Red lead (Pb₃O₄) Red lead finds application in lead-acid batteries due to its beneficial properties. Let me explain: Formation Process: During the formation of lead-acid batteries, red lead reacts with sulfuric acid to form lead dioxide (PbO₂). This reaction generates smaller crystals of β-PbO₂, which enables efficient transformation of the entire active substance. Consequently, using red lead can save time in the formation process and improve the electric energy process of the plate Conductivity: Red lead is more conductive than other forms of lead oxide. By adding red lead to the PbO formed during battery production, manufacturers enhance the overall conductivity of the battery plates In summary, red lead contributes to the performance and efficiency of lead-acid batteries by facilitating the formation process and enhancing conductivity.
Mohan Babu sir wtever you have mentioned is right, it needs further explanations too
Mohan Babu, the very first sentence under the Formation Process heading is incorrect.In fact red lead is not reacting with sulfuric acid to form lead dioxide (PbO2). Red Lead is more stable and is a higher form of oxide, it is less affected by sulfuric acid. Lead Oxide ( PbO) is the first active material that will turn into PbO2. Sulfuric acid works as an oxygen transporter released from negative plates active material reduction (PbO to Pb). In fact the addition of Red Lead in positive paste delays the formation of PbO2 therefore you need to perform several charge/discharge cycles to achieve optimum power storage capacity. Under the second heading ' Conductive' is also incorrect and disinformation. Red Lead doesn't improve the internal conductivity but internal conductivity ( Ionic Mobility) is more important for battery performance and higher numbers of cycles.
Surface area also increase too...
President/CTO at Battery Technology Center Inc.
3moBut maybe these will prevent growth of good crystals of 3BS and 4BS, which give mechanical strength, better porosity and better conduc tivity to PAM precursor cured paste. To get the strength, porosity and better conductivity, use 4BS seed crystals such as my PCA. Seeds also speed up curing whereas red lead seems to inhibit curing. In a factory test, a ball mill oxide with red lead took over 44 hours to cure down to 2% free Pb. A competitor 4BS seed took 14 hr to cure to less than 1% Pb and PCA took less than 18 hrs to reach 0.1%Pb. on subsequent deep cycle WB 133 testing, red lead below 80% in about 1200 cycles, competitor below80% in about 1500 cycles, and PCA capacity hovered in the 80 to 90 capacity range to more than 2600 cycles when the testers were needed for another test. Red lead may help ease formation, but there are other ways to do this. I will soon publish a paper that will say we should get back to basics and not do anything that will be deleterious to the battery in any subsequent processing step. This article may grow to be a universal practical book on technology and practices that are not addressed by Pavlov, Bode, Vinal, Hehner/Orsino and others. Feel free to repost this,giving credit to BTC