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Kinetics of the formation process of PbO2 on lead-antimony electrodes

✍ Scribed by Guo-Lin Wei; Jia-Rong Wang

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
403 KB
Volume
52
Category
Article
ISSN
0378-7753

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✦ Synopsis

The kinetics of the formation process of PbOa on Pb-lwt.%Sb and Pb-7wt.%Sb electrodes, together with the influence of antimony on this process, are studied with potential-step and a.c. impedance methods. Relationships between the current density and time, and between the capacitance and time, are investigated. The oxidation current of the lead substrate is considered. Results show that the formation process of PbOz on lead-antimony electrodes follows a two-dimensional instantaneous nucleation/growth process. Antimony enhances the formation of Pb02 nuclei, but inhibits their growth.

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