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

Preparation method and application of nitrogen-doped porous graphene

A porous graphene and nitrogen-doped technology, which is applied in the fields of new nano-carbon materials, nano-devices, lithium-ion batteries, and supercapacitors, can solve the problems of harsh preparation methods and achieve the effect of shortening the reaction time

Inactive Publication Date: 2018-03-23
TAIYUAN UNIV OF TECH
View PDF8 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for preparing nitrogen-doped porous graphene in order to solve the problem that the preparation method of nitrogen-doped porous graphene has harsh conditions and is restricted in popularization and application in the prior art.

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
  • Preparation method and application of nitrogen-doped porous graphene
  • Preparation method and application of nitrogen-doped porous graphene
  • Preparation method and application of nitrogen-doped porous graphene

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] A preparation method of nitrogen-doped porous graphene, comprising the steps of:

[0030] Step 1: Mix graphene and / or modified graphene and etchant evenly in an aqueous solution, place them in a closed container with nitrogen-containing compounds after drying, and keep warm at 50-200°C for 30 minutes;

[0031] Step 2: put the airtight container in step 1 into a microwave oven to react for a few seconds, and perform acid treatment after the reaction to obtain nitrogen-doped porous graphene.

[0032] In an embodiment, graphene and / or modified graphene are heated with etchant and nitrogen-containing compound by microwave, so that graphene and / or modified graphene are reacted with etchant and nitrogen-containing compound, and the modified graphene It is preferably graphene oxide or fluorinated graphene, and the etchant is a metal compound. If it is modified graphene, such as graphene oxide or fluorinated graphene, etc., the active functional groups on its surface can great...

Embodiment 1

[0035] (1) Mix graphene and cobalt nitrate in an aqueous solution according to the mass ratio of 1:1, freeze-dry to obtain the mixture; place the mixture and ammonium carbonate in a closed container, wherein the mass ratio of graphene and ammonium carbonate is 1: 2. Heat to 100°C and hold for 30 minutes;

[0036] (2) Put the above-mentioned airtight container in a microwave oven, and heat it in microwave for 5s with a power of 1000 W;

[0037] (3) After the reaction, the product was treated in dilute hydrochloric acid, washed and dried to obtain nitrogen-doped porous graphene.

[0038] figure 1 For the transmission electron micrograph of the nitrogen-doped porous graphene prepared in this example, uniform pores are distributed on the surface of the graphene, and the diameter of the porous graphene is about 50 nm.

Embodiment 2

[0040] (1) Mix graphene oxide and nickel acetate in an aqueous solution at a mass ratio of 1:3, and dry the mixture in a vacuum oven at 40°C; place the mixture and ammonium bicarbonate in a closed container, in which graphene oxide and carbonic acid The mass ratio of ammonium hydrogen is 1:5, heated to 90°C and kept for 30min;

[0041] (2) Put the above-mentioned airtight container in a microwave oven, and heat it with a microwave for 10s at a power of 800 W;

[0042] (3) After the reaction, the product was treated in dilute sulfuric acid, washed and dried to obtain nitrogen-doped porous graphene.

[0043] figure 2 The scanning electron micrographs of the nitrogen-doped porous graphene prepared for this example before acid treatment, it can be seen that there are a large number of nano-nickel particles and uniformly distributed nanopores on the surface of the graphene.

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method and application of nitrogen-doped porous graphene. The preparation method comprises: mixing graphene and / or modified graphene with an etching agent to obtain a mixture; placing the mixture and a nitrogenous compound in a closed container, holding the temperature of 50-200 DEG C for 30 min, placing in a microwave oven, allowing reacting for seconds, andperforming acid treatment to obtain the nitrogen-doped porous graphene. The etching agent is a metallic compound. Compared with the prior art, the preparation method has the advantages that operationequipment is simple; production cost is low; more importantly, nitrogen doping for porous graphene is achieved during preparation of the porous graphene; reaction time is shortened since a microwave heating process is used; as the nitrogen-doped porous graphene has excellent properties, the nitrogen-doped porous graphene may be applied to electrode materials for supercapacitors and anode materialsfor lithium ion batteries.

Description

technical field [0001] The invention relates to the technical field of novel nano-carbon materials, in particular to a preparation method and application of nitrogen-doped porous graphene, which can be applied to the fields of nano-devices, supercapacitors, lithium-ion batteries and the like. Background technique [0002] As a new type of two-dimensional nano-carbon material, graphene has a huge theoretical specific surface area and ultra-high electrical and thermal conductivity. It is the thinnest and strongest material known so far. Due to its excellent physical and chemical properties, graphene has great potential application value in nano-devices, supercapacitors, lithium-ion batteries and other fields. Once discovered, graphene has attracted widespread attention from scientists and has become a research hotspot in recent years. [0003] In order to improve the performance of graphene, its energy band structure can be changed by doping it with heteroatoms, and its applic...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/194H01M4/583H01G11/32
CPCC01B2204/22H01G11/32H01M4/583Y02E60/10Y02E60/13
Inventor 曹海亮赵敏郭俊杰彭星
Owner TAIYUAN UNIV OF TECH
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com