A kind of preparation method and application of functionalized graphene ORR catalyst

A technology of sulfurized graphene and catalyst, which is applied in the direction of fuel cell half-cells and primary battery-type half-cells, active material electrodes, structural parts, etc., which can solve the problem of limiting the wide application of fuel cells, increasing the cost of fuel cells, and the price of platinum Expensive and other problems, to achieve the effect of improving electrocatalytic performance, low price, and simple preparation method

Active Publication Date: 2021-09-28
JIANGSU UNIV OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalysts can increase the rate of chemical reactions, but the selection of their materials inhibits the development of fuel cells. So far, platinum is still the main material for catalysts. Due to the high price of platinum and the lack of resources, the cost of fuel cells has been increased. Ultimately limiting the widespread application of fuel cells

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 preparation method and application of functionalized graphene ORR catalyst
  • A kind of preparation method and application of functionalized graphene ORR catalyst
  • A kind of preparation method and application of functionalized graphene ORR catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method for functionalized graphene ORR catalyst, comprising the steps of:

[0038] S1, synthesis of graphene sulfide:

[0039] Under the protection of an inert gas, dissolve 0.3g of graphene oxide and 1.5g of Lawson's reagent in 60.0mL of toluene, then stir at 120°C for 5 hours, cool to room temperature after stirring, then pour off the toluene, and then Wash with methanol, centrifuge to remove Lawson's reagent after washing, and then dry to obtain 0.20 g of graphene sulfide (for black powder);

[0040] S2, synthesis of graphene sulfide modified by alkyl branch:

[0041] Dissolve 140mg of graphene sulfide in 50mL of tetrahydrofuran and sonicate for 30 minutes, then add 0.6g of potassium carbonate and stir at room temperature for 1 hour, after the reaction, add 1mL of 1-bromooctane and stir at 80°C React for 12 hours, cool to room temperature after the reaction is completed, then remove tetrahydrofuran by rotary evaporation under reduced pressure, wash wi...

Embodiment 2

[0048] A preparation method for functionalized graphene ORR catalyst, comprising the steps of:

[0049] S1, synthesis of graphene sulfide:

[0050] Under the protection of an inert gas, dissolve 0.3 g of graphene oxide and 3.0 g of Lawson’s reagent in 100.0 mL of acetone, then stir at 110 ° C for 4 hours, cool to room temperature after stirring, then pour off the acetone, and then Use dichloromethane to wash, and after washing, centrifuge to remove Lawson's reagent, and then dry to obtain 0.23g of graphene sulfide (for black powder);

[0051] S2, synthesis of graphene sulfide modified by alkyl branch:

[0052] Dissolve 140mg of graphene sulfide in 100mL of toluene and sonicate for 15 minutes, then add 1.0g of sodium carbonate and stir at room temperature for 2 hours. After the reaction, add 2mL of 1-chlorooctane and stir at 60°C React for 10 hours, cool to room temperature after the reaction is completed, then remove the toluene by rotary evaporation under reduced pressure, ...

Embodiment 3

[0059] A preparation method for functionalized graphene ORR catalyst, comprising the steps of:

[0060] S1, synthesis of graphene sulfide:

[0061] Under the protection of an inert gas, dissolve 0.3 g of graphene oxide and 6.0 g of Lawson’s reagent in 100.0 mL of tetrahydrofuran, then stir at 100 ° C for 6 hours, cool to room temperature after stirring, then pour off tetrahydrofuran, and then Wash with toluene, centrifuge to remove Lawson's reagent after washing, and then dry to obtain 0.25g of graphene sulfide (for black powder);

[0062] S2, synthesis of graphene sulfide modified by alkyl branch:

[0063] Dissolve 140 mg of graphene sulfide in 80 mL of acetone and sonicate for 40 minutes, then add 1.0 g of potassium phosphate and stir the reaction at room temperature for 3 hours, after the reaction, add 2.5 mL of 1-bromohexane, at 100 ° C Stir the reaction for 8 hours, cool to room temperature after the reaction is completed, then remove the acetone by rotary evaporation u...

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 and application of a functionalized graphene ORR catalyst. Including: S1 synthesis of graphene sulfide; S2 synthesis of alkyl branched modified graphene sulfide; S3 synthesis of metalloporphyrin; S4 synthesis of functionalized graphene ORR catalyst. Application: Functionalized graphene ORR catalysts for cathodic oxygen reduction reactions in metal-air batteries and dye batteries. The functionalized graphene ORR catalyst prepared by the invention has good electrical conductivity, high initial potential, effectively reduces the overpotential of oxygen reduction, and its catalytic performance can be comparable to that of commercial Pt / C. The catalyst is used to assemble the liquid electrolyte zinc-air Battery, the open circuit voltage, maximum power density and constant current discharge time of the battery are better than commercial Pt / C; the preparation method of the present invention is simple, the preparation cost is low, and the repeatability is good, which is beneficial to the development of new electrochemical catalysts and energy conversion and Storage devices have important theoretical and practical significance.

Description

technical field [0001] The invention relates to new energy material technology and the field of electrochemical catalysis, in particular to a preparation method and application of a functionalized graphene ORR catalyst. Background technique [0002] At present, fossil energy is increasingly scarce, and the development of new energy is imminent. Fuel cells are considered to be the most promising power generation devices in the 21st century because of their high energy conversion efficiency, low environmental pollution, and strong reliability. Catalysts can increase the rate of chemical reactions, but the selection of their materials inhibits the development of fuel cells. So far, platinum is still the main material for catalysts. Due to the high price of platinum and the lack of resources, the cost of fuel cells has been increased. Ultimately, the widespread application of fuel cells is limited. Therefore, reducing the amount of noble metals used in catalysts, seeking cheap ...

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): H01M4/88H01M4/90H01M12/06
CPCH01M4/8825H01M4/90H01M4/9008H01M4/9083H01M12/06H01M2004/028Y02E60/10
Inventor 贾海浪顾磊赵姣彭智杰孙选龙包政律龚炳泉李珊珊关明云
Owner JIANGSU UNIV 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