| abstract |
The invention discloses a method for preparing MXene-graphite ring stacked carbon nanotubes by using low-temperature vacuum CVD. LiF and hydrochloric acid solutions are added with Ti 3 AlC 2 powder and stirred; then centrifuged, washed, and dried to obtain MXene powder; The powder is immersed in a mixed solution consisting of ethanol and nickel nitrate hexahydrate, and the MXene precipitate is separated after immersion, and dried; then placed in a CVD furnace and evacuated to a vacuum, introduced with an inert protective gas, and injected with hydrogen and acetylene after heating, The MXene-graphite ring-stacked carbon nanotube material was obtained after heat preservation. The invention uses the low-temperature vacuum CVD process to isolate oxygen, inhibits the oxidation process of MXene, and prevents the structure of MXene from being severely damaged, and the grown carbon nanotube has a unique graphite ring stacking structure, which can generate more defects. The polarization relaxation loss and electromagnetic wave absorption performance of the material are effectively improved. |