Preparation method of composite modified lithium metal soft package battery
A soft-pack battery and composite modification technology, which is applied in the manufacture of lithium batteries, electrolyte batteries, and battery electrodes, can solve problems such as complex chemical synthesis processes, chemical instability of lithium metal negative electrodes, and harsh environmental conditions, and achieve low control requirements , The modification method is simple and easy, and the effect of simple disassembly
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[0038]Example 1
[0039]A method for preparing a composite modified lithium metal soft pack battery includes the following steps:
[0040]1) Making the positive electrode sheet: Disperse 67.06g of high nickel ternary positive electrode material, 2g of superconducting carbon black, 0.84g of PVDF in 39.2g of N-methylpyrrolidone, and coat it on the positive electrode aluminum foil current collector after stirring. After drying at ℃, roll it into sheets and cut them; weld the cut positive sheet and aluminum tabs together, and fix them with insulating tape;
[0041]2) Baking the positive electrode sheet: Put the obtained positive electrode sheet in a vacuum oven for drying, and bake it at 90°C for 24 hours, continue to vacuum, and control the moisture content of the positive electrode sheet ≤200ppm;
[0042]3) Making the negative electrode sheet: Lay a microporous copper foil with a diameter of 25μm and a thickness of 9μm on both sides of the lithium belt, and weld the nickel tab to one end of the m...
Example Embodiment
[0052]Example 2
[0053]A method for preparing a composite modified lithium metal soft pack battery includes the following steps:
[0054]1) Making the positive electrode sheet: Disperse 80g of high nickel ternary positive electrode material, 2g of superconducting carbon black, and 2g of PVDF in 42g of N-methylpyrrolidone, stir it evenly and coat it on the positive electrode aluminum foil current collector, and dry it at 80℃ , Roll into a sheet, and cut; weld the cut positive sheet and aluminum tab together, and fix it with insulating tape;
[0055]2) Baking the positive electrode sheet: Put the obtained positive electrode sheet in a vacuum oven for drying, and bake it at 90°C for 24 hours, continue to vacuum, and control the moisture content of the positive sheet ≤200ppm;
[0056]3) Making the negative electrode sheet: Spread the microporous copper foil with a diameter of 10μm and a thickness of 5μm on both sides of the lithium tape, and weld the nickel tab to one end of the microporous copper...
Example Embodiment
[0061]Example 3
[0062]On the basis of Example 1, the carbon-coated membrane is a nano-scale carbon powder coated PET film.
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