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

Cobalt sulfide preparation method

A technology of cobalt sulfide and thiourea, applied in chemical instruments and methods, inorganic chemistry, cobalt compounds, etc., can solve the problems of difficult operation, high energy consumption, high cost, and achieve good charge-discharge performance, high specific surface area, and excellent capacitance. Effects of Features

Inactive Publication Date: 2013-07-24
ZHEJIANG SCI-TECH UNIV
View PDF2 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the traditional synthesis process, semiconductor transition metal sulfides are realized by solid-state reaction, but this method has its shortcomings. Solid-state reaction generally refers to high-temperature solid-state reaction, so it is difficult to operate, high in cost, and high in energy consumption. , are increasingly unsuitable for the requirements of sustainable social development

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
  • Cobalt sulfide preparation method
  • Cobalt sulfide preparation method
  • Cobalt sulfide preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The preparation method of cobalt sulfide of the present invention, step is as follows:

[0017] Dissolve 1.72mmol cobalt nitrate and 1.31mmol thiourea in the solvent, seal it in a 25mL stainless steel autoclave lined with polytetrafluoroethylene, react at 160°C for 24h, then cool it to room temperature, and take out the precipitate , washed twice with deionized water and absolute ethanol, and finally dried the product at 60°C for 24 hours to obtain cobalt sulfide with a hollow structure. The solvent is composed of a mixture of n-propanol and water in a volume ratio of 1:1, or a mixture of methanol and water in a volume ratio of 1:1, or a mixture of hydrogen peroxide and water in a volume ratio of 3:7.

[0018] Attached below Figure 1-3 Characterization and analysis of materials.

[0019] 1. Use SEM to observe the surface morphology of the CoS hollow structure: use a JSM-5610LV scanning electron microscope to observe the surface morphology of the CoS hollow structure....

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
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a cobalt sulfide preparation method comprising the steps that: 1.72mmol of cobalt nitrate and 1.31mmol of thiourea are dissolved in a solvent; the solution is sealed in a 25mL stainless steel autoclave with a liner of polytetrafluoroethylene; a reaction is carried out for 24h under a temperature of 160 DEG C; a precipitate is fetched, and is washed twice respectively by using deionized water and anhydrous ethanol; and the product is dried for 24h under a temperature of 60 DEG C, such that cobalt sulfide with a hollow structure is obtained. The cobalt sulfide provided by the invention has yarn-ball-shaped, cabbage-shaped, and snowflake-shaped hollow structures, such that the cobalt sulfide has excellent capacitance characteristics and good charge-discharge performance. A maximal capacitor value under a current density of 5mAcm<-2> is 389FG<-1>, and a capacitor value under a current density of 50mAcm<-2> is 277FG<-1>. The cobalt sulfide can be widely applied in super capacitor materials and electrode materials.

Description

technical field [0001] The invention relates to a preparation method of a capacitance material or an electrode material with excellent electrochemical performance, in particular to a preparation method of cobalt sulfide (CoS). Background technique [0002] Self-assembly refers to the process in which basic structural units such as molecules and nanoparticles spontaneously form aggregates that are thermodynamically stable, structurally determined, and special in performance through non-covalent bonds under equilibrium conditions. Atoms are connected by covalent bonds to form molecules, which belongs to traditional molecular chemistry and does not belong to the category defined by self-assembly; self-assembly belongs to supramolecular chemistry based on weak non-covalent bonds between molecules. Organic molecules and other structural units spontaneously associate through non-covalent bonds under certain conditions to form points, lines, monolayers, multilayer films, blocks, ve...

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): C01G51/00
Inventor 陈旭董文钧李梦夏
Owner ZHEJIANG SCI-TECH 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