Method for preparing graphene-based nanomaterials by electron beam irradiation

An electron beam irradiation, graphene-based technology, applied in nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of low process efficiency, environmental protection, long time pyrolysis reduction, and highly toxic hydrazine hydrate, and achieve performance The effect of superiority, short preparation period and stable cycle performance

Inactive Publication Date: 2012-02-22
SHANGHAI UNIV
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many people use hydrazine hydrate aqueous solution reduction or pyrolytic reduction to prepare graphene nanomaterials. However, hydrazine hydrate is highly toxic, the reduction time is long (24 hours), the process efficiency is low, and there are environmental problems.
Pyrolytic reduction usually takes a long time and is inefficient

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
  • Method for preparing graphene-based nanomaterials by electron beam irradiation
  • Method for preparing graphene-based nanomaterials by electron beam irradiation
  • Method for preparing graphene-based nanomaterials by electron beam irradiation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment one: at first, potassium persulfate (K 2 S 2 o 8 ) 2.5g, phosphorus pentoxide (P 2 o 5 ) 2.5g, dissolved in 12ml of concentrated sulfuric acid, heated to 80°C; then 3g of natural graphite was added to the above solution, and kept at 80°C for 4.5 hours; cooled to room temperature, diluted with 500ml of deionized water, and left to stand overnight; filtered, with 0.2mm filter to filter out the residual acid; dry in a vacuum oven at 60°C; dissolve the above product in 120ml of concentrated sulfuric acid, slowly add 15g of potassium permanganate into the solution in an ice bath; stir at a constant temperature of 35°C for 2 hours, Dilute slowly with 250ml of water and let stand for 2 hours; add 700ml of water to dilute, 20mlH 2 o 2 (30%) was added to the above solution; filtered and then washed with 1 L of 1:10 HCl solution; dissolved in a small amount of water or ethanol, ultrasonicated for 20-30 minutes, washed, filtered, and separated to obtain a precipita...

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

No PUM Login to view more

Abstract

The invention relates to a method for preparing graphene-based nanomaterials by an electron beam irradiation method. In the method, natural graphite is first oxidized to form graphite oxide, and then the layers of graphite oxide are peeled off by ultrasound in a solution state, and then the graphite oxide is reduced by irradiation of a certain dose of electron beams to obtain graphene nanomaterials. The method of the invention has simple preparation process, can be operated at normal temperature, does not add any catalyst and chemical initiator, has short preparation period, large output and high yield, and can be applied on a large scale.

Description

technical field [0001] The invention relates to a preparation method of a graphene-based nanometer material. In particular, the invention relates to a method for preparing quasi-two-dimensional graphene-based nanomaterials by electron beam irradiation, which belongs to the technical field of electrochemistry and material synthesis. Background technique [0002] Lithium-ion secondary batteries have the advantages of high specific energy, high operating voltage and long life, and have been widely used in portable appliances such as mobile phones and notebook computers. With the continuous development of electric vehicles and advanced electronic equipment, power supplies with higher storage capacity and cycle life are required. Commercially available highly graphitized carbon anode materials exhibit relatively low lithium storage capacity (<372mAh / g, LiC 6 ), are increasingly unable to meet the requirements of technological development, and finding new carbon anode materia...

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 Patents(China)
IPC IPC(8): C01B31/02B82B3/00
Inventor 赵兵潘登余王松蒋永焦正张海娇陶海华庄华张国华
Owner SHANGHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap