The influence of different factors on the porous structure of the positive electrode in lead-acid batteries

Geometric structure measurements of positive electrodes have been determined by measuring cumulative pore volume, pore size distribution, porosity, pore specific surface area and BET specific surface area. The influence of technological parameters such as concentration of SO₄²⁻ ions in the paste, the temperature of the paste and the quality of oxides on the structure of porous positive electrode have been studied. The relation between BET specific surface area and the electrical capacity of the positive electrode is shown and interpreted.