Three-dimensional graphene nanoribbon/carbon nanoribbon bridged structural material, and preparation method and application thereof
A technology of graphene nanobelts and carbon nanotubes, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of reduced lithium storage space in batteries, poor stability of lithium batteries, and easy structure of GNRs. collapse and other problems, to achieve the effect of enhanced lithium storage capacity, good electrical conductivity and mechanical properties, sufficient electron transport and mass transfer
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[0047] Example 1
[0048] (1) Take 10 mL of 0.5 mg / mL carboxylated carbon nanotube solution, add 100 uL of pyrrole as N source, and ultrasonically disperse until a uniform suspension is formed.
[0049] (2) Seal the suspension 1 in a 15 mL hydrothermal reaction kettle and place it in an oven at 180 ℃ for 12 h to obtain a massive carbon nanotube hydrogel.
[0050] (3) Place the pre-obtained carbon nanotube hydrogel in 2 M KNO 3 The solvent is replaced in the solution for 24 hours. After the replacement is complete, the hydrogel is taken out and sealed in a 15 mL hydrothermal reactor, and then placed in an oven at 180 ℃ for 48 hours to obtain GNRsCNT hydrogel.
[0051] (4) Place the obtained hydrogel in 1L of water for replacement to wash away the remaining impurities (KNO 3 And its reaction by-products), pour out the distilled water after 10h replacement, repeat 6-8 times. Then put the cleaned hydrogel in 500 mL of tert-butanol for replacement, pour out the tert-butanol after replaceme...
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[0053] Example 2
[0054] (1) Take 15 mL of 10 mg / mL carboxylated carbon nanotube solution, add 1 mL of thiophene as S source, and ultrasonically disperse until a uniform suspension is formed2.
[0055] (2) Seal the suspension 2 in a 20 mL hydrothermal reactor and place it in an oven at 200 ℃ for 6 h to obtain a massive carbon nanotube hydrogel.
[0056] (3) Place the pre-obtained carbon nanotube hydrogel at 1 M K 2 SO 4 The solvent is replaced in the solution for 48 h. After the replacement is complete, the hydrogel is taken out and sealed in a 20 mL hydrothermal reaction vessel, and then placed in an oven at 180 ℃ for 36 h to obtain GNRsCNT hydrogel.
[0057] (4) Place the obtained hydrogel in 1 L of distilled water for replacement to wash away the remaining impurities (K 2 SO 4 And its reaction by-products), pour out the distilled water after 10 h of replacement, repeat 6-8 times. Add acetone to the hydrogel, pour out the acetone after soaking for 10 hours, repeat 4 times to obtain...
Example Embodiment
[0059] Example 3
[0060] (1) Take 30 mL of 15 mg / mL carboxylated carbon nanotube solution, add 3 mL of pyrrole and 3 mL of thiophene as N and S sources respectively, and ultrasonically disperse until a uniform suspension 3 is formed.
[0061] (2) Seal the suspension 3 in a 50 mL hydrothermal reactor and place it in an oven at 140 ℃ to react for 24 h to obtain a massive carbon nanotube hydrogel.
[0062] (3) Place the pre-obtained carbon nanotube hydrogel in 1 M KNO 3 The solvent is replaced in the solution for 48 h. After the replacement is complete, the hydrogel is taken out and sealed in a 50 mL hydrothermal reactor, and then placed in an oven at 180 ℃ for 60 h to obtain GNRsCNT hydrogel.
[0063] (4) Place the obtained hydrogel in 1L of water for replacement to wash away the remaining impurities (KNO 3 And its reaction by-products), pour out the distilled water after 10h replacement, repeat 6-8 times. Then add ethanol to the hydrogel, pour out the ethanol after soaking for 5 hour...
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