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Dingsheng Power Supply Strive to Be a Battery Additive Brand Supplier Trusted by Customers
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2024
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02
Effect of additives on batteries
In the positive lead paste, relatively few additives are used, such as conductive additives graphite, etc., which generally have little impact on the processability of the combined paste coated plate. However, some also have a greater impact
In the positive lead paste, relatively few additives are used, such as conductive additives graphite, etc., which generally have little impact on the processability of the combined paste coated plate. However, some also have a greater impact, such as PTFE emulsion and other pole plate enhancers, increase the lead paste viscosity is greater, the filler coating has a certain impact, so when adding, consider the feasibility of coating the plate. Adding more fibers or longer fibers will hang on the scraper wire when coating the plate, which will have a certain effect on coating the plate, so it is necessary to choose the appropriate length of fibers and the appropriate amount of joining, and it is necessary to clean up the scraper wire on a regular basis.
In the negative lead paste, there are two common organic additives, one is humic acid, the other is lignosulfonate.
acid, and the other is sodium lignosulfonate. The addition of the two substances has a great difference in processability. When the lead powder containing lignin additives is added to the water, the lead paste rapidly thins and forms a thin porridge, and after acid is added gradually, it thickens faster and forms a lead paste that meets the requirements. This is determined by the nature of lignin. Add humic acid additive lead powder, add water lead paste will not become very thin, add acid will become the required lead paste. Most people believe that lead paste with humic acid additive has better filling processability than lead paste with lignin additive.
It is generally believed that the initial performance of the negative electrode with lignin additive, such as the initial capacity of the battery, the low-temperature discharge performance is better, and the charging acceptance performance is worse. The solubility of lignin is high, especially under high temperature condition and acidity reduction, after lignin is dissolved, the original effect will be lost. Skyline lignin's negative plate is prone to the phenomenon of sticking when the pole plate is transformed into a charging plate, i.e., a negative plate is stuck to another negative plate face to face, resulting in an increase in scrap. Adding humic acid lead paste coated plate process performance is good, the adverse effect on the charging acceptance ability is small; there will be no sticky plate phenomenon in the process of formation, the initial performance of the battery is not as good as the initial performance of lignin negative plate, but the solubility of humic acid is low, it can be retained in the negative plate for a longer time, so that the negative plate has a longer life. The composition of other negative additives has little effect on the processability of the team.
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2024-02-20
2024-02-20
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