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

Method for preparing graphite alkenyl nanometer materials by electron beam irradiation method

An electron beam irradiation, nanomaterial 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 superior performance. , The effect of short preparation period and stable cycle performance

Inactive Publication Date: 2009-10-21
SHANGHAI UNIV
View PDF0 Cites 31 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 graphite alkenyl nanometer materials by electron beam irradiation method
  • Method for preparing graphite alkenyl nanometer materials by electron beam irradiation method
  • Method for preparing graphite alkenyl nanometer materials by electron beam irradiation method

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 as the above solution, 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 Float with 0.2mm filter to remove 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, then Slowly dilute with 250nl water, let it stand for 2 hours; add 700ml 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 precipitate for use; ...

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 graphite alkenyl nanometer materials by an electron beam irradiation method. The method comprises the following steps: firstly, oxidizing natural graphite to obtain oxidized graphite; secondly, realizing the stripping between layers of the oxidized graphite by ultrasonic sound at the state of solution; and finally reducing the oxidized graphite through certain dosage of electron beam irradiation, and obtaining the graphite alkenyl nanometer materials. The method has simple preparation process, short preparation period and high yield, can be operated at normal temperature, does not add any catalyst and chemical initiator, 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 Applications(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 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