Effect of ionic strength on the passivation of zinc electrodes in KOH solutions
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Times to passivation have been measured for zinc electrodes in KOH-KF solutions at room temperature. A linear relationship betweeni andt−1/2 was obtained. The intercept of these lines is interpreted to be a limiting current density. This limiting current density reaches a maximum in solutions 5M in KOH. Beyond this concentration the limiting current density decreases. This phenomenon is explained in terms of the loss of unbound water as the ionic strength of the solution increases.
KeywordsZinc Physical Chemistry Linear Relationship Ionic Strength Solution Increase
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- M. Eisenberg, H. F. Bauman and D. M. Brettner,J. Electrochem. Soc.,108 (1961) 909.Google Scholar
- N. A. Hampson, M. J. Tarbox, J. T. Lilley and J. P. G. Farr,Electrochem. Technol,2 (1964) 309.Google Scholar
- T. P. Dirkse,J. Appl. Electrochem.,1 (1971) 27.Google Scholar
- J. P. G. Farr and N. A. Hampson,Trans. Faraday Soc.,62 (1966) 3493.Google Scholar
- J. P. G. Farr and N. A. Hampson,J. Electroanal. Chem.,13 (1967) 433.Google Scholar
- B. E. Conway, ‘Modern Aspects of Electrochemistry’, Vol. 3, Ed. J. O'M. Bockris and B. E. Conway, Plenum Publishing Corp., New York (1964) p. 43.Google Scholar
- T. Ackerman,Disc. Faraday Soc.,24 (1957) 180.Google Scholar
- M. Huggins,J. Am. Chem. Soc.,53 (1931) 3190.Google Scholar
- M. Eigen and L. De Maeyer,Proc. Roy. Soc.,247 (1958) 505.Google Scholar
- D. A. Lown and H. R. Thirsk,Trans. Faraday Soc.,7 (1971) 132.Google Scholar