Preparation method of negative electrode material of ion battery
A negative electrode material, lithium ion battery technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of low conductivity, limited high current charge and discharge performance, and low lithium ion diffusion coefficient, and achieve good material performance, The process is simple and easy to control, and the process cost is low.
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Embodiment 1
[0024] Drop 6.9mL of butyl titanate into a beaker containing 40mL of absolute ethanol, stir for 0.5 hours, the molar ratio of butyl titanate to absolute ethanol is 1:34; at the same time, dissolve 0.705g of lithium hydroxide In a beaker filled with 40 mL of deionized water, the molar ratio of lithium hydroxide to deionized water was 1:132, and stirred until the lithium hydroxide was completely dissolved. The lithium hydroxide solution was dropped dropwise into the beaker containing butyl titanate and ethanol, and at this time, the dropwise addition was required under vigorous stirring. After the dropwise addition, the resulting milky white solution needs to be stirred vigorously for 2 hours;
[0025] The obtained milky white solution was put into a hydrothermal reaction kettle, sealed, and the reaction kettle was placed in a drying oven at 180° C. for heating for 24 hours. After the reaction, the product was centrifuged, the supernatant was discarded, and the precipitate was ...
Embodiment 2
[0034] Drop 6.9mL of butyl titanate into a beaker containing 35mL of absolute ethanol and stir for 0.5 hours. The molar ratio of butyl titanate to absolute ethanol is 1:30; at the same time, dissolve 0.755g of lithium hydroxide In a beaker filled with 40 mL of deionized water, the molar ratio of lithium hydroxide to deionized water was 1:123.5, and stirred until the lithium hydroxide was completely dissolved. The lithium hydroxide solution was dropped dropwise into the beaker containing butyl titanate and ethanol, and at this time, the dropwise addition was required under vigorous stirring. After the dropwise addition, the resulting milky white solution needs to be stirred vigorously for 1 hour;
[0035] The obtained milky white solution was put into a hydrothermal reaction kettle, sealed, and the reaction kettle was placed in a drying oven at 160° C. for heating for 22 hours. After the reaction, the product was centrifuged, the supernatant was discarded, and the precipitate ...
Embodiment 3
[0038] Drop 6.9mL butyl titanate into a beaker containing 46.7mL of absolute ethanol, stir for 0.5 hours, the molar ratio of butyl titanate to absolute ethanol is 1:40; at the same time, add 0.671g of lithium hydroxide Dissolve in a beaker filled with 40 mL of deionized water, the molar ratio of lithium hydroxide to deionized water is 1:138.9, and stir until the lithium hydroxide is completely dissolved. The lithium hydroxide solution was dropped dropwise into the beaker containing butyl titanate and ethanol, and at this time, the dropwise addition was required under vigorous stirring. After the dropwise addition, the generated milky white solution needs to be stirred vigorously for 3 hours;
[0039] The obtained milky white solution was put into a hydrothermal reaction kettle, sealed, and the reaction kettle was placed in a drying oven at 170° C. to heat for 23 hours. After the reaction, the product was centrifuged, the supernatant was discarded, and the precipitate was thor...
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