Novel titanium dioxide cathode material of power lithium ion cell and preparation method thereof
A lithium-ion battery and titanium dioxide technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of low charge and discharge capacity, general rate performance, and influence on the development of power lithium-ion batteries, and achieve high charge and discharge capacity and good rate The effect of performance and cycle performance
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[0026] Example 1
[0027] (1) Put 0.58g P123(EO 20 PO 70 EO 20 ), 7g of absolute ethanol, 0.45g of oxalic acid, 7.30g of hydrochloric acid, and water were mixed with magnetic stirring for 30 minutes, and then 4.5g of tetra-n-butyl titanate was added dropwise to the mixed solution and magnetically stirred for 1 hour.
[0028] (2) Add 4g of polystyrene beads synthesized by emulsifier-free polymerization into the above solution and magnetically stir for 2.5 hours, then centrifuge once to remove the excess solution, and bake under vacuum at 60°C for 4 hours to obtain a new layered mesopore Titanium dioxide precursor.
[0029] (3) The layered mesoporous titania precursor is calcined in a muffle furnace at 250°C for 2 hours, 350°C for 2 hours, 500°C for 2 hours, and the heating rate is 2°C / min. Mesoporous titanium dioxide anode material.
Example Embodiment
[0030] Example 2
[0031] (1) Add 0.2901g P123(EO 20 PO 70 EO 20 ), 6g of absolute ethanol, 0.3g of oxalic acid, 7.30g of hydrochloric acid, and water were mixed with magnetic stirring for 30 minutes, and then 4.5g of tetra-n-butyl titanate was added dropwise to the mixed solution and magnetically stirred for 2 hours.
[0032] (2) Add 4g of polystyrene beads synthesized by polymerization without emulsifier into the above solution and stir it magnetically for 2.5 hours, then centrifuge once to remove the excess solution, and bake under vacuum at 70°C for 4 hours to obtain a new layered mesopore Titanium dioxide precursor.
[0033] (3) The layered mesoporous titania precursor was calcined in a muffle furnace at 250°C for 2 hours, 300°C for 2 hours, 500°C for 2 hours, and the heating rate was 2°C / min. Mesoporous titanium dioxide.
Example Embodiment
[0034] Example 3
[0035] (1) Put 0.5801g P123(EO 20 PO 70 EO 20 ), 7g of absolute ethanol, 0.6g of oxalic acid, 8g of hydrochloric acid, and water were mixed with magnetic stirring for 30 minutes, then 3g of tetra-n-butyl titanate was added dropwise to the mixed solution, and the mixture was stirred magnetically for 1 hour.
[0036] (2) Add 2g of polystyrene pellets synthesized by polymerization without emulsifier into the above solution and stir magnetically for 3 hours, then centrifuge twice to remove the excess solution, and bake under vacuum at 60°C for 4 hours to obtain a new layered medium. Porous titanium dioxide precursor.
[0037] (3) The layered mesoporous titania precursor is calcined in a muffle furnace at 250°C for 3 hours, 350°C for 3 hours, 550°C for 3 hours, and the temperature rise rate is 3°C / min. Mesoporous titanium dioxide.
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