Preparation method of graphene/manganese dioxide composite material

A composite material, manganese dioxide technology, applied in graphene, chemical instruments and methods, manganese oxide/manganese hydroxide and other directions, can solve problems such as difficult removal, achieve uniform distribution, avoid agglomeration, and reduce internal resistance.

Active Publication Date: 2014-02-19
SHANGHAI INST OF TECH
View PDF3 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reducing agent and dispersant added at the same time will remain in the prepared material, which is difficult to remove completely

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 of graphene/manganese dioxide composite material
  • Preparation method of graphene/manganese dioxide composite material
  • Preparation method of graphene/manganese dioxide composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A preparation method of graphene / manganese dioxide composite material, specifically comprising the following steps:

[0043] (1) According to the ratio of graphite:organic solvent 1 of 1g:1L, add graphite into organic solvent 1, control temperature 20-40°C, power 200W, and perform ultrasonication for 10h to obtain a dispersion;

[0044] The organic solvent 1 is 1-methyl-2-pyrrolidone;

[0045] Described graphite is the natural flake graphite of crossing 32 mesh sieves;

[0046] The dispersion obtained above is centrifuged at a speed of 4000r / min for 1h, and the resulting supernatant is the graphene dispersion;

[0047] (2), according to manganese ion salt: organic solvent 2 is the ratio of 1g:1L, manganese ion salt is dissolved in organic solvent 2 to obtain 1g / L manganese ion salt solution;

[0048] Described manganese ion salt is manganese nitrate;

[0049] The organic solvent 2 is the same as the organic solvent 1 used in step (1), that is, 1-methyl-2-pyrrolidone;...

Embodiment 2

[0063] A preparation method of graphene / manganese dioxide composite material, specifically comprising the following steps:

[0064] (1), the preparation process of the graphene dispersion is the same as in Example 1;

[0065] (2), according to manganese ion salt: organic solvent 2 is the ratio of 1g:1L, manganese ion salt is dissolved in organic solvent 2 to obtain 1g / L manganese ion salt solution;

[0066] Described manganese ion salt is manganese sulfate;

[0067] The organic solvent 2 is the same as the organic solvent used in step (1), that is, 1-methyl-2-pyrrolidone is used as the solvent;

[0068] Add the manganese ion salt solution obtained above to the graphene dispersion obtained in step (1), so that the manganese ion concentration is 0.1mmol / L, and the graphene solid content is 0.02g / L, and then ultrasonically for 30min to make graphene adsorb Manganese ions are positively charged to obtain a positively charged graphene dispersion;

[0069] (3) Take 50 mL of the p...

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 discloses a preparation method of a graphene/manganese dioxide composite material. The preparation method comprises the following steps: graphite is ultrasonically stripped directly in an organic solvent to obtain a graphene dispersion liquid; a manganese ion salt is added in the obtained graphene dispersion liquid; graphene adsorbs added manganese ions to carry with positive charges; and an electrophoretic deposition method is adopted to prepare the graphene/manganese dioxide composite material. The graphene of the method is prepared by adopting the liquid-phase ultrasonic stripping method, and the oxidizing treatment is not implemented, so that the defects are fewer, and the complete structure of the graphene is retained; the electrophoretic deposition method can be adopted to evenly and controllably deposit the graphene/manganese dioxide composite material on the surface of any three-dimensional conducting matrix. The method has the advantages such as easiness in operation, low production cost, high product uniformity and easiness in control.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a preparation method of a graphene / manganese dioxide composite material. Background technique [0002] Since the discovery of graphene in 2004, it has attracted widespread attention of scientific researchers. Graphene has excellent mechanical, electronic, optical, and thermal properties, and has great potential application value in the fields of microelectronics, energy storage, catalysis, and biosensors. Due to its unique two-dimensional nanostructure, composite materials added with graphene often have excellent properties. For example, the literature (Chem.Soc.Rev.2012, 41, 666-686) introduces a large number of applications of graphene composites. [0003] Manganese dioxide has attracted much attention due to its low price, abundant resources, environmental friendliness, convenient production, and excellent chemical and electrochemical stability. ...

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): C01B31/04C01G45/02C01B32/19C01B32/194
Inventor 张全生李硕夏骥闵凡奇郭东莉
Owner SHANGHAI INST OF 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