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Manufacturing method of three-dimensional graphene/graphite-phase carbonized nitrogen and application thereof

A graphene and graphite phase technology, applied in the field of preparation of three-dimensional graphene/graphite phase nitrogen carbide, can solve problems such as low specific capacitance, and achieve the effects of low production cost, wide application range and easy operation

Inactive Publication Date: 2017-11-07
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method of three-dimensional graphene / graphite phase nitrogen carbide, which is used to solve the technical problem of low specific capacitance existing in carbon-based supercapacitor materials

Method used

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  • Manufacturing method of three-dimensional graphene/graphite-phase carbonized nitrogen and application thereof
  • Manufacturing method of three-dimensional graphene/graphite-phase carbonized nitrogen and application thereof
  • Manufacturing method of three-dimensional graphene/graphite-phase carbonized nitrogen and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Disperse 40 mg of graphene oxide in 20 mL of deionized water, add 10 mg of graphite-phase carbonized nitrogen, and mix with low-temperature ultrasonic for 3 h at 10 °C, transfer the mixed solution to a stainless steel hydrothermal reaction kettle, keep it at 180 °C for 12 h, and cool naturally to room temperature to obtain a graphene / graphite phase nitrogen carbide hydrogel column, cut into slices, wash the product three times with deionized water, and freeze-dry at -40°C to obtain a three-dimensional graphene / g-C 3 N 4 .

[0023] figure 1 Three-dimensional graphene / g-C prepared for embodiment 1 3 N 4 Optical photographs of the hydrogel column (a) and slice after freeze-drying (b), by figure 1 (a) (b) It can be seen that the three-dimensional graphene / g-C obtained in this example 3 N 4 The hydrogel column has a regular columnar morphology with regular edges; and the shape is well maintained after freeze-drying, and it can be directly used as an electrode materia...

Embodiment 2

[0025] Disperse 50 mg of graphene oxide in 20 mL of deionized water, add 5 mg of graphite-phase carbonized nitrogen, and mix with low-temperature ultrasonic for 3 h at 12 °C, transfer the mixed solution to a stainless steel hydrothermal reaction kettle, keep it at 160 °C for 10 h, and cool naturally Three-dimensional graphene / g-C obtained at room temperature 3 N 4 Hydrogel column, sectioned, washed with deionized water three times, freeze-dried at -40°C to obtain three-dimensional graphene / g-C 3 N 4 .

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Abstract

The invention discloses a one-step manufacturing method of three-dimensional graphene / graphite-phase carbonized nitrogen based on a hydrothermal method. Through using a ultrasonic method, graphene oxide (GO) and graphite-phase carbonized nitrogen (g-C3N4) are mixed, and then hydrothermal reaction is performed. During a reaction process, the GO is restored and simultaneously the GO and the g-C3N4 are assembled into a hydrogel column. Then, through freeze drying, three-dimensional graphene / g-C3N4 is acquired. In the invention, operation is simple and is green and environmental protection; cost is low; a technology condition is easy to realize; a manufactured three-dimensional graphene / g-C3N4 composite material possesses a pore structure with a high orientation degree; in addition, the composite material possesses a high specific capacitance; and a latent application value is possessed on an aspect of a super capacitor.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nanomaterials, and in particular relates to a preparation method and application of three-dimensional graphene / graphite phase nitrogen carbide. Background technique [0002] As an emerging energy storage device, supercapacitors have shown great application potential in green energy due to their ultra-high power density and good cycle life, and have attracted extensive attention from researchers. Among them, the electrode material is the key factor affecting the electrochemical performance of supercapacitors, and graphene, as a new type of carbon material, has shown excellent performance in supercapacitor applications by virtue of its high conductivity, high theoretical specific surface area, and excellent mechanical properties. electrochemical properties. Graphene materials can self-assemble into macroscopic graphene blocks with a microscopic three-dimensional network structure t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30H01G11/36
CPCY02E60/13H01G11/86H01G11/24H01G11/30H01G11/36
Inventor 王晓敏田真李慧君窦湟琳章海霞
Owner TAIYUAN UNIV OF TECH
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