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Potentiodynamic reactivation of a passivated lead negative electrode in sulphuric acid solution

โœ Scribed by Yoshifumi Yamamoto; Masao Matsuoka; Mamoru Kimoto; Masahir Uemura; Chiaki Iwakura

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
419 KB
Volume
41
Category
Article
ISSN
0013-4686

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โœฆ Synopsis

When a fully charged lead negative electrode stood for one month in 1.0 M H,SO, solution at a temperature of 298.15K, it was passivated through so-called "sulfation" as indicated by a decrease in the redox peak currents on cyclic voltammograms.

As a method of reactivating the passivated lead negative electrode, we proposed the electrochemical redox potentiodynamic method in the potential range from 0.6 V vs. she to the potential of oxygen evolution at a positive electrode. It is recognized that the activity of the passivated lead negative electrode recovered completely after several cycles of such electrochemical treatment.

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