Ultra-short carbon nanotube-graphene composite material and preparation method and application thereof
A carbon nanotube and composite material technology, applied in the direction of carbon nanotubes, multi-walled carbon nanotubes, graphene, etc., can solve the problem that the performance is difficult to maintain for a long time, the structural stability of composite materials is poor, and graphene and carbon nanotubes are easy to fall off and separate. and other issues to achieve the effect of enhancing the interaction force and maintaining long-term stability
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[0035]Example 1
[0036]Step S1: Measure 50 mL of the ultra-short carbon nanotube dispersion prepared above and 25 mL of the graphene oxide dispersion (volume ratio 1:0.5), and put them into two beakers, respectively, under ice bath conditions. Disperse ultrasonically for 60 minutes; then, keep the ice bath and ultrasonically, slowly drop the ultra-short carbon nanotube dispersion into the graphene oxide dispersion. After the addition, continue to sonicate for 60 minutes to obtain the ultra-short carbon nanotube-redox graphene composite Material solution.
[0037]Step S2: Add a certain amount of NaOH to the ultra-short carbon nanotube-redox graphene composite solution in step S1 to adjust the pH to 9, and then add 1g NaBH4Stir to make it evenly dispersed, and then carry out a controlled reduction reaction at 60°C under the protection of nitrogen for 1.5 hours. After washing the product with deionized water and PTFE suction filtration, the product is vacuum dried at room temperature for 48...
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