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Temperature effects in the electrochemical behaviour of cycled lead electrodes in HCl solutions

✍ Scribed by R.G. Barradas; S. Fletcher

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
525 KB
Volume
22
Category
Article
ISSN
0013-4686

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✦ Synopsis

The electrochemical behaviour of cycled lead electrodes has been investigated in HCI soiutions iu the temperature range -6" to 30Β°C. Because of the low ionic strength of solution below -0.8 M, and the associated ir drop problem, solutions stronger than 1.0 M were principally considered. In weaker solutions (0.148 M) only derived current functions were analysed, whilst ail potentiai-dependent parameters were rejected. Results are reported for both stationary and rotating disc electrodes.

Because of the chemical dissolution of the surface layer of PbCi, formed on anodic scan, measurements were confined to time-scales of < 1 s. By applying these strict criteria, the overall reaction scheme was deduced. In particular, the kinetics of passivation were found to involve the three-dimensional

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