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

Quinone compound-graphene composite material and preparation method thereof as well as flexible lithium secondary battery

A composite material and compound technology, applied in the field of energy materials, can solve the problems of poor electrical conductivity and poor stability, and achieve the effects of high capacity, good cycle stability, improved electrical conductivity and flexibility

Inactive Publication Date: 2015-07-01
HUAWEI TECH CO LTD
View PDF11 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the first aspect of the embodiment of the present invention provides a quinone compound-graphene composite material, which has high energy density, high flexibility, high conductivity and high stability, and solves the problems of organic compounds in the prior art. Poor electrical conductivity and poor stability of positive electrode materials, the composite material can be used as positive electrode material for the preparation of flexible electrodes

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
  • Quinone compound-graphene composite material and preparation method thereof as well as flexible lithium secondary battery
  • Quinone compound-graphene composite material and preparation method thereof as well as flexible lithium secondary battery
  • Quinone compound-graphene composite material and preparation method thereof as well as flexible lithium secondary battery

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0056] In a second aspect, an embodiment of the present invention provides a method for preparing a quinone compound-graphene composite material, comprising the following steps:

[0057] The quinone compound monomer is aminated by a nitration reduction method to obtain a mixed solution containing the aminated quinone compound monomer;

[0058] filtering, washing, and drying the mixed solution containing the aminated quinone compound monomer to obtain an aminated quinone compound monomer powder;

[0059] Add the graphene oxide powder into the mixed acid of concentrated sulfuric acid and concentrated nitric acid in a preset ratio, react at 50-60°C for 5-15 hours, then perform suction filtration, washing and vacuum drying to obtain surface carboxylated graphene powder body;

[0060] adding the aminated quinone compound monomer powder and the surface carboxylated graphene powder into water or ethanol, and ultrasonically dispersing to obtain a mixed dispersion;

[0061] The mixed...

Embodiment 1

[0097] A preparation method of quinone compound-graphene composite material, comprising the following steps:

[0098] Step S11, amination of p-benzoquinone: nitrate p-benzoquinone with a mixed acid of concentrated sulfuric acid and concentrated nitric acid by nitration reduction method to obtain dinitrated p-benzoquinone, and then add sodium sulfide for reduction to obtain aminated p-benzoquinone containing Mixed solution, the mixed solution is filtered, washed, and dried to obtain aminated p-benzoquinone powder; the amination reaction formula is shown in formula (1):

[0099]

[0100] Step S12, graphene carboxylation: add concentrated sulfuric acid and concentrated nitric acid mixed acid with a volume ratio of 3:1 to the graphene oxide powder, react at 60°C for 12 hours under the conditions of stirring and ultrasonic dispersion, filter through a filter membrane, distilled water After washing and vacuum drying, a carboxylated graphene powder with a large number of carboxyl ...

Embodiment 2

[0106] A preparation method of quinone compound-graphene composite material, comprising the following steps:

[0107] Step S21, amination of 1,5-anthraquinone: nitrate 1,5-anthraquinone with a mixed acid of concentrated sulfuric acid and concentrated nitric acid by nitration reduction method to obtain 1,5-dinitrated anthraquinone, and then add sodium sulfide for reduction , to obtain a mixed solution containing 1,5-diaminoanthraquinone, the mixed solution is filtered, washed, and dried to obtain 1,5-diaminoanthraquinone powder; the amination reaction formula is as shown in formula (4) Shown:

[0108]

[0109] Step S22, graphene carboxylation: add concentrated sulfuric acid and concentrated nitric acid mixed acid with a volume ratio of 3:1 to the graphene oxide powder, react at 50°C for 12 hours under the conditions of stirring and ultrasonic dispersion, filter through a filter membrane, distilled water After washing and vacuum drying, carboxylated graphene powder with a la...

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

Provided is a quinone compound-graphene composite, comprising a quinone compound and graphene, wherein the quinone compound is bonded on the surface of the graphene, and the quinone compound is a quinone monomer or a quinone polymer. The quinone compound-graphene composite has a high energy density, high flexibility, a high electrical conductivity and high stability, and can be used as a positive electrode material for preparing a flexible electrode. Also provided are a method for preparing the composite, and a flexible lithium secondary battery using the material as a positive electrode active material.

Description

technical field [0001] The invention relates to the field of energy materials, in particular to a quinone compound-graphene composite material, a preparation method thereof, and a flexible lithium secondary battery. Background technique [0002] In order to meet people's increasing demand for miniaturization of electronic products, flexible wearable portable electronic products have become the future development trend, such as electronic paper, rollable display screens, electronic tags and flexible sensors, etc.; flexible energy storage devices It is composed of flexible electrodes, electrolyte and flexible packaging materials, among which the development of flexible electrodes is the key to its development. [0003] Compounds or polymers can also be suitable for preparing electrode materials for flexible energy storage devices. Organic lithium-ion batteries usually use compounds or organic polymers as the positive electrode material of the battery. The organic positive ele...

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): H01M4/60H01M4/38H01M10/0525H01M50/414H01M50/417H01M50/42H01M50/426H01M50/457
CPCC01B31/04H01M4/60H01M10/052H01M4/625H01M50/42H01M50/426H01M50/414H01M50/417H01M50/457H01M4/137H01M4/1399C01B32/194H01M4/133H01M4/1393Y02E60/10Y02P70/50H01M50/44C07C225/28H01M4/0404H01M4/0433H01M4/0471H01M4/587H01M4/623H01M4/661H01M10/0525H01M10/0585H01M2004/027H01M2004/028H01M2220/30
Inventor 王平华
Owner HUAWEI TECH CO LTD
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