Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Graphene and preparation method thereof as well as electrode material

An electrode material, graphene technology, applied in the directions of graphene, hybrid capacitor electrodes, nano-carbon, etc., can solve the problem of low nitrogen doping rate, achieve high doping amount, facilitate adsorption and mass transfer, and simple preparation method. Effect

Pending Publication Date: 2019-05-14
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of nitrogen-doped graphene by heat treatment is to pyrolyze the mixture of graphene oxide and nitrogen source at high temperature, and introduce nitrogen atoms into graphene. This method does not require high equipment, but because most of the reactions in this method occur At the lattice, edges and defects of graphene, so the nitrogen doping rate is generally low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Graphene and preparation method thereof as well as electrode material
  • Graphene and preparation method thereof as well as electrode material
  • Graphene and preparation method thereof as well as electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Take 1g of o-phenanthroline hydrochloride, add 20g of deionized water and 20g of ethanol, mix it with a water bath at 60°C, and dissolve it with magnetic stirring; then add 15g of melamine, continue stirring for 4h, then transfer to a blast drying oven, and dry at 100°C 12h, grinding to obtain carbon and nitrogen-containing organic matter.

[0052] The organic matter obtained above was placed in a corundum boat, and carbonized in a tube furnace at 900° C. for 2 h under an argon atmosphere to obtain nitrogen-doped wrinkled graphene with a high specific surface area.

[0053] Graphene prepared by the embodiment of the present invention 1 is carried out transmission electron microscope detection, detection result is as follows figure 1 and figure 2 shown by figure 1 and figure 2 It can be seen that the graphene sheet prepared in Example 1 of the present invention is very thin, and the number of layers is less than 5 layers.

[0054] Adopt Micromeritics ASAP-2020M phy...

Embodiment 2

[0057] Mix 2g of 1,10-phenanthroline with 10g of melamine, and grind until uniform in an agate mortar to obtain carbon and nitrogen-containing organic matter.

[0058] The organic matter obtained above was placed in a corundum boat, and carbonized in a tube furnace at 1000° C. for 4 hours in a nitrogen atmosphere to obtain nitrogen-doped wrinkled graphene with a high specific surface area.

[0059] According to the detection method of embodiment 1, the graphene prepared by the embodiment of the present invention 2 is detected, and the detection result is that the graphene sheet prepared by the embodiment of the present invention 2 is very thin, and the number of layers is below 5 layers; The specific surface area of ​​graphene is 1320m 2 g -1 , with a pore volume of 5.6 cm 3 g -1 ; The graphene prepared by Example 2 of the present invention contains three elements of C, N, and O, and the N content is 11.2 at%.

Embodiment 3

[0061] Take 1.5g of 5,6-dimethyl-1,10-phenanthroline and add it to 50g of methanol, and stir it magnetically in a water bath at 60°C; then add 10g of melamine and continue stirring until the solvent evaporates, then transfer to a blast drying oven , dried at 80°C for 12 hours, and ground to obtain organic matter containing carbon and nitrogen.

[0062] The organic matter prepared above was placed in a corundum boat, and carbonized in a tube furnace at 900°C for 2 hours under an argon atmosphere to obtain nitrogen-doped wrinkled graphene with a high specific surface area.

[0063] According to the detection method of embodiment 1, the graphene prepared by the embodiment of the present invention 3 is detected, and the detection result is that the graphene sheet prepared by the embodiment of the present invention 3 is very thin, and the number of layers is below 7 layers; The specific surface area of ​​graphene is 1288m 2 g -1 , with a pore volume of 5.2 cm 3 g -1 ; The graph...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Specific surface areaaaaaaaaaaa
Pore volumeaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of graphene. The preparation method comprises the following step: carbonizing an organic matter containing carbon and nitrogen to obtain graphene. The organic matter containing carbon and nitrogen is prepared by the following step: mixing a nitrogen-containing phenanthrene compound with an organic matter to obtain the organic matter containing carbon andnitrogen; the nitrogen-containing phenanthrene compound has the structure of formula I as shown in the specification, wherein R1-R8 are independently selected from alkyl, aromatic or alkoxy groups with the number of each of hydrogen atom and carbon atom being 1-12; m is equal to 0 or 1; n is equal to 0 or 1; and the organic matter is selected from one or more of vitamin, cyanamide, amino acid andnitrogen-containing dye. In the invention, a nitrogen-doped graphene material is prepared by direct carbonization of the organic matter containing carbon and nitrogen in one step, no step of removinga metal catalyst or transferring is required, the preparation process is simple and easy to operate, and the cost is saved. The invention also provides the graphene and an electrode material.

Description

technical field [0001] The invention relates to the technical field of carbon materials, in particular to a graphene, a preparation method thereof, and an electrode material. Background technique [0002] Graphene, as a new type of two-dimensional conductive material, is widely used in energy storage due to its ultra-high theoretical specific surface area, high charge carrier mobility, excellent mechanical properties, excellent mechanical properties and flexibility. This field has great application value and development potential. However, the graphene crystal with a complete structure has a smooth surface and an inert state, and its interaction with other media is weak. In order to make up for the defects of graphene and give full play to its excellent properties, the functional improvement of graphene has become a new research topic. Among them, element doping technology can effectively optimize the electronic structure of graphene, thereby improving its electrochemical ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01B32/184H01G11/36
Inventor 徐雪艳杨景栋周旭峰刘兆平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com