Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method of graphene conductive paste

A conductive paste, graphene technology, applied in graphene, chemical instruments and methods, cable/conductor manufacturing, etc., can solve the problems of easy agglomeration, stacking and even precipitation of conductive pastes

Active Publication Date: 2019-12-20
济南三川新材料科技有限公司
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problem that the conductive agent graphene conductive paste is easy to agglomerate, stack or even precipitate, the invention provides a preparation method of graphene conductive paste

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 conductive paste
  • Preparation method of graphene conductive paste
  • Preparation method of graphene conductive paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The present embodiment provides a kind of preparation method of the graphene conductive paste of water system, its steps are as follows figure 1 As shown, including steps S101 to S105:

[0054] S101: adding alcohols to the first microbubble water to obtain a mixed solution;

[0055] S102: adding raw materials with a graphite sheet structure into the mixed solution to obtain a first suspension;

[0056] S103: subject the first suspension to high-speed mechanical shearing and / or ultrasonic liquid phase exfoliation to obtain a second suspension, wherein high-speed mechanical shearing and ultrasonic liquid phase exfoliation are used to exfoliate the graphite sheet structure in the raw material to obtain Graphene, graphene is dispersed in the second suspension;

[0057] S104: After the second suspension is vacuum-filtered and cleaned by suction, a black slurry-like filter material is obtained, and the filter material contains graphene;

[0058] S105: adding the filter mat...

Embodiment 2

[0062] This embodiment provides a method for preparing a water-based graphene conductive paste, including steps 1) to 6):

[0063] Step 1) Add ethanol and isopropanol with a volume fraction of 0.5% and 5% respectively in 1L of microbubble water to obtain a mixed solution;

[0064] Step 2) Add 0.5g of natural graphite as raw material to the mixed solution, stir and mix to obtain the first suspension;

[0065] Step 3) Perform high-speed mechanical shearing on the obtained first suspension, wherein the rotor speed is set at 21000 rpm, and shear for 10 minutes to obtain an intermediate suspension;

[0066] Step 4) Place the intermediate suspension obtained in step 3) in a water-bath ultrasonic equipment for ultrasonic liquid phase stripping, set the ultrasonic power to 1000W, and the ultrasonic time to 60min to obtain the second suspension;

[0067] Step 5) Put the second suspension into a Buchner funnel for vacuum filtration, and obtain a black slurry-like filter material in the...

Embodiment 3

[0071] This embodiment provides a method for preparing a water-based graphene conductive paste, including steps 1) to 6):

[0072] Step 1) Add 0.5% isopropanol, 5% tert-butanol and 10% isobutanol by volume to 1L of fine bubble water to obtain a mixed solution;

[0073] Step 2) Add 15g of artificial graphite as raw material to the mixed solution, stir and mix to obtain the first suspension;

[0074] Step 3) Perform high-speed mechanical shearing on the obtained first suspension, wherein the rotor speed is set at 10,000 rpm, and shear for 60 minutes to obtain an intermediate suspension;

[0075] Step 4) Place the intermediate suspension in a water-bath ultrasonic equipment for ultrasonic liquid phase stripping, set the ultrasonic power to 20,000W, and ultrasonic time to 1min to obtain the second suspension;

[0076] Step 5) Put the second suspension into the Buchner funnel for vacuum suction filtration, after suction filtration, obtain a black slurry-like filter material in the...

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
Particle sizeaaaaaaaaaa
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a graphene conductive paste. The method comprises the following steps: adding an alcohol into fine bubble water to obtain a mixed solution; adding a rawmaterial with a graphite sheet structure into the mixed solution to obtain a first suspension liquid; performing high-speed mechanical shearing and / or ultrasonic liquid phase peeling on the suspension liquid to obtain a second suspension liquid, wherein graphene is dispersed in the second suspension liquid; performing vacuum filtration on the second suspension liquid and performing suction filtration and washing to obtain a filtered material, wherein the filtered material contains graphene; and adding the filtered material into fine bubble water and performing stirring treatment and / or ultrasonic mixing treatment to obtain the water-system graphene conductive paste in which graphene is uniformly dispersed. The preparation method of the graphene conductive paste is simple and feasible, theobtained graphene can be uniformly and stably dispersed in the conductive paste, and thereby the effect of not using a dispersant or an additive, or using the dispersant or the additive in a very small amount is achieved.

Description

technical field [0001] The invention belongs to the field of conductive materials, and in particular relates to a preparation method of graphene conductive paste. Background technique [0002] Graphene has the characteristics of ultra-high conductivity, ultra-thin two-dimensional, high chemical stability, etc., and is widely favored in the application of battery conductive paste. The type of battery can be divided into aqueous battery and organic battery according to the solvent of its electrolyte. Aqueous batteries include lead-acid batteries, zinc-nickel batteries, nickel-metal hydride batteries, nickel-iron batteries, etc. Organic batteries include lithium-ion batteries, sodium-ion batteries, lithium-sulfur batteries, etc. When graphene is used in the preparation process of electrodes, graphene and active materials can be contacted by "surface-point", which greatly improves the conductivity of the entire electrode. Moreover, graphene has a lower conductive threshold, wh...

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): C01B32/19C01B32/194H01B1/04H01B13/00H01M4/62
CPCC01B2204/04C01B32/19C01B32/194H01B1/04H01B13/00H01M4/625Y02E60/10
Inventor 杨树斌
Owner 济南三川新材料科技有限公司
Features
  • R&D
  • 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