Secondary granulation: small particles have large specific surface area, more channels for lithium ion migration, shorter paths, good magnification performance, high compaction density and large capacity of large particles. Compared with the product of the same particle size, the product of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC can effectively improve the liquid retention performance of the material and reduce the expansion coefficient of the material (there are pits between small particles and small particles), shorten the diffusion path of lithium ions, and improve the magnulation performance. At the same time, it can also improve the high and low temperature performance and cycle performance of the material.
How to take into account the advantages of large particles and small particles, while achieving high capacity and high magnification, the answer is to adopt secondary granulation for PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC magnetic removal. Using small particle petroleum coke, needle coke and other substrates, by adding coating materials and additives, under the condition of high temperature stirring, by controlling the proportion of materials, heating curve and stirring speed, the small particle size of the substrate can be secondary granulated to obtain larger particle size products.
Difference: The secondary granulation process has high barriers, many types of coating materials and additives, and is prone to uneven coating or coating falling off and other problems, or poor coating effect, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC removal of iron is an important process of high-end artificial graphite.
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