Preparation method of lithium ion battery solid electrolyte interphase, and lithium ion battery
A solid electrolyte membrane, lithium ion battery technology, applied in non-aqueous electrolyte storage batteries, electrolyte storage battery manufacturing, secondary batteries, etc. Discharge efficiency and other issues, to achieve the effect of good transmission of lithium ions and insulation of electronics, good cycle performance and storage performance, and improved first charge and discharge efficiency
Inactive Publication Date: 2018-03-06
OPTIMUM BATTERY CO LTD
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Disclosed is a preparation method of a lithium ion battery solid electrolyte interphase. The preparation method comprises the following steps of 1, preparation of negative electrode uniform paste: weighing graphite, a conductive agent and a binder based on a certain mass ratio, then adding deionized water, and performing dispersion on the negative electrode uniform paste by a mechanical stirring disperser; 2, preparation of an organic solution electroplating tank: weighing a lithium salt, an organic solvent and an additive based on a certain mass ratio, and preparing an organic solvent electrolytic tank; 3, performing screening on the negative electrode uniform paste obtained in the step 1 and the coating the surface of a current collector copper foil with the screened negative electrode uniform paste, and then performing drying to prepare a primary negative electrode plate; and 4, enabling the primary negative electrode plate obtained in the step 3 to be immersed into the organic solution electroplating tank obtained in the step 2, and electroplating the primary negative electrode plate with a layer of organic film at a low current, and finally taking out and performing drying. The invention also provides the lithium ion battery, wherein the lithium ion battery is prepared by the working procedures of rolling, plate making, assembling, electrolyte injecting and sealing on thenegative electrode plate of the solid electrolyte interphase prepared by the steps 1-4, and a diaphragm, a positive electrode plate and an electrolyte.
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Property | Measurement | Unit |
Viscosity | 600.0 ~ 1500.0 | mPa·s |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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