Supercharge Your Innovation With Domain-Expert AI Agents!

Hollow microspheres of metal-organic framework compounds loaded with iron-cobalt sulfide

A metal-organic framework and sulfide technology, applied in structural parts, electrical components, battery electrodes, etc., can solve the problems of expensive Pt catalysts and slow cathode reaction kinetics

Active Publication Date: 2021-08-10
YANGTZE UNIVERSITY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the kinetic process of the cathode reaction is extremely slow, and the current commercial Pt catalyst is expensive, which has become one of the bottlenecks for the large-scale use 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
  • Hollow microspheres of metal-organic framework compounds loaded with iron-cobalt sulfide
  • Hollow microspheres of metal-organic framework compounds loaded with iron-cobalt sulfide
  • Hollow microspheres of metal-organic framework compounds loaded with iron-cobalt sulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] PS microspheres can be purchased directly or prepared by yourself. This example will provide a preparation method of PS microspheres, of course, the preparation method of PS microspheres is not limited to this.

[0061] The steps of PS microspheres in the present embodiment are as follows:

[0062] (1) Dissolve 0.3 g of SDS in 180 ml of deionized water to obtain an SDS solution, place the SDS solution in a three-necked flask, and pass nitrogen through the SDS solution to remove the polymerization inhibitor in the SDS.

[0063] (2) The temperature of the SDS solution in the three-necked bottle was raised to 80°C, and under reflux, the KPS aqueous solution was quickly dropped into the three-necked bottle, and the reaction was continued for 15 minutes. The KPS aqueous solution dropped was obtained by adding 0.3 g of KPS to 15 ml of deionized water.

[0064] (3) Slowly add the mixture of styrene monomer and n-butanol dropwise into the three-necked flask, and react for 30 m...

Embodiment 2

[0075] This example will provide a synthesis example of MOF derivative 1-1-ZIF@PS, the steps are as follows:

[0076] (1) In a three-neck flask, disperse 0.27g of PS microspheres in 5ml of deionized water and 20ml of ethanol, control the temperature at 30°C, and mechanically stir until uniformly dispersed. The resulting dispersion is designated as dispersion A.

[0077] (2) 0.78g of FeCl 3 and 1.142g of CoCl 2 ·6H 2 O was uniformly dispersed in 15ml of ethanol, and the resulting dispersion was designated as dispersion B.

[0078] (3) 2.362 g of 2-methylimidazole was dissolved in 25 ml of ethanol, and the resulting solution was designated as solution C. 2-Methylimidazole is used to provide organic ligands for the synthesis of metal framework compounds.

[0079] (4) Slowly add the dispersion B to the dispersion A, the mixture in the three-necked bottle quickly turns brownish blue, and stir the mixture vigorously for 30 minutes.

[0080] (5) Add solution C into the three-nec...

Embodiment 3

[0083] This example will provide a synthesis example of MOF derivative 1-2-ZIF@PS, the steps are as follows:

[0084] (1) In a three-necked flask, disperse 1.08 g of PS microspheres in 10 ml of deionized water and 50 ml of ethanol, control the temperature at 30°C, and mechanically stir until uniformly dispersed. The resulting dispersion is designated as dispersion A.

[0085] (2) 1.04g of FeCl 3 and 3.05g of CoCl 2 ·6H 2 O was evenly dispersed in 45ml of ethanol, and the resulting dispersion was designated as dispersion B.

[0086] (3) 9.448 g of 2-methylimidazole was dissolved in 80 ml of ethanol, and the resulting solution was designated as solution C.

[0087] (4) Slowly add the dispersion B to the dispersion A, the mixture in the three-necked bottle quickly turns brownish blue, and stir the mixture vigorously for 30 minutes.

[0088] (5) Add solution C into the three-necked bottle at one time, at this time, the mixed solution in the three-necked bottle quickly turns br...

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
areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a metal-organic framework compound hollow microsphere loaded with iron-cobalt sulfide. The preparation method comprises: (1) providing polystyrene nano-microspheres; (2) loading Fe on the polystyrene nano-microspheres , Co is the MOF derivative with metal ion center, that is, the precursor; (3) Carry out high-temperature carbonization on the calcination of the precursor to remove polystyrene nanospheres; (4) Do sulfur doping on the carbonized product. The present invention uses Fe and Co as metal ion centers and MOF derivatives wrapped on polystyrene nanospheres as precursors, and then modifies the MOF structure by sulfur atom doping. The obtained hollow microsphere has a large specific surface and high reactive attachment sites, thereby enhancing the transmission of electrons and reduction products, and can be used as an oxygen reduction catalyst.

Description

technical field [0001] The invention belongs to the technical field of synthesis of metal organic framework compound (MOF) derivatives, in particular to a metal organic framework compound hollow microsphere loaded with iron cobalt sulfide, which can be applied to fuel cell ORR catalysts. Background technique [0002] A fuel cell is an environmentally friendly and efficient new energy source, which consists of two half-reactions of fuel oxidation at the anode and oxygen reduction at the cathode. The oxidation reaction rate is far greater than the reduction reaction rate, so it is particularly important to increase the oxygen reduction reaction rate at the cathode. However, the kinetic process of the cathode reaction is extremely slow, and the current commercial Pt catalyst is expensive, which has become one of the bottlenecks for the large-scale use of fuel cells. Studies have shown that the Pt catalyst used in the fuel cell cathode accounts for about 40% of the battery cost...

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): H01M4/90
CPCY02E60/50
Inventor 韩午丽王凯佩高宇
Owner YANGTZE UNIVERSITY
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