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

Preparation method of three-dimensional ordered mesoporous MOF material

A three-dimensional ordered, mesoporous technology, applied in the field of material chemistry, can solve the problems of electrode material crushing, low charge-discharge specific capacity, poor cycle stability, etc., and achieve the effect of promoting transfer and overcoming low charge-discharge specific capacity.

Active Publication Date: 2019-12-20
INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing a three-dimensional ordered mesoporous MOF material, which overcomes the problems of low charge-discharge specific capacity, poor cycle stability, and pulverization of the electrode material prepared by the prior art. defect

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 three-dimensional ordered mesoporous MOF material
  • Preparation method of three-dimensional ordered mesoporous MOF material
  • Preparation method of three-dimensional ordered mesoporous MOF material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step A: preparing polystyrene PS microspheres;

[0038] Add 10 g of styrene and 10 g of polyvinylpyrrolidone into 50 ml of deionized water, stir for 2 hours, then stir for 2 hours in an oil bath in a round bottom flask, the temperature of the oil bath is 70°C, and magnetically stir for 12 hours. Then centrifuge at a speed of 800 rad / min for 3 times, and dry at 60° C. to obtain polystyrene PS spheres.

[0039] Step B: Preparation of 3D ordered mesoporous ZIF8 material

[0040] B1, liquid A: 5mmol zinc nitrate hexahydrate, dispersed in 125ml methanol, liquid B: 20mmol 2-methylimidazole, dispersed in 125ml methanol; pour liquid B into liquid A, and at the same time, add 1g of PS balls in step A Among them, magnetically stir for 3 minutes until uniform, and seal and age for 24 hours.

[0041] B2, after centrifugation, methanol and ethanol were used as solvents, and washed three times respectively; after drying the solid and liquid at 60°C, a 3Dzif8 material with an ordere...

Embodiment 2

[0048] Step A, preparing polystyrene PS microspheres:

[0049] Add 20 g of styrene and 20 g of polyvinylpyrrolidone into 100 ml of deionized water, stir for 5 hours, then stir for 2 hours in an oil bath in a round bottom flask, the temperature of the oil bath is 80°C, and stir for 24 hours. Then centrifuge at 800rad / min for 3 times and dry at 80°C to obtain PS spheres.

[0050] Step B: Preparation of three-dimensional ordered mesoporous zif8 material:

[0051] B1, liquid A: 10mmol zinc nitrate hexahydrate, dispersed in 250ml methanol, liquid B: 40mmol 2-methylimidazole, dispersed in 250ml methanol; pour liquid B into liquid A, and at the same time, add 2g of PS balls in step A to it , stirred for 5 minutes until uniform, sealed and aged for 24 hours.

[0052] B2, after centrifugation, methanol and ethanol were used as solvents, and washed three times respectively; after drying the solid and liquid at 80°C, a 3Dzif8 material with an ordered mesoporous structure was obtained. ...

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 relates to a preparation method of a three-dimensional ordered mesoporous MOF material. The preparation method comprises the following steps of: the step A, preparing polystyrene PS microspheres; the step B, preparing a three-dimensional ordered mesoporous zif8 material; B1, dispersing a proper amount of zinc nitrate hexahydrate into methanol to obtain a solution A, dispersing a proper amount of 2-methylimidazole into methanol to obtain a solution B, adding the solution B into the solution A, adding 1-2g of PS microspheres obtained in the step A for uniform stirring, sealing, standing and aging; B2, sequentially adopting methanol and ethanol as solvents after centrifuging, and respectively washing for three times; drying the solid and liquid to obtain a 3Dzif8 material with an ordered mesoporous structure; the step C, carbonizing the 3Dzif8 material; putting the 3Dzif8 material in the step B2 into a tubular furnace, performing carbonizing at a high temperature in Ar / H2 mixed gas, and performing cooling to a room temperature to obtain the CNT-3Dzif8. According to the preparation method, the 3D ordered zif8 material is prepared by adoption of a template method, and thethree-dimensional ordered ZnS material is prepared after carbonization, so that the electrochemical performance of the lithium ion battery is improved.

Description

technical field [0001] The invention relates to the technical field of material chemistry, and relates to a method for preparing a high specific capacity lithium-ion battery negative electrode material, in particular to a method for compounding a three-dimensional ordered mesoporous MOF material as a lithium-ion battery negative electrode material. Background technique [0002] Lithium-ion batteries are the latest generation of storage batteries, which have been widely used in people's production and life, and are widely used in portable electronic mobile devices and large-scale electric energy storage devices. Like the traditional batteries we see in our daily life, they are composed of positive electrodes, electrolytes, negative electrodes and other components. During discharge, Li + From the positive electrode, the electrolyte reaches the opposite electrode, and the electrons reach the negative electrode through the external circuit; the charging process Li + Then it mo...

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): H01M4/36H01M4/38H01M4/485H01M4/60H01M10/0525
CPCH01M4/602H01M4/364H01M4/485H01M4/38H01M10/0525H01M2004/027Y02E60/10
Inventor 张永光张俊凡
Owner INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL 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