Electrode impedance measurements

The use of impedance electrochemical techniques to study corrosion mechanisms and to determine corrosion rates is an emerging technology. Electrode impedance measurements have not been widely used, largely because of the sophisticated electrical equipment required to make these measurements. Recent advantages in microelectronics and computers has moved this technique almost overnight from being an academic experimental investigation of the concept... 

CN ions. Anodic dissolution of silver electrode in cyanide solutions and also the behavior of Ag at potentials preceding dissolution have been studied applying electrode impedance measurements [381]. At potentials of anodic dissolution, the process was represented by the equivalent circuit with two parallel branches. 

Guidelli and associates showed (236) by electrode impedance measurements that acrylonitrile is coadsorbed, into an adsorbate layer of these cations,... 

Dolle M, Orsini F, Gozdz AS, Tarascon JM (2001) Development of reliable three-electrode impedance measurements in plastic Li-ion batteries. J Electrochem Soc 148 A851-7... 

Although the dissolution process results in the formation of a porous structure, electrode impedance measurements [72, 73] have shown that the etching process is not limited by mass transport, even for thick porous silicon layers [74]. Figure 12 shows a plot of potential as a function of time during pore formation in p-Si(lOO),... 

Roth, B.J. 1989. Interpretation of skeletal muscle four-electrode impedance measurements using spatial and temporal frequency-dependent conductivities. Med. Biol. Eng. Comput. 27 491-495. 

M. Dolle, F. Orsini, A. Gozdz, and S. Tarascon [2001] Development of Reliable Three-Electrode Impedance Measurements in Plastic Li-Ion Batteries, J. Electrochem. Soc., 148, A851-A857. 

Kuhn and Scherer [39], on the other hand, applied the dissociative model to evaluate single electrode impedance measurements. For low current densities, they considered the following pathway ... 

Conductivities of muscle and blood (table 1) were then used with the tissue volume data to produce a conductivity image with 35 x 35 x 1 resolution for FDM calculation. The conductivity image was generated for each of the 60 time-steps of dynamics and 3 frequencies. FDM calculation to find electrode-to-electrode impedance measurement value was performed for each time-step and frequency. 

Results were obtained for chemicals with phosphono and/or carboxyl groups various types were used in order to replace very effective but toxic inhibitors, and to decrease the phosphorus content in the inhibitor. Positive correlation was found between the number of substituents with negative charge, especially with phosphono groups. As these compounds are derivatives of natural amino acids, their catabolism results in nontoxic chemicals, and the ratio of the phosphorus is lower than in the chemicals used as industrial corrosion inhibitors. Electrode impedance measurements pointed to the importance of time in the formation of a protective layer on the metal surface. 

Stromatt, R.W. (1963) Studies on the ectroreduction of uranyl(VI) in molten equimolar KCl-NaCl by chronopoten-tiometric and electrode impedance measurements. J. Electrochem. Soc, 110(12), 1277-1282. 

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