Lithium ion battery carbon-based flexible integrated electrode and preparation method thereof
A lithium-ion battery, carbon-based flexible technology, used in battery electrodes, non-aqueous electrolyte battery electrodes, electrode manufacturing, etc., can solve problems such as increased contact resistance, reduce contact resistance, reduce mass and volume ratio, and increase volume energy. The effect of density
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Embodiment 1
[0038] Select the commercialized Celgard 2400 as the polymer diaphragm, in the plasma cleaning machine, use O 2 One side was hydrophilized by plasma for 60s, and the other side was covered with PET film. Mix commercial iron phosphate powder, water-based single-wall carbon nanotube slurry, conductive carbon black, and binder sodium alginate in a mass ratio of 90:1.5:3.5:5 to make a uniform active electrode slurry . Among them, the quality of the single-walled carbon nanotubes is calculated according to the solid content of the carbon nanotube slurry, and the feeding sequence is the aqueous carbon nanotube slurry, sodium alginate, lithium iron phosphate powder, and conductive carbon black, and the stirring time is 8 hours. The obtained active electrode slurry was evenly scraped on the hydrophilized side of the separator, and dried in vacuum for 12 hours. Take the water-based single-walled carbon nanotube slurry with a solid content of 30 mg, add deionized water to 90 mL, stir ...
Embodiment 2
[0042] Select the commercialized Celgard 2400 as the polymer diaphragm, in the plasma cleaning machine, use O 2 One side was hydrophilized by plasma for 60s, and the other side was covered with PET film. Mix commercial lithium titanate powder, aqueous single-wall carbon nanotube slurry, conductive carbon black, and binder sodium alginate at a mass ratio of 90:1.5:3.5:5 to make a uniform active electrode slurry . Among them, the quality of the single-walled carbon nanotubes is calculated according to the solid content of the carbon nanotube slurry, and the feeding sequence is the aqueous carbon nanotube slurry, sodium alginate, lithium titanate powder, and conductive carbon black, and the stirring time is 8 hours. The obtained active electrode slurry was evenly scraped on the hydrophilized side of the separator, and dried in vacuum for 12 hours. Take the water-based single-walled carbon nanotube slurry with a solid content of 30 mg, add deionized water to 90 mL, stir and disp...
Embodiment 3
[0051] Select the commercialized Celgard 2400 as the polymer diaphragm, in the plasma cleaning machine, use O 2 One side was hydrophilized by plasma for 60s, and the other side was covered with PET film. Mix commercial silicon carbon powder, water-based graphene slurry, conductive carbon black, and binder sodium alginate in a mass ratio of 90:2.5:2.5:5 to make a uniform active electrode slurry. Wherein, the quality of graphene is calculated according to the solid content of graphene slurry. The obtained active electrode slurry was evenly scraped on the hydrophilized side of the separator, and dried in vacuum for 12 hours. Take the water-based graphene slurry with a solid content of 50mg, add deionized water to 90mL, stir and disperse for 0.5h, and ultrasonically disperse for 1h to obtain a uniform graphene dispersion, which is centrifugally sprayed on the active material surface of the above-mentioned diaphragm electrode On top, the current collector layer of the electrode i...
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