The Impact of the Content of Lead Oxide on the Porosity and Volume of the Pores, Paste and Active Mass of the Positive Electrodes-Pasted Flat Plates of Lead-Acid Batteries

Abstract

Porosity and the volume of the pores of active mass of lead-acid layout battery are one of the key factors that determine the capacity and their lifetime. Increase of pore diameter enables flow of sufficient quantitiy of electrolyte into the bulk active mass and, as a consequence, enables its maximum conversion. Smaller diameter of the pores in the same volume of active mass provides a larger surface area which has again a consenquence of higher capacity for the ephemeral dischargings, but also faster filling in of the pores with the compenents of electrochemical reaction, which in turn reduces their lifespan. The aim of this work was to consider the impact of different content of the lead oxide in lead powder as the main component in the production of these batteries regardings this phenomenon.