Spinel-type lithium titanate lithium-intercalated carbon nanotube electrode material and preparation method thereof
A carbon nanotube and spinel-type technology is applied in the field of spinel-type lithium titanate-type lithium-inserted carbon nanotube electrode materials and preparation fields, and can solve the problems of high surface area of electrode materials, low charge and discharge rate, and complicated preparation steps. and other problems, to achieve the effect of low surface area and high charge and discharge rate
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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; 2 and Li 2 CO 3 The total weight of 1.0% carbon nanotubes, polyvinylpyrrolidone and isopropanol solvents are mixed, and the solid-liquid ratio of the materials is 1:1.9. Steel balls are used as ball milling media (various diameters between 2 and 10 mm), and they are put into a ball milling container with a diameter of 10 cm. The weight ratio of the medium to the material is 5:1, and the ball is milled at 400 rpm for 16 hours to obtain a uniformly dispersed mixture. After the slurry is put into a drying vessel, dry at 180°C for 3 hours; the dried powder material is placed in a high-temperature atmosphere furnace, and nitrogen is passed through to make the oxygen content less than 100ppm, and the temperature is raised to 800°C for 8 hours after constant temperature roasting , slowly cooled to room temperature in the furnace to obtain dark Li 4 Ti 5 o 12 Cathode material. ...
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; 2 and Li 2 CO 3 The total weight of 0.6% 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 ball milling media (with various diameters between 2 and 10 mm), and they are put into a ball mill container with a diameter of 10 cm. The weight ratio of the medium to the material is 4:1, and the ball is milled at 400 rpm for 10 hours to obtain a uniformly dispersed mixture. After the slurry is put into a drying container, dry at 180°C for 2 hours; the dried powder material is placed in a high-temperature atmosphere furnace, and nitrogen is passed through to make the oxygen content less than 100ppm, and the temperature is raised to 750°C for 10 hours after constant temperature roasting , slowly cooled to room temperature in the furnace to obtain dark Li 4 Ti 5 o 12 Cathode material. Grinding...
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; 2 and Li 2 CO 3 The total weight of 2% carbon nanotubes, polyvinyl butyral and dimethyl ether solvents are mixed, and the solid-liquid ratio of the materials is 1:1.9. Steel balls are used as ball milling media (various diameters between 2 and 10 mm), and they are put into a ball mill container with a diameter of 10 cm. The weight ratio of the medium to the material is 6:1, and the ball is milled at 400 rpm for 20 hours to obtain a uniformly dispersed mixture. After the slurry is put into a drying container, dry at 220°C for 1 hour; the dried powder material is placed in a high-temperature atmosphere furnace, and nitrogen is passed through to make the oxygen content less than 100ppm, and the temperature is raised to 900°C for 6 hours after constant temperature roasting , slowly cooled to room temperature in the furnace to obtain dark Li 4 Ti 5 o 12 Cathode material. Gr...
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