A high-safety high-energy-density lithium-ion battery
A lithium-ion battery, high energy density technology, applied in the field of lithium-ion batteries, can solve the problems of not being able to sense the temperature change of lithium-ion batteries in time, weak thermal runaway control, etc., to improve safety, increase energy density, and achieve the effect of simple operation
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Embodiment 1
[0024] The preparation of stabilized lithium metal powder with positive temperature coefficient effect comprises the following steps:
[0025] a) Put a 3*3cm lithium metal sheet into a reactor with a stirrer at room temperature under a dry argon flow atmosphere, add 1kg of mineral oil, heat to 200°C, and stir at 300rpm to obtain molten lithium metal;
[0026] b) stirring the molten lithium metal obtained in step a) at 8000 rpm for 2 minutes, and then cooling to 40° C. to obtain dispersed lithium metal;
[0027] c) Dissolve 20g of polythiophene in 50g of mineral oil, then add it to the dispersed lithium metal obtained in step b), stir at 1000rpm for 15min, filter in an argon atmosphere, wash with ethane three times, and then use n-pentane Wash once; store airtight after vacuum drying.
[0028] Negative electrode sheet preparation: choose natural graphite as the negative electrode active material, mix it with solvent water according to the ratio of active material: conductive a...
Embodiment 2
[0035] The preparation of stabilized lithium metal powder with positive temperature coefficient effect comprises the following steps:
[0036] a) Put a 3*3cm lithium metal sheet into a reactor with a stirrer at room temperature under a dry argon flow atmosphere, add 1kg of mineral oil, heat to 220°C, and stir at 400rpm to obtain molten lithium metal;
[0037] b) stirring the molten lithium metal obtained in step a) at 8000 rpm for 3 minutes, and then cooling to 40° C. to obtain dispersed lithium metal;
[0038] c) 20g of poly-3-methylthiophene was dissolved in 50g of mineral oil, then added to the dispersed lithium metal obtained in step b), stirred at 1000rpm for 18min, filtered in an argon atmosphere, washed three times with ethane, and then Wash once with n-pentane; vacuum dry and pulverize and store in airtight.
[0039] Negative sheet preparation: Lithium titanate is selected as the negative active material, mixed with solvent water according to the ratio of active mater...
Embodiment 3
[0046] The preparation of stabilized lithium metal powder with positive temperature coefficient effect comprises the following steps:
[0047] a) Put a 3*3cm lithium metal sheet into a reactor with a stirrer at room temperature under a dry argon flow atmosphere, add 1kg of mineral oil, heat to 230°C, and stir at 700rpm to obtain molten lithium metal;
[0048] b) stirring the molten lithium metal obtained in step a) at 8000 rpm for 5 minutes, and then cooling to 40° C. to obtain dispersed lithium metal;
[0049] c) 20g of poly-3-decylthiophene was dissolved in 50g of mineral oil, then added to the dispersed lithium metal obtained in step b), stirred at 1000rpm for 20min, filtered in an argon atmosphere, washed three times with ethane, and then Wash once with n-pentane; vacuum dry and pulverize and store in airtight.
[0050] Negative electrode sheet preparation: choose graphite, silicon material or alloy negative electrode material as the negative electrode active material, mi...
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