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

Graphene, graphene electrode, graphene supercapacitor and preparation method thereof

A graphene electrode and supercapacitor technology, which is applied to the preparation of electronic components, the preparation of graphene electrodes and graphene supercapacitors, and the field of graphene, can solve problems such as high cost, high energy consumption, and difficulty in mass production.

Active Publication Date: 2014-12-17
NEWNAGY TANGSHAN
View PDF6 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods face some problems in actual mass production: high energy consumption, high cost, and difficulty in mass production.

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, graphene electrode, graphene supercapacitor and preparation method thereof
  • Graphene, graphene electrode, graphene supercapacitor and preparation method thereof
  • Graphene, graphene electrode, graphene supercapacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] Such as figure 1 Shown, the preparation method according to the graphene of the embodiment of the present invention comprises the following steps:

[0041] a) Pre-reduction treatment of graphite oxide (step a)

[0042] Regarding the method of pre-reducing the graphite oxide, for example, laser reduction, chemical reduction and the like can be used.

[0043] In some embodiments of the present invention, the graphite oxide and pre-reducing agent water (for example, deionized water) are configured into a mixed liquid, so as to pre-reduce the graphite oxide.

[0044] Wherein, the graphite oxide may be a commercially available aqueous dispersion of graphite oxide, of course, it may also be prepared according to a conventional preparation method.

[0045]The amount of the pre-reducing agent is designed according to the content of the graphite oxide, for example, the mass ratio of the pre-reducing agent to the graphite oxide may be pre-reducing agent:graphite oxide=0.1-0.75....

Embodiment 1

[0081] First, prepare a mixture of graphite oxide / vitamin C (pre-reducing agent). Among them, in the mixed solution, the mass ratio of vitamin C to graphite oxide is 1:3. And relative to graphite oxide, add 2wt% dispersant.

[0082] Next, the mixed solution was ultrasonically dispersed for 2 minutes, the mixed solution was coated on a PET film with a thickness of 180 um, and dried naturally at room temperature for 15 hours.

[0083] Thereafter, according to the following steps, a graphene electrode with an interdigitated shape is formed through laser reduction.

[0084] 1. Install Nero software on the working machine.

[0085] 2. Use Nero Cover Designer software to design the appearance shape of the graphene electrode as an interdigitated shape (such as figure 2 The shown A1 and A2 respectively represent the positive and negative graphene electrodes), and set the irradiation parameters such as grayscale and printing contrast.

[0086] 3. Paste the substrate with the pre-r...

Embodiment 2

[0095] Below, refer to Figure 2 ~ Figure 4 A graphene supercapacitor 100 according to Embodiment 2 of the present invention is described.

[0096] Such as image 3 As shown, the graphene supercapacitor 100 includes: a housing (not shown); graphene electrode LSG (that is, the graphene electrode obtained in Example 1); collector electrodes M1, M2; package E, and electrolyte solution (not shown in the figure) Show).

[0097] Wherein, the substrate of the graphene electrode is a PET film (P shown in the figure); the collectors M1 and M2 are copper tapes, which are the collectors of the graphene electrode LSG; the graphene electrode LSG is the graphene electrode obtained in Example 1 , which is formed into an interdigitated shape, and the graphite oxide B between the positive and negative graphene electrodes A1 and A2 of the interdigitated shape naturally isolates the electrodes in space (such as figure 2 shown), thereby omitting the diaphragm part of the conventional supercap...

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

Disclosed are a graphene, a graphene electrode, a graphene super capacitor and preparation methods thereof. The preparation method of the graphene comprises the following steps: a) prereducing graphite oxide; b) setting the prereduced graphite oxide on a substrate; and c) laser-reducing the substrate having the graphite oxide set thereon to form graphene. According to the preparation method of graphene in the embodiment of the present invention, the prereduced graphite oxide can be reduced more easily into graphene via laser-reducing, since the graphite oxide has been prereduced in a certain degree prior to the laser reduction (namely, full reduction). The reducing effect of graphene obtained from the prereduced graphite oxide film after one photoetching is evidently superior to that of the graphene prepared without prereduction treatment. Therefore, the time of laser reduction can be apparently decreased and the production efficiency can be improved in the present invention.

Description

technical field [0001] The invention relates to the field of preparation of electronic components, in particular to the technical field of preparation of graphene, graphene electrodes and graphene supercapacitors. Background technique [0002] Energy is the basis of human existence. Due to the depletion of petrochemical energy, the energy crisis has become a problem faced by all countries in the world today, and the sustainable development of the global economy and society is facing severe challenges. The energy crisis includes energy storage, conversion, transmission and the development of energetic materials. Among them, energy storage plays an important role in human development. [0003] With the improvement of people's living standards, the continuous development and utilization of green energy has become a focus of attention. Among them, the supercapacitor is a new type of green energy storage device, the energy density is dozens of times that of the traditional capa...

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): C01B31/04H01G11/36H01G11/86
CPCH01G11/86C01B32/184H01G11/36Y02E60/13
Inventor 郝立星马贺然郎佳星
Owner NEWNAGY TANGSHAN
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