A Plate-positive is a molten metal element containing active mass (lead dioxide).
Positive plates need much more time to form than negatives. The reason for this is the dielectric behavior of the cured positive paste. Oxidation of the bivalent lead compounds in the paste and formation of the PbO2-positive active mass passes through a number of chemical reactions, some of which proceed at a low rate, which retards the technological process of formation of the positive plate. In an attempt to accelerate the formation process, additives to the positive paste have been looked for, which are characterized by electroconductive properties and stability in sulfuric acid. These additives create an electroconductive network in the paste and the process of oxidation proceeds simultaneously within a large paste volume, thus accelerating plate formation.
« Back to Glossary Index