The objective of this work is to improve the performance of the positive electrode of lead-acid battery.
The use of the additive in the positive paste is to increase the capacity and cycle life of the positive active
material. Mineral porous additives, dispersed uniformly in the PAM, may act as acid reservoirs and favor
the ionic diffusion. The results show that the addition of mineral additive in the paste before oxidation
influences the composition and the crystal size of the PAM after oxidation. We observe a remarkable
improvement of the discharge capacity of the PAM for an amount of additive ranging between 1 and 5%.
Nano-sized particles of PbO2 with amorphous character are obtained. XRD, TG and DSC, SEM, and galvanostatic
discharge were used as techniques of investigation.