Method for manufacturing and coating anode slurry of lithium iron phosphate battery
A technology of lithium iron phosphate battery and positive electrode slurry, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of difficult adhesion, easy falling off, and cracking of lithium iron phosphate batteries, and achieves good adhesion and dispersion. The effect of uniform and improved adhesion
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Embodiment 1
[0036] 1. Follow the steps below for slurry preparation
[0037] According to the mass ratio: 93% lithium iron phosphate: 3% conductive carbon black (SP): 1% conductive graphite (KS6): 3% Solef5130 Weigh each raw material; first put each raw material into a 120°C vacuum oven to dry for 4 hours, the vacuum is -0.1MPa; then the binder (solef PVDF 5130 from the United States) and the organic solvent are stirred in vacuum for 4 hours, and the vacuum is: -0.1MPa; then conductive carbon black (SP) and conductive graphite ( KS6) Two mixed conductive agents are added to the adhesive, stirred in vacuum for 1 hour, and the vacuum degree is: -0.1MPa; then lithium iron phosphate is added to the conductive adhesive, vacuumed to -0.1MPa, and filled with high-purity gas , the vacuum degree was maintained at -0.08MPa, and stirred for 6 hours; finally, the slurry was filtered with a 120 sieve.
[0038] The organic solvent of the present embodiment is ethanol, and its weight is 8 times of the ...
Embodiment 2
[0043] Similar to Example 1, the difference is that the slurry is prepared according to the mass ratio: 94% lithium iron phosphate: 2% SP: 1% VGCF: 3% Solef5130.
[0044] Processing method is as embodiment 1.
Embodiment 3
[0046] Similar to Example 1, the difference is that lithium iron phosphate is added to the conductive adhesive, vacuumed to -0.1MPa, filled with high-purity gas, and kept at a vacuum of -0.06MPa, and stirred for 7 hours.
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