Add 5% to 10% of the total thickening agent solution, then stir and disperse, the time is 30 to 40 minutes, and at the end of the time 1/2, scrape the slurry on the mixing paddle and the barrel, and test the slurry viscosity of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC magnetic removal of iron. Reach the viscosity range requirements to proceed to the next step; Binder addition: Add binder SBR, stir and disperse, the time is 10~30 minutes;
Vacuum defoamization: In the state of low speed stirring, the barrel body is vacuumed, the vacuum degree is: 0.09 ~-0.IMPa, the time is 15~30 minutes, that is, the graphite negative electrode slurry prepared by PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC. Graphite is one or more mixtures of artificial graphite, natural graphite, hard carbon and mesophase carbon microsphere materials. The conductive agent is one or more mixtures of conductive carbon black, conductive graphite, carbon nanotubes, carbon fiber, and graphene.
The mass ratio of each component of graphite, conductive agent, thickener and binder is (90-97) : (1-4) : (1-5) : (1-3), and the solvent is 80%~120% of the total amount of the above components. The iron removal equipment is PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC, and the slurry temperature is controlled by using the stirring bucket to pass the corresponding temperature of constant temperature circulating water.
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