Preparation method and application of graphene hollow carbon nanocages

A graphene and hollow carbon technology, applied in the field of preparation of graphene hollow carbon nano-cage materials, can solve the problems of high price, high energy consumption, complicated operation and the like, and achieve the effects of simple method, high efficiency and reduced preparation cost.

Active Publication Date: 2016-10-12
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to technical limitations, the equipment used in these methods is complex in structure and expensive, cumbersome in operation and high in energy consumption, and it is difficult to achieve mass production of graphene nanocages

Method used

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  • Preparation method and application of graphene hollow carbon nanocages
  • Preparation method and application of graphene hollow carbon nanocages
  • Preparation method and application of graphene hollow carbon nanocages

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Put bagasse, a solid-phase carbon source, in an oven at 80°C for 12 hours, and then crush it with a pulverizer. The average particle size after crushing is 2 cm; place the catalyst precursor nickel acetate in a ball mill for ball milling, and the average particle size after ball milling is 2 μm; get 20g of the gained bagasse particles and place them on the lower layer of the graphite crucible, get 7g of the gained nickel acetate particles and place them on the upper layer of the graphite crucible to form an upper and lower layer structure, and cover them with a graphite cover, place them in a box-type resistance furnace for heat treatment (such as figure 1 shown), the heat treatment temperature is 700°C, the heating time is 20min, and the heating rate is 10°C / min; finally, the upper layer product obtained is collected, soaked in 10mol / L hydrochloric acid for 2h, washed with distilled water, filtered, After drying, the graphene hollow nanocages are obtained.

[0042] The...

Embodiment 2

[0044] Put bagasse, a solid-phase carbon source, in an oven at 80°C for 12 hours, and then crush it with a pulverizer. The average particle size after crushing is 2 cm; place the catalyst precursor nickel acetate in a ball mill for ball milling, and the average particle size after ball milling is 0.5 μm; get 20g of the gained bagasse particles and place them on the lower layer of the graphite crucible, get 7g of the gained nickel acetate particles and place them on the upper layer of the graphite crucible to form an upper and lower layer structure, and cover them with a graphite cover, place them in a box-type resistance furnace for heat treatment (such as figure 1 shown), the heat treatment temperature is 700°C, the heating time is 20min, and the heating rate is 10°C / min; finally, the upper layer product obtained is collected, soaked in 10mol / L hydrochloric acid for 2h, washed with distilled water, filtered, After drying, the graphene hollow nanocages are obtained.

[0045] T...

Embodiment 3

[0047] Put bagasse, a solid-phase carbon source, in an oven at 80°C for 12 hours, and then crush it with a pulverizer. The average particle size after crushing is 2 cm; place the catalyst precursor nickel acetate in a ball mill for ball milling, and the average particle size after ball milling is 5 μm; get 20g of the gained bagasse particles and place them on the lower layer of the graphite crucible, get 7g of the gained nickel acetate particles and place them on the upper layer of the graphite crucible to form an upper and lower layer structure, and cover them with a graphite cover, place them in a box-type resistance furnace for heat treatment (such as figure 1 shown), the heat treatment temperature is 700°C, the heating time is 20min, and the heating rate is 10°C / min; finally, the upper layer product obtained is collected, soaked in 10mol / L hydrochloric acid for 2h, washed with distilled water, filtered, After drying, the graphene hollow nanocages are obtained.

[0048] The...

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Abstract

The invention discloses a preparation method and application of graphene hollow carbon nanocages. The preparation method comprises the following steps: by using crop waste as a solid-phase carbon source and transition metal acetate as a catalyst precursor, putting the solid-phase carbon source on the lower layer of the crucible, putting the catalyst precursor on the upper layer of the crucible to perform covering heat treatment, collecting the upper layer product, and carrying out acid treatment, washing, filtration and drying on the graphene hollow carbon nano cage material. The mass ratio of the solid-phase carbon source to the catalyst precursor is 1:(0.1-0.5); and the acid treatment is implemented by immersing the upper product in 8-12 mol/L hydrochloric acid for 1-3 hours. The method is used for large-scale preparation of the graphene nanocages by using the chemical-vapor-deposition-like technique based on cheap solid-phase carbon source, covering heat treatment and carbonous atmosphere self supply, solves the problems of expensive raw materials, complex equipment, complex operation, difficulty in mass production and the like at present, and is simple, convenient and efficient.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, and more specifically, to a preparation method and application of a graphene hollow carbon nanocage material. Background technique [0002] With the continuous development of energy technology, the application of nano-graphitic carbon materials in the field of electrochemistry is becoming more and more extensive. Nano-graphitic carbon materials have many advantages such as controllable structure, large specific surface area, good electrical conductivity, and high chemical stability. They have great application value in electrochemical systems such as lithium-ion batteries, fuel cells, and supercapacitors. Especially after the successive discoveries of fullerenes, carbon nanotubes and graphene and their entry into the public eye, people really understand the unique charm of nano-graphite carbon materials. Recently, more nanographitic carbon materials with new structures have been...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
CPCC01B2204/32C01P2002/72C01P2004/03C01P2004/04C01P2004/62C01P2004/64
Inventor 李泽胜刘绍康梁琪君徐鑫李德豪
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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