A kind of preparation method of three-dimensional macroporous graphene-carbon nanotube-molybdenum disulfide composite material
A three-dimensional macroporous, carbon nanotube technology, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of poor stability and low first cycle efficiency, and achieve good stability, high lattice integrity, and high capacity. Effect
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specific Embodiment approach 1
[0035] Specific embodiment 1: A three-dimensional macroporous graphene-carbon nanotube-molybdenum disulfide composite material described in this embodiment is obtained by pretreatment and chemical vapor deposition of metal foam with a pore diameter of 0.1 mm to 5 mm. Porous graphene / foamed metal composite, then place the three-dimensional macroporous graphene / foamed metal composite in an aqueous solution of nickel nitrate and cobalt chloride, dry, and chemical vapor deposition to obtain a three-dimensional macroporous graphene / carbon nanotube / Foamed metal composites, immersing the three-dimensional macroporous graphene / carbon nanotubes / foamed metal composites in the etching solution to obtain three-dimensional macroporous graphene / carbon nanotubes. Molybdenum disulfide is loaded on the nanotubes to obtain three-dimensional macroporous graphene / carbon nanotubes loaded with molybdenum disulfide, and finally the three-dimensional macroporous graphene / carbon nanotubes loaded with ...
specific Embodiment approach 2
[0040] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the metal foam with a pore size of 0.1 mm to 5 mm is pretreated and chemical vapor deposited to obtain a three-dimensional macroporous graphene / metal foam composite. It is carried out according to the following steps: the metal foam with a pore diameter of 0.1 mm to 5 mm is immersed in acetone for 3 min to 15 min, ethanol for 3 min to 15 min, and hydrochloric acid with a mass percentage of 1% to 5% for 3 min to 7 min to obtain the base material. Then place the base material in a chemical vapor deposition device, pass through carbon source gas and carrier gas, and deposit at a temperature of 850°C to 1100°C for 4min to 15min to obtain a three-dimensional macroporous graphene / foam metal composite;
[0041] The total gas flow of the carbon source gas and carrier gas is 20 sccm to 800 sccm; the carbon source gas is methane, and the gas flow of methane is 0.5 sccm to 20 sccm; the carrier gas is a mi...
specific Embodiment approach 3
[0042] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the described three-dimensional macroporous graphene / foam metal composite is placed in the aqueous solution of nickel nitrate and cobalt chloride, dried, and then Chemical vapor deposition to obtain a three-dimensional macroporous graphene / carbon nanotube / foam metal composite, specifically as follows: ① Dissolve nickel nitrate and cobalt chloride in deionized water to obtain nickel nitrate and cobalt chloride immerse the three-dimensional macroporous graphene / foam metal composite in the aqueous solution of nickel nitrate and cobalt chloride for 30min to 60min, then take it out and dry it on a hot plate at a temperature of 30°C to 50°C; ②, repeat Step 2 ① 5 to 10 times to obtain the impregnated composite material; ③, place the impregnated composite material in a chemical vapor deposition device at a temperature of 600°C to 850°C at a rate of 4.5mL / min to 5.5mL / The ra...
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