Application of red phosphorus/carbon nanotube composite material in sodium ion capacitor
A technology of carbon nanotubes and composite materials, which is applied in the application field of red phosphorus/carbon nanotube composite materials in sodium ion capacitors, and can solve problems such as electrode damage and slow diffusion of sodium ions
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Embodiment 1
[0038] Under an argon protective atmosphere, the red phosphorus was put into a ball mill jar for ball milling for 24 hours at a milling speed of 500 r / min. The obtained red phosphorus and carbon nanotubes are uniformly mixed according to the mass ratio of 2:1, and the obtained mixture is put into a glass tube to evacuate into a vacuum atmosphere, and heated with a muffle furnace. The temperature program of the muffle furnace is set as follows: at 5°C min -1 Raise the temperature to 450°C at a rate of 2 hours, then keep it at this temperature for 2 hours, and then increase the temperature at 2°C·min -1 Cooled to 300°C at a constant rate, then maintained at this temperature for 12 hours, and finally cooled naturally to room temperature. Finally, the red phosphorus / carbon nanotube composite material is obtained. The obtained red phosphorus / carbon nanotube composite material is used as the negative electrode, and the activated carbon is used as the positive electrode to assemble...
Embodiment 2
[0042]Under an argon protective atmosphere, the red phosphorus was put into a ball mill jar for ball milling for 24 hours at a milling speed of 500 r / min. The obtained red phosphorus and carbon nanotubes are uniformly mixed according to the mass ratio of 2:1, and the obtained mixture is put into a glass tube to evacuate into a vacuum atmosphere, and heated with a muffle furnace. The temperature program of the muffle furnace is set as follows: at 5°C min -1 Raise the temperature to 450°C at a rate of 2 hours, then keep it at this temperature for 2 hours, and then increase the temperature at 2°C·min -1 Cooled to 300°C at a constant rate, then maintained at this temperature for 12 hours, and finally cooled naturally to room temperature. Finally, the red phosphorus / carbon nanotube composite material is obtained. The obtained red phosphorus / carbon nanotube composite material is used as the negative electrode, and the activated carbon is used as the positive electrode to assemble ...
Embodiment 3
[0045] Under an argon protective atmosphere, the red phosphorus was put into a ball mill jar for ball milling for 20 hours, and the ball milling speed was 600r / min. The obtained red phosphorus and carbon nanotubes are uniformly mixed according to the mass ratio of 2:1, and the obtained mixture is put into a glass tube to evacuate into a vacuum atmosphere, and heated with a muffle furnace. The temperature program of the muffle furnace is set as follows: at 3°C min -1 Raise the temperature to 450°C at a rate of 2 hours, then keep it at this temperature for 2 hours, and then increase the temperature at 2°C·min -1 Cooled to 300°C at a constant rate, then maintained at this temperature for 12 hours, and finally cooled naturally to room temperature. Finally, the red phosphorus / carbon nanotube composite material is obtained. The obtained red phosphorus / carbon nanotube composite material is used as the negative electrode, and the activated carbon is used as the positive electrode ...
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