Chemistry: electrical and wave energy – Processes and products
Patent
1977-09-09
1979-03-27
Tung, T.
Chemistry: electrical and wave energy
Processes and products
204195R, 204 14R, G01N 2746
Patent
active
041464370
ABSTRACT:
A method is provided for evaluating an unknown electrolytic system comprising an electrolytic solution and electrodes for electrodeposition of metal with respect to determining the performance characteristics of the electrolytic solution, detection of impurities and additives in the electrolytic solution, estimation of the current efficiency characteristics of the system, or determining the performance characteristics of an electrode. An electrolytic circuit is established comprising a sample of the electrolytic solution for the system, two electrodes immersed in the solution and spaced from one another therein, and a variable and reversible voltage source having its output terminals respectively connected to the electrodes. A predetermined initial voltage is applied to one of the electrodes constituting a working electrode. Thereafter, the voltage is varied in the negative direction until a predetermined cathodic current or predetermined maximum voltage sufficient to cause a cathodic reaction is attained at the working electrode. The direction of the voltage change is then reversed and the voltage is varied in the positive direction until a predetermined minimum voltage or a predetermined minimum current is attained at the working electrode. This process is repeated through a plurality of cycles and the current obtained is recorded as a function of voltage for a selected cycle. The performance characteristics of the sample solution, the presence of an impurity or additive, the current efficiency, or the working electrode characteristics are determined according to the recorded relationship between current and voltage. This method is useful in the control of electrodeposition processes since it not only provides a basis for evaluating electrolytic solutions and electrodes but further constitutes an analytical tool adapted for determining compositional adjustments necessary for optimum cell performance.
REFERENCES:
patent: 3925168 (1975-12-01), Costas
Adams, "Electrochemistry at Solid Electrodes", New York, Marcel Dekker, Inc., 1969, pp. 122-159.
Willard et al., "Instrumental Methods of Analysis", Med., 1974, pp. 652 & 653.
Mantell et al., "Transactions of the Metallurgical Society of AIME", vol. 236, May 1966, pp. 718-725.
Vennesland et al., "Acta Chemica Scandinavica", vol. 27, 1973, No. 3, pp. 846-850.
The Curators of the University of Missouri
Tung T.
LandOfFree
Method for evaluating a system for electrodeposition of metals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for evaluating a system for electrodeposition of metals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for evaluating a system for electrodeposition of metals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1820786