Functional graphene oxide modified composite gel electrolyte and preparation method thereof

A graphene modification and composite gel technology, which is applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, circuits, etc., can solve the problem of low ion conductivity and achieve the effect of improving electrical performance

Inactive Publication Date: 2013-01-16
NORTHWESTERN POLYTECHNICAL UNIV
View PDF2 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ionic conductivit

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
  • Functional graphene oxide modified composite gel electrolyte and preparation method thereof
  • Functional graphene oxide modified composite gel electrolyte and preparation method thereof
  • Functional graphene oxide modified composite gel electrolyte and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Implementation example 1: the reaction flow diagram is as figure 2 shown.

[0025] Step 1: Preparation of functionalized graphene oxide: 1 part of graphene oxide flake solid prepared by the improved Hummers method is mixed with water to form a suspension of 0.5 mg / ml, and graphite oxide can be obtained after ultrasonically assisted dispersion for 30 minutes Alkene hydrosol. Add 1 part of an aqueous solution of dodecyldimethylbenzyl ammonium chloride, the concentration of which is 30%, and then stir at 25° C. for 20 minutes. Afterwards, filter with a G3 sand core funnel and wash until there is no chloride ion (detected with silver nitrate solution). Dry in an oven at 30°C to obtain a functionalized graphene oxide solid.

[0026] Step 2: Polymer preparation: Ethyl methacrylate homopolymer was prepared by atom transfer radical polymerization. Wherein the number average molecular weight of the homopolymer is 15780.

[0027] Step 3: Preparation of functionalized graphe...

Embodiment 2

[0029] Step 1: Preparation of functionalized graphene oxide: 1 part of graphene oxide flake solid prepared by the improved Hummers method is mixed with water to form a suspension of 0.5 mg / ml, and graphite oxide can be obtained after ultrasonically assisted dispersion for 30 minutes Alkene hydrosol. Add 1 part of an aqueous solution of dodecyldimethylbenzyl ammonium chloride, the concentration of which is 30%, and then stir at 25° C. for 20 minutes. Afterwards, filter with a G3 sand core funnel and wash until there is no chloride ion (detected with silver nitrate solution). Dry in an oven at 30°C to obtain a functionalized graphene oxide solid.

[0030] Step 2: Preparation of polymer: Methyl methacrylate homopolymer was prepared by atom transfer radical polymerization. Wherein the number average molecular weight of the homopolymer is 15000.

[0031] Step 3: Preparation of functionalized graphene oxide modified composite gel electrolyte: 1 part of functionalized graphene oxi...

Embodiment 3

[0033] Step 1: Preparation of functionalized graphene oxide: 1 part of graphene oxide flake solid prepared by the improved Hummers method is mixed with water to form a suspension of 0.5 mg / ml, and graphite oxide can be obtained after ultrasonically assisted dispersion for 30 minutes Alkene hydrosol. Add 1 part of an aqueous solution of dodecyldimethylbenzyl ammonium chloride, the concentration of which is 30%, and then stir at 25° C. for 20 minutes. Afterwards, filter with a G3 sand core funnel and wash until there is no chloride ion (detected with silver nitrate solution). Dry in an oven at 30°C to obtain a functionalized graphene oxide solid.

[0034] Step 2: Preparation of polymer: A block copolymer of ethyl methacrylate and polystyrene was prepared by atom transfer radical polymerization, with a number-average molecular weight of 32860 and a ratio of 1:1 to the first stage.

[0035] Step 3: Preparation of functionalized graphene oxide modified composite gel electrolyte: ...

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
Concentrationaaaaaaaaaa
Login to view more

Abstract

The invention relates to functional graphene oxide modified composite gel electrolyte and a preparation method thereof. The composite gel electrolyte is characterized by comprising the following components in part by weight: 1 part of functional graphene oxide, 300 to 1,000 parts of polymer matrix and 450 to 1,500 parts of LiClO4 propylene carbonate solution, wherein the functional graphene oxide is obtained by performing functional reaction on graphene oxide and dodecyl dimethyl benzyl ammonium chloride. The addition of quaternary ammonium salt is the simplest method for improving the dispersibility of the graphene oxide in an organic solvent, the nano-composite gel electrolyte is prepared by adding the functional graphene oxide into an electrolyte solution, so that the electrical property is further improved; and the functional graphene oxide modified composite gel electrolyte can meet the requirement of lithium ion battery electrolyte on ionic conductivity.

Description

technical field [0001] The invention relates to a functionalized graphene oxide modified composite gel electrolyte and a preparation method thereof, which is a preparation method of functionalized graphene oxide and a preparation method of a gel polymer electrolyte using it as a modifier . Background technique [0002] Graphene and its derivatives are a new class of carbon nanomaterials. They have unique electrical properties and have great application value in the field of lithium-ion batteries. Graphene oxide (GO) is a derivative of graphene. It contains a variety of oxidized groups on the surface. It has excellent dispersibility in strong polar solvents such as water, but poor dispersibility in organic media with low polarity. And its low thermal stability limits its application in organic systems such as polymer gel electrolytes. In order to give full play to its excellent properties, it must be functionalized. [0003] Lauryldimethylbenzylammonium chloride (1227) is...

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): H01M10/0565H01M10/058
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 马晓燕宋颖惠昱晨
Owner NORTHWESTERN POLYTECHNICAL UNIV
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