ADDITIVE FOR PRODUCING THE POSITIVE ACTIVE MATERIAL FOR LEAD STORAGE BATTERIES, A METHOD FOR THE PRODUCTION THEREOF AND ITS USE

摘要

The invention relates to an additive for producing the positive active material for lead storage batteries based on fine-particle 4-basic lead sulfate. The additive contains a 4-basic lead sulfate having an average particle size less than approximately 3 µm, and contains fine-particle silicic acid for preventing the agglomeration of the particles of the 4-basic lead sulfate. This additive, during ripening, ensures the formation of the structure of a 4-basic lead sulfate crystal with a very narrow range of crystal sizes and a very homogenous distribution. The subsequent electrochemical formation into lead dioxide leads to the production of particularly powerful lead storage batteries. The invention also relates to a method for producing the inventive additive and to the advantageous use thereof in the positive material for ripening and drying separated and unseparated plates during the production of lead storage batteries.