A kind of lithium ion battery and preparation method thereof
A lithium-ion battery and battery technology, applied in the manufacture of electrolyte batteries, battery electrodes, secondary batteries, etc., can solve the problems of increasing the internal resistance of batteries
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0028] A preparation method for a lithium ion battery, comprising the following steps,
[0029] S01, preparing a mixed solution. Dissolving the nano-zeolite and the binder in an organic solvent and pure water to obtain a mixed solution; wherein, each component includes 88% to 95% of the nano-zeolite and 5% to 12% of the binder by mass percentage;
[0030] S02, prepare slurry. The mixed solution is made into a slurry with a viscosity of 300cp-4000cp through a high-speed shear disperser or a sand mill disperser;
[0031] S03, preparing a coating. Combining the above slurry on the upper surface of the negative electrode sheet by a coating method to form a coating layer, drying the coating layer to obtain a coating;
[0032] S04, battery assembly. The coated negative electrode sheet and positive electrode sheet, separator and electrolyte are assembled into a battery.
[0033] In a preferred embodiment, the active material of the positive plate of the lithium ion battery is on...
Embodiment 1
[0038] oil film production
[0039] Step S11, preparing a mixed solution.
[0040] Use N-methylpyrrolidone (NMP) as solvent to dissolve polyvinylidene fluoride and 92% ZSM-5 type nano zeolite material in mass percent, ZSM-5 type nano zeolite average aperture is 100nm; Particle diameter is 300 -700nm, the specific surface area is 200m 2 / g to obtain a mixed solution.
[0041] Step S12, preparing slurry.
[0042] The mixed solution in S11 was subjected to high-speed shear dispersion at 2800rpm to make a slurry with a viscosity of about 1400cp.
[0043] Step S13, preparing a coating.
[0044] The slurry is compounded on the surface of the negative electrode sheet with copper foil as the current collector and mesocarbon microspheres as the active material by extrusion coating to obtain a coating layer with a thickness of 3 μm. After drying, the coated layer is obtained. layers of negative electrodes.
[0045] Step S14, assembling the battery.
[0046] The above-mentioned ne...
Embodiment 2
[0048] Water-based film production
[0049] Step S21, preparing a mixed solution.
[0050] Use pure water as solvent to be the binding agent CMC sodium carboxymethyl cellulose of 3%, 5% styrene-butadiene rubber SBR and 92% ZSM-5 type nano zeolite material with solid mass percent; ZSM-5 type nano zeolite average pore diameter 120nm; particle size 200-600nm, specific surface area 150m 2 / g.
[0051] Step S22, prepare slurry.
[0052] Disperse the mixed solution in S21 by sand milling to make a slurry with a viscosity of about 800cp.
[0053] Step S23, preparing a coating.
[0054] The slurry is compounded on the surface of the negative electrode sheet with copper foil as the current collector and mesocarbon microspheres as the active material by extrusion coating to obtain a coating layer with a thickness of 3 μm. After drying, the coated layer is obtained. layers of negative electrodes.
[0055] Step S24, assembling the battery.
[0056] The above-mentioned negative elec...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More