Preparation method of carbon-clad holmium-doped lithium titanate composite negative material
A negative electrode material, lithium titanate technology, used in battery electrodes, electrical components, circuits, etc., can solve problems such as poor conductivity and poor discharge performance at high currents, and achieve improved conductivity, fast charge and discharge rates, and improved electrical conductivity. Effects of Cyclic Stability
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Embodiment 1
[0015] As an oil phase component, mix 100 parts by weight of monomer divinylbenzene, 100-150 parts by weight of hollow agent n-pentane, 5-10 parts by weight of nano silicon powder, and 7-10 parts by weight of acetone dispersant After ultrasonic dispersion, organic peroxide is added as a polymerization initiator to make a monomer mixture. In addition, as a water phase component, 500 parts by weight of deionized water, 10-20 parts by weight of polypropylene as a dispersant Alcohol is mixed.
[0016] Mix the obtained oil phase components and water phase components, and disperse them with ultrasonic waves to form a suspension. Stir the obtained suspension under a helium flow at a temperature of 90°C and keep it for 10 hours. Wash and dry the polymerized particles. Resin particles were obtained, and the obtained resin particles were heat-treated in an air atmosphere at a temperature of 400° C. for 2 hours, and then sintered in a helium atmosphere at a temperature of 1200° C. for 5 ...
Embodiment 2
[0020] As the oil phase component, the monomer divinylbenzene of 100 parts by weight, the hollow agent n-pentane of 150 parts by weight, the nano silicon powder of 10 parts by weight, the acetone dispersant of 10 parts by weight are mixed, after ultrasonic dispersion, and then An organic peroxide was added as a polymerization initiator to prepare a monomer mixture, and 500 parts by weight of deionized water and 20 parts by weight of polypropylene alcohol as a dispersant were mixed as a water phase component.
[0021] Mix the obtained oil phase components and water phase components, disperse them with ultrasonic waves to make a suspension, stir the obtained suspension under a helium flow at a temperature of 95°C, and keep it for 8 hours, wash and dry the polymerized particles. Resin particles were obtained, and the obtained resin particles were heat-treated in an air atmosphere at a temperature of 450° C. for 1 hour, and then sintered in a helium atmosphere at a temperature of 1...
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