Graphene pipe-cladded metal oxide nanometer belt and preparation method thereof

A graphene tube, oxide technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as poor conductivity, kinetic performance, capacity loss, etc. Performance, full package, good effect

Inactive Publication Date: 2015-02-11
HUAZHONG UNIV OF SCI & TECH
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, metal oxide electrode materials are mostly studied in the field of electrochemical energy storage. However, these metal oxides have some shortcomings, such as poor electrical conductivity, kinetic performance or in the cycle process, especially higher rate Problems such as lower capacity decline, which are more obvious in the field of supercapacitors that require very high rate performance

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 pipe-cladded metal oxide nanometer belt and preparation method thereof
  • Graphene pipe-cladded metal oxide nanometer belt and preparation method thereof
  • Graphene pipe-cladded metal oxide nanometer belt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation of a graphene nanotube-wrapped molybdenum oxide nanoribbon comprises the following steps:

[0034] 1) Weigh 20 mg of dried molybdenum trioxide, stir and ultrasonically disperse in distilled water, then add 1 mL of polydiallyl dimethyl ammonium chloride solution, continue to stir for 5 minutes and then centrifuge, measure 5 mL of 1 mg / mL prepared by Hummer method Graphene oxide dispersion liquid, add the concentrated molybdenum oxide solution obtained by centrifugation into the graphene oxide dispersion liquid drop by drop, ultrasonically stir and wait for uniform dispersion, then suction filter and dry;

[0035] 2) Remove the dried membrane from the filter membrane, and perform annealing treatment under an argon atmosphere at a heating rate of 1-10°C / min, an annealing temperature of 500-1200°C, and a holding time of 60-120min to obtain A graphene nanotube-wrapped molybdenum oxide nanoribbon.

[0036] Such as figure 1 As shown, XRD proves that the molyb...

Embodiment 2

[0041] The preparation of a graphene nanotube-wrapped molybdenum oxide nanoribbon comprises the following steps:

[0042] 1) Weigh 100mg of dried molybdenum trioxide, stir and ultrasonically disperse in distilled water, then add 5mL of polydiallyldimethylammonium chloride solution, continue to stir for 20min and then centrifuge, measure 25mL of 1mg / mL prepared by Hummer method Graphene oxide dispersion liquid, add the concentrated molybdenum oxide solution obtained by centrifugation into the graphene oxide dispersion liquid drop by drop, ultrasonically stir and wait for uniform dispersion, then suction filter and dry;

[0043] 2) Remove the dried membrane from the filter membrane, and perform annealing treatment under a nitrogen atmosphere with a heating rate of 1-10°C / min, an annealing temperature of 500-1200°C, and a holding time of 60-120min to obtain a A graphene nanotube wrapped molybdenum dioxide nanoribbon.

Embodiment 3

[0045] The preparation of a graphene nanotube-wrapped molybdenum oxide nanoribbon comprises the following steps:

[0046] 1) Weigh 200mg of dried molybdenum trioxide, stir and ultrasonically disperse in distilled water, then add 10mL of polydiallyldimethylammonium chloride solution, continue to stir for 30min and then centrifuge, measure 50mL of 1mg / mL prepared by Hummer method Graphene oxide dispersion liquid, add the concentrated molybdenum oxide solution obtained by centrifugation into the graphene oxide dispersion liquid drop by drop, ultrasonically stir and wait for uniform dispersion, then suction filter and dry;

[0047] 2) Remove the dried membrane from the filter membrane, and perform annealing treatment in an ammonia atmosphere at a heating rate of 1-10°C / min, an annealing temperature of 300-400°C, and a holding time of 80-120min to obtain A graphene nanotube wrapped molybdenum dioxide nanoribbon.

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
lengthaaaaaaaaaa
widthaaaaaaaaaa
Login to view more

Abstract

The invention particularly relates to a graphene pipe-cladded metal oxide nanometer belt and a preparation method thereof. The method comprises the following steps (1) preparing a metal oxide precursor nanometer belt; (2) weighing the dried precursor nanometer belt, stirring and ultrasonically dispersing in distilled water, adding a poly dimethyl diallyl ammonium chloride solution, continuing to stir and then centrifuging, measuring graphene oxide dispersion liquid prepared by the Hummer method, gradually dropping the centrifuged precursor nanometer belt concentrated solution into the graphene oxide dispersion liquid, ultrasonically stirring, and carrying out suction filtration drying after evenly dispersing; (3) peeling off a dried membrane from a filter membrane, and carrying out annealing treatment in a nitrogen, argon or ammonia atmosphere. The graphene pipe-cladded metal oxide nanometer belt prepared by the method is beneficial to improvement of the specific surface area and the electrochemical property of the material; a one-dimensional channel is provided for electronic transmission and ionic migration by a one-dimensional nanometer structure; the graphene pipe-cladded metal oxide nanometer belt has good electrochemical property, and has an important application in the field of electrochemical energy storage.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite structures, and in particular relates to a graphene tube-wrapped metal oxide nanobelt and a preparation method thereof. Background technique [0002] In recent years, nanomaterials have attracted widespread attention due to their great scientific value and potential application value. Theoretical and experimental studies have shown that nanomaterials exhibit superior properties compared to bulk materials. In particular, one-dimensional nanomaterials (such as nanowires and nanotubes) have one-dimensional electron conduction channels, thus exhibiting excellent photoelectrochemical properties. At present, metal oxide electrode materials are mostly studied in the field of electrochemical energy storage. However, these metal oxides have some shortcomings, such as poor electrical conductivity, kinetic performance or in the cycle process, especially higher rate This is more obvious in the field o...

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): H01G11/24H01G11/30H01M4/36B82Y30/00
CPCY02E60/13H01G11/24H01G11/30H01G11/36H01G11/46H01G11/86
Inventor 霍开富王喆马国强
Owner HUAZHONG UNIV OF SCI & TECH
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