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Positive and negative electrode material screening solution

Classification of positive and negative electrode materialsPositive electrode: lithium cobalt oxide, lithium iron phosphate, lithium manganese oxide, ternary material (nickel cobal

Classification of positive and negative electrode materials

Positive electrode: lithium cobalt oxide, lithium iron phosphate, lithium manganese oxide, ternary material (nickel cobalt manganese oxide)

Negative electrode: carbon (artificial graphite, natural graphite, mesophase carbon microspheres), lithium titanate


The process flow of positive and negative electrode materialsPositive electrode: Taking lithium cobalt oxide as an example; using cobalt oxide, conductive agent (acetylene black), and adhesive as raw materials, crushing (jet mill) - weighing raw materials in proportion (weighing meter) - mixing (mixer) - sintering (sintering furnace) - crushing (jet mill) - screening (ultrasonic) - iron removal (permanent magnetic iron remover) - packaging (including vacuum feeding or vibration feeding and dust removal equipment)


Negative electrode: Taking natural graphite as an example: graphite - crushing - mixing - high temperature degreasing (steel belt furnace) - chemical purification - drying - screening - mixing - coating carbonization - demagnetization (magnetic separator) - screening (ultrasonic) - packaging



Screening problem

1. Output: Due to process factors, some manufacturers have poor material fluidity, high viscosity and low output;

2. Maintenance rate: The ultrasonic probe, line and power supply will have maintenance points every six months or one year;

3. Screen life: Some manufacturers report that the screen has a short service life;

4. Pollutants: Iron and copper metal objects will contaminate the raw materials and cause the battery capacity to decrease;

5. Oversize particle size: Materials exceeding the mesh aperture appear in the screened material, increasing the probability of diaphragm damage