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A theory of the capacity of strongly relaxing electrochemical systems. The lead—acid example

✍ Scribed by W. Kappus; U. Hullmeine

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
276 KB
Volume
26
Category
Article
ISSN
0013-4686

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✦ Synopsis

The discharge capacity of technical battery electrodes generally shows a dependence on the discharge current density. This is due partly to non relaxing processes like passivation of the internal electrode surface by layers of the discharge product which show a morphology dependent on the discharge current density; partly to relaxing exhaustion process like acid depletion in the pores of lead electrodes.

The discharge capacity for any current profile is derived using an approach both for non relaxing and relaxing discharge processes. This approach is successfully applied for the description of the capacity obtained on repeated discharge of Pb and PbO, electrodes with intermittent rest periods as a function of current density.

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