Granulation is the key link of artificial graphite processing, granulation is divided into pyrolysis process and ball milling PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC screening process. Difference: At present, each enterprise has little difference in particle size screening, mainly reflected in the details and costs.
Small particles have large specific surface area, more channels and shorter paths for lithium ion migration, good magnification performance, high compaction density and large capacity. How to take into account the advantages of large particles and small particles, and achieve high capacity and high rate PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC process, the answer is to take secondary granulation. Using small particle petroleum coke, needle coke and other base materials, by adding coating materials and additives, under the condition of high temperature stirring, by controlling the proportion of materials, temperature curve and stirring speed, small particle size of the base material can be secondary granulated to obtain larger particle size products.
PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC products compared with the same particle size products, can effectively improve the material liquid retention performance and reduce the expansion coefficient of the material (there is a cavity between small particles and small particles), shorten the diffusion path of lithium ions, improve the rate performance, At the same time, it can also improve the high and low temperature properties and cycle performance of the material.
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