A kind of preparation method of negative electrode material of lithium ion battery
A technology for lithium ion batteries and negative electrode materials, applied in battery electrodes, nanotechnology for materials and surface science, secondary batteries, etc., can solve problems such as low specific capacity, achieve high capacity, high charge-discharge rate, safety good effect
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Embodiment 1
[0036] Step 1, mix titanium dioxide and NaOH with a concentration of 10 mol / L at a molar ratio of 1:2, add it to the reactor, stir and react at 150°C for 24 hours, and obtain an intermediate product;
[0037] Step 2, the intermediate product obtained in step 1 was washed with deionized water, dried in vacuum at 100°C for 24h, and then sintered at 400°C for 10h to obtain titanium dioxide (TiO 2 )nanotube;
[0038] Step 3, 0.5 g of the TiO2 nanotubes obtained in step 2, 13.5 mL of 1mol / L lithium hydroxide solution, 0.6 microliters of polyvinylpyrrolidone dispersant, and 25 mL of n-butanol were mixed and stirred evenly to obtain a microemulsion containing titanium dioxide nanotubes;
[0039] Step 4, adding n-butyl titanate to the microemulsion containing titanium dioxide nanotubes obtained in step 3, stirring evenly, transferring to a reaction kettle, sealing and heating to 180°C, keeping the temperature for 10 hours, and then cooling to room temperature to obtain Microemulsion ...
Embodiment 2
[0043] Step 1, mix titanium dioxide and NaOH with a concentration of 10 mol / L at a molar ratio of 1:2, add it to the reactor, stir and react at 150°C for 24 hours, and obtain an intermediate product;
[0044] Step 2, the intermediate product obtained in step 1 was washed with deionized water, dried in vacuum at 100°C for 24h, and then sintered at 400°C for 10h to obtain titanium dioxide (TiO 2 )nanotube;
[0045] Step 3, 0.5 g of the TiO2 nanotubes obtained in step 2, 13.5 mL of 1mol / L lithium hydroxide solution, 0.6 microliters of polyvinylpyrrolidone dispersant, and 25 mL of n-butanol were mixed and stirred evenly to obtain a microemulsion containing titanium dioxide nanotubes;
[0046] Step 4, adding n-butyl titanate to the microemulsion containing titanium dioxide nanotubes obtained in step 3, stirring evenly, transferring to a reaction kettle, sealing and heating to 150°C, keeping the temperature for 12 hours, and then cooling to room temperature to obtain Microemulsion ...
Embodiment 3
[0050] Step 1, mix titanium dioxide and NaOH with a concentration of 10 mol / L at a molar ratio of 1:2, add it to the reactor, stir and react at 150°C for 24 hours, and obtain an intermediate product;
[0051] Step 2, the intermediate product obtained in step 1 was washed with deionized water, dried in vacuum at 100°C for 24h, and then sintered at 400°C for 10h to obtain titanium dioxide (TiO 2 )nanotube;
[0052] Step 3, 0.5 g of the TiO2 nanotubes obtained in step 2, 13.5 mL of 1mol / L lithium hydroxide solution, 0.6 microliters of polyvinylpyrrolidone dispersant, and 25 mL of n-butanol were mixed and stirred evenly to obtain a microemulsion containing titanium dioxide nanotubes;
[0053] Step 4, adding n-butyl titanate to the microemulsion containing titanium dioxide nanotubes obtained in step 3, stirring evenly, transferring to a reaction kettle, sealing and heating to 200°C, keeping the temperature for 8 hours, and then cooling to room temperature to obtain Microemulsion a...
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