A kind of mixing and slurrying method of positive electrode material
A positive electrode material and pulping technology, which is applied in the field of positive electrode material mixing and pulping, can solve the problems of poor slurry coating performance, poor slurry stability, and influence on coating, and achieve simple mixing process and improved stability , increase the effect of stability
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Embodiment 1
[0028] 1) Add PVDF to NMP, stir for 2 hours, then add conductive carbon black, stir for 4 hours, add lithium cobaltate A with an average particle size of 80nm, stir for 8 hours, and obtain the first slurry, in which lithium cobaltate, PVDF and conductive The ratio of carbon black is 100:6:4, and the solid content is 62%;
[0029] 2) Add PVDF to NMP, stir for 2 hours, then add conductive carbon black, stir for 4 hours, add lithium cobaltate B with an average particle size of 1.2 μm, stir for 6 hours, and obtain the second slurry, in which lithium cobaltate, PVDF and The ratio of conductive carbon black is 100:6:4, and the solid content is 60%;
[0030] 3) Add PVDF to NMP, stir for 2 hours, then add conductive carbon black, stir for 4 hours, add lithium nickel manganese cobaltate with an average particle size of 2 μm, stir for 4 hours to obtain the third slurry, in which lithium nickel manganese cobaltate, The ratio of PVDF and conductive carbon black is 100:6:4, and the solid ...
Embodiment 2
[0033] 1) Add PVDF to NMP, stir for 2 hours, then add conductive carbon black, stir for 4 hours, add lithium cobaltate A with an average particle size of 200nm, stir for 8 hours, and obtain the first slurry, in which lithium cobaltate, PVDF and conductive The ratio of carbon black is 100:7:5, and the solid content is 65%;
[0034] 2) Add PVDF to NMP, stir for 2 hours, then add conductive carbon black, stir for 4 hours, add lithium cobaltate B with an average particle size of 1.5 μm, stir for 6 hours, and obtain the second slurry, in which lithium cobaltate, PVDF and The ratio of conductive carbon black is 100:7:5, and the solid content is 62%;
[0035] 3) Add PVDF to NMP, stir for 2 hours, then add conductive carbon black, stir for 4 hours, add lithium nickel manganese cobaltate with an average particle size of 2.5 μm, stir for 4 hours to obtain the third slurry, in which lithium nickel manganese cobaltate , the ratio of PVDF and conductive carbon black is 100:7:5, and the so...
Embodiment 3
[0038] 1) Add PVDF to NMP, stir for 2 hours, then add conductive carbon black, stir for 4 hours, add lithium cobaltate A with an average particle size of 80nm, stir for 8 hours, and obtain the first slurry, in which lithium cobaltate, PVDF and conductive The ratio of carbon black is 100:6:5, and the solid content is 63%;
[0039] 2) Add PVDF to NMP, stir for 2 hours, then add conductive carbon black, stir for 4 hours, add lithium cobaltate B with an average particle size of 1.4 μm, stir for 6 hours, and obtain the second slurry, in which lithium cobaltate, PVDF and The ratio of conductive carbon black is 100:6:5, and the solid content is 61%;
[0040] 3) Add PVDF to NMP, stir for 2 hours, then add conductive carbon black, stir for 4 hours, add lithium nickel manganese cobaltate with an average particle size of 2.2 μm, stir for 4 hours to obtain the third slurry, in which lithium nickel manganese cobaltate , the ratio of PVDF and conductive carbon black is 100:6:5, and the sol...
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