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

A kind of polyatomic co-doped graphene, preparation method and application

A graphene and co-doping technology, applied in graphene, chemical instruments and methods, structural parts, etc., can solve problems such as complex processes, and achieve clean preparation process, good stability and cycle performance, and high repeatability. Effect

Active Publication Date: 2022-06-21
DONGHUA UNIV
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve the technical problem of the complex process of the existing multi-component heteroatom effective doping method on the graphene surface

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
  • A kind of polyatomic co-doped graphene, preparation method and application
  • A kind of polyatomic co-doped graphene, preparation method and application
  • A kind of polyatomic co-doped graphene, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of polyatomic co-doped graphene (NSP-Graphene) with ORR / OER bifunctional catalytic activity (the process is as follows: figure 1 shown), the steps are as follows:

[0036] Step 1: Weigh 4g of thiourea into 5mL of deionized water, stir magnetically until the thiourea is completely dissolved to obtain a thiourea solution;

[0037] Step 2: put 0.05g graphene and the thiourea solution in step 1 into the ball mill jar, select 6 times of the zirconia balls with a diameter of 3 mm compared to the total weight of graphene and thiourea, and install the ball mill jar;

[0038] Step 3: set the ball milling speed (250rpm) and the ball milling time (30min), and carry out ball milling treatment to graphene and thiourea;

[0039]Step 4: freeze-dry the ball-milled mixture obtained in step 3, freeze-drying time 12h, and finally obtain a dry powder sample of graphene and thiourea;

[0040] Step 5: Place the dried powder sample in step 4 and disodium hydrogen phosph...

Embodiment 2

[0042] A preparation method of polyatomic co-doped graphene (NSP-Graphene) with ORR / OER bifunctional catalytic activity (the process is as follows: figure 1 shown), the steps are as follows:

[0043] Step 1: Put 0.05g of graphene and a small amount of deionized water into the ball mill jar, select 6 times the total weight of the graphene and select zirconia balls with a diameter of 3mm, and install the ball mill jar;

[0044] Step 2: set the ball milling speed (250rpm) and the ball milling time (30min), and carry out ball milling treatment to graphene;

[0045] Step 3: freeze-dry the ball-milled mixture obtained in step 2, freeze-drying time 12h, and finally obtain a dry powder sample of graphene;

[0046] Step 4: Place the dried powder sample in step 3 and disodium hydrogen phosphate in an atmosphere furnace, wherein disodium hydrogen phosphate is placed in front of the airflow, and its mass is 8 times that of the powder sample. Under nitrogen, the temperature was increased...

Embodiment 3

[0048] A preparation method of polyatomic co-doped graphene (NSP-Graphene) with ORR / OER bifunctional catalytic activity (the process is as follows: figure 1 shown), the steps are as follows:

[0049] Step 1: Weigh 4 g of thiourea, add it into 5 mL of deionized water, and stir magnetically until the thiourea is completely dissolved to obtain a thiourea solution;

[0050] Step 2: put 0.05g graphene and the thiourea solution in step 1 into the ball mill jar, select 6 times of the zirconia balls with a diameter of 3 mm compared to the total weight of graphene and thiourea, and install the ball mill jar;

[0051] Step 3: set the ball milling speed (250rpm) and the ball milling time (30min), and carry out ball milling treatment to graphene and thiourea;

[0052] Step 4: freeze-dry the ball-milled mixture obtained in step 3, freeze-drying time 12h, and finally obtain a dry powder sample of graphene and thiourea;

[0053] Step 5: Place the dried powder sample of Step 4 in an atmosph...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a polyatomic co-doped graphene, a preparation method and an application thereof in an air electrode catalyst of a zinc-air battery. The preparation method is as follows: adding the precursors of the nitrogen source and the sulfur source into deionized water, stirring until completely dissolved to obtain a precursor solution; adding the precursor solution and graphene into a ball mill jar for ball milling to obtain a ball mill mixture; ball milling The mixture is freeze-dried to obtain a mixed powder of graphene and thiourea; the mixed powder of graphene and thiourea is subjected to in-situ phosphating treatment under nitrogen conditions to obtain nitrogen, sulfur and phosphorus co-doped graphene. The invention uses mechanical force to generate defective graphene and realize uniform mixing of precursors—in-situ phosphating to obtain ternary co-doped graphene of nitrogen, sulfur and phosphorus, and the polyatom-doped carbon-based catalyst exhibits good electrocatalysis Oxygen reduction / oxygen evolution performance.

Description

technical field [0001] The invention relates to a polyatomic co-doped graphene, a preparation method and application, and belongs to the technical field of preparation and application of carbon-based nonmetal electrocatalysts. Background technique [0002] In today's world, with the shortage of resources and the sharp increase in the demand for new energy technologies, sustainable energy conversion and storage technologies have attracted widespread attention. Among them, the metal-air battery is due to its environmental friendliness and high theoretical energy density (1084Wh kg -1 ) and other advantages to become one of the important energy technologies. For rechargeable zinc-air batteries, the kinetically slow oxygen reduction and oxygen evolution reactions are the keys to determining the battery performance. The current high-efficiency oxygen electrode catalysts mainly rely on noble metals such as Pt and Ir, and their high cost and low reserves limit the development and...

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 Patents(China)
IPC IPC(8): C01B32/194H01M4/96H01M12/08
CPCC01B32/194H01M4/96H01M12/08C01B2204/22
Inventor 乔锦丽王永霞蔡冬青李露露何瑞楠李君娄文双刘佩璇
Owner DONGHUA UNIV
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