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

Preparation method and application of a nano flower spherical cobalt disulfide composite material

A cobalt disulfide, composite material technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of complex preparation process, poor long cycle performance of batteries, etc., and achieves simple preparation method, Conducive to exchange and transfer, high efficiency

Active Publication Date: 2021-03-09
UNIV OF SCI & TECH OF CHINA
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Based on the existing patents and literature, it can be seen that the current anode materials for cobalt disulfide sodium ion batteries have problems such as complex preparation procedures and poor long-term battery cycle performance.

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 and application of a nano flower spherical cobalt disulfide composite material
  • Preparation method and application of a nano flower spherical cobalt disulfide composite material
  • Preparation method and application of a nano flower spherical cobalt disulfide composite material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The invention provides a preparation method of a nano flower spherical cobalt disulfide composite material, comprising: S1) mixing an organic acid cobalt salt, an organic sulfur source and a glycol solvent, and obtaining an intermediate product after a hydrothermal reaction; the organic The sulfur source contains amino groups; S2) The intermediate product is mixed with sulfur powder, and annealed in a protective atmosphere to obtain a nano flower spherical cobalt disulfide composite material.

[0034] see figure 1 , figure 1 It is a schematic diagram of the synthesis of the nanoflower spherical cobalt disulfide composite material provided by the present invention, which utilizes hydrothermal reaction self-assembly to form the nanoflower spherical cobalt disulfide composite material.

[0035] The preparation method of the invention is simple, the cycle is short and the efficiency is high. In this method, only one step of hydrothermal self-assembly is required to form the...

Embodiment 1

[0051] Mix 3.0g of cobalt oxalate tetrahydrate and 1.04g of thiourea into a beaker filled with 70ml of ethylene glycol and stir in a water bath. The temperature of the water bath is 45°C and the stirring time is 15 minutes; The stainless steel reaction kettle was sealed, and then the stainless steel reaction kettle was placed in a blast oven at 180°C and kept at a constant temperature for 12 hours.

[0052] After the reaction, take out the suspension in the reaction kettle, wash it with ethanol, then centrifuge the suspension, set the centrifugal speed to 10000r / min, and the centrifugation time is 20min; put the separated solid precipitate into In a vacuum oven at 50° C., take it out after baking for 10 hours to obtain an intermediate product.

[0053] Take 2g of the intermediate product, mix it with 2g of sulfur powder, and put it into a tube furnace for annealing. The atmosphere in the tube furnace is argon, the heating rate of the annealing treatment is 5°C / min, the holdin...

Embodiment 2

[0057] Take 3.0g of cobalt oxalate tetrahydrate and 1.04g of thiourea and mix them into a beaker filled with 50ml of ethylene glycol for stirring in a water bath. The temperature of the water bath is 45°C and the stirring time is 15 minutes. Pour the homogeneous solution after mixing and dissolving into a stainless steel reaction kettle and seal it, then put the stainless steel reaction kettle into a blast oven at 180°C, and place it at a constant temperature for 6h.

[0058] After the reaction, the suspension in the reactor was taken out, washed twice with water, and then washed twice with ethanol. The suspension was centrifuged, the centrifugation speed was set to 10000r / min, and the centrifugation time was 20min. The separated solid precipitate was put into a vacuum oven at 50° C., baked for 10 h, and then taken out to obtain an intermediate product.

[0059] Take 2g of the intermediate product, mix it with 3g of sulfur powder, and put it into a tube furnace for annealing....

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a nano flower spherical cobalt disulfide composite material, comprising: S1) mixing an organic acid cobalt salt, an organic sulfur source and a glycol solvent, and obtaining an intermediate product after a hydrothermal reaction; the organic The sulfur source contains amino groups; S2) The intermediate product is mixed with sulfur powder, and annealed in a protective atmosphere to obtain a nano flower spherical cobalt disulfide composite material. Compared with the prior art, the preparation method of the present invention is simple, the cycle is short, and the efficiency is high, and the wrinkled cobalt disulfide nanosheet has a large specific surface area, which is beneficial to the exchange and transfer of sodium ions and electrons, and is also beneficial to electrolysis The infiltration of liquid can enhance the electrochemical performance of the composite material. At the same time, the nitrogen-doped carbon layer on the surface can enhance the conductivity of cobalt disulfide, and can also provide a protective layer when cobalt disulfide electrochemically reacts, buffering cobalt disulfide. The internal stress generated by the volume change is conducive to its structural stability and enhances the structural strength of the composite material.

Description

technical field [0001] The invention belongs to the technical field of sodium ion batteries, and in particular relates to a nano flower spherical cobalt disulfide composite material and a preparation method thereof. Background technique [0002] With the rapid development of portable electronic devices and electric vehicles, there is an increasing demand for high-energy-density battery devices, and higher requirements are placed on the energy storage performance per unit mass of batteries. Among them, sodium-ion battery energy storage technology is considered to be the most potential alternative energy storage device for lithium-ion batteries. [0003] Compared with the scarce reserves of lithium-containing ore in lithium-ion batteries and the rising high prices, the cost of raw materials for sodium-ion batteries is lower, and the natural reserves of raw material sodium salts are very rich and come from a wide range of sources. Therefore, sodium-ion battery technology has be...

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): H01M4/36H01M4/58H01M4/62H01M10/054B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/366H01M4/5815H01M4/625H01M4/628H01M10/054Y02E60/10
Inventor 张和平潘月磊程旭东龚伦伦
Owner UNIV OF SCI & TECH OF CHINA
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