Spinel lithium titanate inserted carbon nanotube electrode material and preparation method thereof
A technology of carbon nanotubes and electrode materials, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of high surface area of electrode materials, low charge-discharge rate, and complicated preparation steps, and achieve low surface area and high charge-discharge rate high effect
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Embodiment 1
[0024] Take a 500ml jar and add TiO 2 And Li 2 CO 3 , The molar ratio of lithium to titanium is 4:5; the addition accounts for TiO 2 And Li 2 CO 3 1.0% of the total weight of carbon nanotubes, polyvinylpyrrolidone and isopropanol solvent are mixed, and the solid-liquid ratio of the materials is 1:1.9. Steel balls are used as the ball milling medium (various diameters between 2 and 10 mm), and they are put into a 10cm diameter ball mill container together. The weight ratio of the medium to the material is 5:1. The ball milled at 400rpm for 16 hours will be uniformly dispersed and mixed. After the slurry is put into the drying vessel, it is dried at 180 degrees for 3 hours; the powder material obtained by drying is placed in a high temperature atmosphere furnace with nitrogen gas to make the oxygen content less than 100 ppm, and the temperature is raised to 800 ℃ after constant temperature roasting for 8 hours , The furnace is slowly cooled to room temperature to get dark Li 4 Ti ...
Embodiment 2
[0026] Take a 500ml jar and add TiO 2 And Li 2 CO 3 , The molar ratio of lithium to titanium is 4:5; the addition accounts for TiO 2 And Li 2 CO 3 0.6% of the total weight of carbon nanotubes, gum arabic and ethanol solvent are mixed, and the solid-liquid ratio of the materials is 1:1.9. Steel balls are used as the ball milling medium (various diameters between 2 and 10 mm), and are put into a 10cm diameter ball mill container together. The weight ratio of the medium to the material is 4:1, and the ball milled at 400rpm for 10 hours will be uniformly dispersed and mixed. After the slurry is put into the drying vessel, it is dried at 180 degrees for 2 hours; the dried powder material is placed in a high-temperature atmosphere furnace with nitrogen gas to make the oxygen content less than 100 ppm, and the temperature is raised to 750 ℃ after constant temperature roasting for 10 hours , The furnace is slowly cooled to room temperature to get dark Li 4 Ti 5 O 12 Cathode material. ...
Embodiment 3
[0028] Take a 500ml jar and add TiO 2 And Li 2 CO 3 , The molar ratio of lithium to titanium is 4:5; the addition accounts for TiO 2 And Li 2 CO 3 2% of the total weight of carbon nanotubes, polyvinyl butyral and dimethyl ether solvent are mixed, and the solid-liquid ratio of the materials is 1:1.9. Steel balls are used as the ball milling medium (various diameters between 2 and 10 mm), and they are put into a 10cm diameter ball mill container together. The weight ratio of the medium to the material is 6:1, and the ball milled at 400rpm for 20 hours will be uniformly dispersed and mixed. After the slurry, enter the drying vessel and dry it at 220°C for 1 hour; the powder material obtained by drying is placed in a high-temperature atmosphere furnace with nitrogen gas to make the oxygen content less than 100ppm, and the temperature is raised to 900°C after constant temperature roasting for 6 hours , The furnace is slowly cooled to room temperature to get dark Li 4 Ti 5 O 12 Cathod...
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