Lithium ion battery composite negative electrode material ZrO2 and preparation method thereof
A lithium-ion battery and negative electrode material technology, applied in battery electrodes, secondary batteries, nanotechnology for materials and surface science, etc., can solve the problems of good monodispersity, fast capacity decay, and low specific capacity, and achieve The preparation process is simple and feasible, good cycle stability, and the effect of inhibiting particle agglomeration
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Embodiment 1
[0028] First, use zirconium n-butoxide as zirconium source, disperse it in a certain volume of n-butanol, keep stirring the n-butanol solution containing zirconium alcohol at 40°C, and obtain a uniform solution after 30 minutes; then remove a certain volume of n-butanol solution Add ionized water into a certain volume of n-butanol, ultrasonically disperse it for 30 minutes, then add it into the above-mentioned zirconium alcohol alcohol solution at a speed of 10d / s, and control v (zirconium source): v (deionized water): v (n-butanol Alcohol) = 2: x: 80 (x = 0.5, 1, 1.5, 2); after reacting at 40°C for 1 hour, the temperature was raised to 60°C to start aging, and the whole aging process lasted for 8 hours. After the reaction is completed, after centrifugal washing and vacuum drying, ZrO can be obtained. 2 Precursor. Then place the precursor in an argon atmosphere for calcination, keep the temperature at 900°C for 5 hours, and cool down with the furnace to obtain the target prod...
Embodiment 2
[0033] First, use zirconium n-butoxide as zirconium source, disperse it in a certain volume of n-butanol, keep stirring the n-butanol solution containing zirconium alcohol at 40°C, and obtain a uniform solution after 30 minutes; then remove a certain volume of n-butanol solution Add ionized water into a certain volume of n-butanol, ultrasonically disperse it for 30 minutes, then add it into the above-mentioned zirconium alcohol alcohol solution at a speed of 10d / s, and control v (zirconium source): v (NaCl solution): v (n-propanol )=2:1:80; after reacting at 40°C for 1 hour, the temperature was raised to 60°C to start aging, and the whole aging process lasted for 8 hours. After the reaction is completed, after centrifugal washing and vacuum drying, ZrO can be obtained. 2 Precursor. Then place the precursor in an inert atmosphere for calcination, and calcine at a constant temperature of 600, 700, 900, 1000 and 1100°C for 5 hours, and cool down with the furnace to obtain the ta...
Embodiment 3
[0038] First, zirconium n-butoxide is used as the source of zirconium, which is dispersed in a certain volume of n-butanol, and the n-butanol solution containing zirconium alcohol is continuously stirred at 40°C, and a uniform solution is obtained after 30 minutes; then a certain volume of aqueous solution ( Deionized water, NaCl solution, NaOH solution and CH 3 COOH solution) was added to a certain volume of n-butanol, ultrasonically dispersed for 30 minutes and then added to the above-mentioned zirconium alcohol alcohol solution at a speed of 10d / s, and v (zirconium source): v (NaCl solution): v (n-propyl Alcohol) = 2:1:80; after reacting at 40°C for 1 hour, the temperature was raised to 60°C to start aging, and the whole aging process lasted for 8 hours. After the reaction is completed, after centrifugal washing and vacuum drying, ZrO can be obtained. 2 Precursor. Then place the precursor in an inert atmosphere for calcination, calcine at a constant temperature of 900 ° C...
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