M. Saakes et Wh. Mulder, INVESTIGATIONS OF THE NEGATIVE PLATE OF LEAD ACID CELLS .3. MODEL-CALCULATIONS OF THE IMPEDANCE OF SELF-SIMILAR POROUS-ELECTRODES, Journal of power sources, 50(1-2), 1994, pp. 89-96
In this paper a model for the calculation of the admittance (reciproca
l impedance) of a porous metal electrode is derived, under anodic cons
tant-current conditions, during precipitation of an insoluble salt at
the metal/electrolyte interface. An example of the discharge, at low c
urrent density, of the negative plate in a lead/sulphuric acid battery
during which lead sulphate is formed. The discussion is based on the
assumption that porosity has a self-similar fractal character. The imp
edance of fractal electrodes will be discussed in terms of geometrical
and physical parameters.