, the investigation of the equivalent circuit models for the interface has been pursued for a long time by several researchers. Previous circuit models fit the experimental results in limited conditions such as frequency range, type of electrode, or electrolyte. This paper describes a new electrical circuit model and its capability of fitting the experimental results. The proposed model consists of three resistors and two constant phase elements. Electrochemical impedance spectroscopy was used to characterize the interface for Au, Pt, and stainless steel electrode in 0.9% NaCl solution. Both the proposed model and the previous model were applied to fit the measured impedance results for comparison. The proposed model fits the experimental data more accurately than other models especially at the low frequency range, and it enables us to predict the impedance at very low frequency range, including DC, using the proposed model.
Keywords
Electochemical Impedance Spectroscopy; Electrode/Electrolyte Interface; Electrical Circuit Model;
Citations & Related Records

Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 G. T. A. Kovacs, 'Introduction to the Theory, Design. and Modeling of Thin-Film Microelectrodes for Neural Interfaces', in Enabling Technologies for Cultured Neural Networks, D. A. Stenger and T. M. McKenna, Eds. :New York Academic, 1994, Chap.7, pp. 121 - 165
2 D. R. Merrill, M. Biksonb, and J. G. R. Jefferys, 'Electrical Stimulation of Excitable Tissue: Design of Efficacious and Safe Protocols', Journal of Neuroscience Methods, vol. 141, pp. 171-198, February 2005   DOI   ScienceOn
3 X. Huang, D. Nguyen, D. W. Greve, and M. M. Domach, 'Simulation of Microelectrode Impedance Changes Due to Cell Growth', IEEE Sensors Journal, vol. 4, no. 5, pp. 576-583, October 2004   DOI   ScienceOn
4 A. Richardot, and E. T. McAdams, 'Harmonic Analysis of Low-Frequency Bioelectrode Behavior', IEEE Transactions on Medical Imaging, vol. 21, no. 6, pp. 604-612, June 2002   DOI   ScienceOn
5 E. T. McAdams, and J. Jossinet, 'Nonlinear Transient Response of Electrode- Electrolyte Interfaces', Medical and Biological Engineering and Computing, vol. 38, pp. 427-432, July 2000   DOI   ScienceOn
6 L. Yang, C. Ruan, and Y. Li, 'Detection of Viable Salmonella Typhimurium by Impedance Measurement of Electrode Capacitance and Medium Resistance', Biosensors and Bioelectronics, vol. 19, pp. 495-502, June 2003   DOI   ScienceOn
7 C. Q. Huang, R. K. Shepherd, P. M. Carter, P. M. Seligman, and B. Tabor, 'Electrical Stimulation of the Auditory Nerve: Direct Current Measurement in vivo', IEEE Transactions on Biomedical Engineering, vol. 46, pp. 461-469, April 1999   DOI   ScienceOn
8 P. Thiebaud, C. Beuret, M. Koudelka-Hep, M. Bove, S. Martinoia, M. Grattarola, H. Jahnsen, R. Rebaudo, M. Balestrino, J. Zimmer, and Y. Dupont, 'An Array of Pt-tip Microelectrodes for Extracellular Monitoring of Activity of Brain Slices', Biosensors and Bioelectronics, vol. 14, pp. 61 - 65, July 1999   DOI   ScienceOn
9 L. A. Geddes, 'Historical Evolution of Circuit Models for the Electrode-Electrolyte Interface', Annals of Biomedical Engineering, vol. 25, pp. 1-14, January 1997   DOI   ScienceOn
10 B. Onaral, and H. P. Schwan, 'Linear and Nonlinear Properties of Platinum Electrode Polarization. Part 1: Frequency Dependence at Very Low Frequencies', Medical and Biological Engineering and Computing, vol. 20, pp. 299 - 306, May 1982   DOI
11 W. Franks, I. Schenker, P. Schmutz, and A. Hierlemann, 'Impedance Characterization and Modeling of Electrodes for Biomedical Applications', IEEE Transactions on Biomedical Engineering. vol. 52, no. 7, July 2005   DOI   ScienceOn