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

Highly-dispersed nanowire-shaped nickel-cobalt oxide material and highly-dispersed nanowire-shaped nickel-cobalt sulfide material, and preparation methods thereof

A technology of nickel-cobalt oxide and nickel-cobalt sulfide, which is applied in the direction of nickel oxide/nickel hydroxide, nickel sulfide, nanotechnology, etc., can solve the problems of limited diversified dispersion and mixing treatment, high production cost, and poor reproducibility , to achieve high yield, good reproducibility and good dispersion

Active Publication Date: 2019-10-22
SHAANXI UNIV OF SCI & TECH
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This nano-preparation method introduces other substances, such as carbon cloth and nickel mesh, so there are often problems of insufficient yield, poor reproducibility, and high production costs, and this fixed substrate @NiCo 2 o 4 and base @NiCo 2 S 4 Binary materials limit their subsequent diverse dispersion blending with other active substances
Therefore, a method was sought to overcome the NiCo 2 o 4 and NiCo 2 S 4 Insufficient yield, poor reproducibility, and high production costs, and obtained nano-sized NiCo with high dispersion in the solvent for mixing 2 o 4 and NiCo 2 S 4 materials are especially necessary

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
  • Highly-dispersed nanowire-shaped nickel-cobalt oxide material and highly-dispersed nanowire-shaped nickel-cobalt sulfide material, and preparation methods thereof
  • Highly-dispersed nanowire-shaped nickel-cobalt oxide material and highly-dispersed nanowire-shaped nickel-cobalt sulfide material, and preparation methods thereof
  • Highly-dispersed nanowire-shaped nickel-cobalt oxide material and highly-dispersed nanowire-shaped nickel-cobalt sulfide material, and preparation methods thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The invention discloses a method for preparing a highly dispersed nanowire-shaped nickel-cobalt oxide material, wherein the nanowire-shaped nickel-cobalt oxide can be abbreviated as Nanowire-NiCo 2 o 4 , including the following steps,

[0033] Step 1, uniformly disperse carbon spheres, nickel salt, cobalt salt and weak base in deionized water, let stand for 5-100h to make carbon spheres fully absorb nickel ions and cobalt ions to obtain mixed system A;

[0034] Among them, first disperse the carbon spheres in deionized water, stir and disperse evenly, then add nickel salt, cobalt salt and weak base to stir and disperse evenly, to obtain a uniformly dispersed mixed system A, so that the adsorption of carbon spheres can be fully exerted, carbon spheres The average particle size is 200-500nm, the concentration is 0.1-1mol / L, the concentration of nickel salt is 0.001-0.05mol / L, the concentration of cobalt salt is 0.002-0.1mol / L, the concentration of weak base is 0.1-0.3mol...

Embodiment 1

[0044] A Highly Dispersed Nanowire-NiCo 2 o 4 The preparation method of material comprises the following steps,

[0045] Step 1, configure a carbon sphere solution with a concentration of 0.1mol / L, first ultrasonic and cell crushing in an ultrasonic cell pulverizer for 15 minutes, then fully stir and disperse until uniform under ultrasonic, and Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O was added to the carbon sphere solution at a molar ratio of 1:2, stirred and dispersed evenly, then added urea, and left to stand for 24 hours to obtain a uniformly dispersed suspension; the Ni(NO 3 ) 2 ·6H 2 The concentration of O is 0.008mol / L, Co(NO 3 ) 2 ·6H 2 The concentration of O is 0.016mol / L, and the concentration of urea is 0.13mol / L;

[0046] Step 2, transfer the suspension to a 100ml reaction kettle, react at 180°C for 10h, cool the suspension to room temperature naturally, wash with deionized water and ethanol for 3 times and suction filter to remove impurities in the ...

Embodiment 2

[0050] A Highly Dispersed Nanowire-NiCo 2 o 4 The preparation method of material comprises the following steps,

[0051] Step 1, prepare a carbon sphere solution with a concentration of 0.5mol / L, first ultrasonically and finely pulverize in an ultrasonic cell pulverizer for 15 minutes, then fully stir and disperse until uniform under ultrasonic, and NiCl 2 ·6H 2 O and CoCl 2 ·6H 2 O is added to the carbon sphere solution at a molar ratio of 1:2, stirred and dispersed evenly, then added ammonia water, and left to stand for 5 hours to obtain a uniformly dispersed suspension; the NiCl in the suspension 2 ·6H 2 The concentration of O is 0.01mol / L, CoCl 2 ·6H 2 The concentration of O is 0.02mol / L, and the concentration of ammonia water is 0.1mol / L;

[0052] Step 2, transfer the suspension to a 100ml reactor, react at 120°C for 15h, cool the suspension to room temperature naturally, wash with deionized water and ethanol for 3 times and suction filter to remove impurities in ...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a highly-dispersed nanowire-shaped nickel-cobalt oxide material and a highly-dispersed nanowire-shaped nickel-cobalt sulfide material, and preparation methods thereof. The preparation method of the nickel-cobalt oxide comprises the following steps: 1, uniformly mixing a carbon sphere, a nickel salt, a cobalt salt and a weak alkali in deionized water, and standing the obtained solution to obtain a mixed system; 2, carrying out a reaction at 120-200 DEG C for 5-15 h, cooling the obtained system to room temperature, removing impurities, and vacuum-drying the obtained product to obtain a nickel-cobalt oxide precursor; and 3, sintering the precursor at 300-400 DEG C for 1-10 h to obtain the highly-dispersed nanowire-shaped nickel-cobalt oxide material. The preparation method of the nickel-cobalt sulfide comprises the following steps: 1, adding the nickel-cobalt oxide material to a 0.1-0.5 mol / L sodium sulfide solution to obtain a mixed system; and 2, carrying out areaction at 150-200 DEG C for 1-10 h, cooling obtained system to room temperature, removing impurities, and vacuum-drying the product to obtain the highly-dispersed nanowire-shaped nickel-cobalt sulfide material. The two materials have no substrates, and have good dispersibility.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a highly dispersed nanowire-shaped nickel-cobalt oxide and nickel-cobalt sulfide material and a preparation method thereof. Background technique [0002] Nickel cobalt oxide (NiCo 2 o 4 ) and nickel cobalt sulfide (ie NiCo 2 S 4 ) is a class of binary metal compounds with excellent electrical conductivity and electrochemical activity, and has very broad application prospects in the fields of supercapacitors and lithium-ion batteries. [0003] Nanoized NiCo 2 o 4 Electrode material and NiCo 2 S 4 The specific surface area of ​​the electrode material is large, and the non-nanometer NiCo 2 o 4 or NiCo 2 S 4 Compared with the exposed electrochemical sites, the electrochemical performance is better. However, the nano-preparation methods of these two types of materials generally use a rigid substrate, such as carbon cloth and nickel mesh, and use the induce...

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 Applications(China)
IPC IPC(8): C01G53/04C01G53/11H01G11/30H01G11/46H01M4/525H01M4/58H01M10/0525B82Y40/00
CPCC01G53/04C01G53/11H01M4/525H01M4/5815H01M10/0525H01G11/46H01G11/30B82Y40/00C01P2004/16Y02E60/10
Inventor 吴海伟王莉李志健庞小飞毕经煊王雷孟卿君
Owner SHAANXI UNIV OF SCI & TECH
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