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

Preparation method of cobalt-nickel sulfide electrode material and batteries

A cobalt-nickel sulfide and electrode material technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, hybrid capacitor electrodes, etc., can solve short cycle life, shedding or pulverization of active materials, low conductivity and other problems, to achieve uniform size, improve conductivity, and accelerate transmission speed

Inactive Publication Date: 2019-12-31
GUANGDONG UNIV OF TECH
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the application provides a preparation method and battery of a cobalt-nickel sulfide electrode material, which can effectively solve the problem that the current cobalt-nickel sulfide electrode material is prone to oxidation or phase transition, which leads to the falling off or pulverization of the active material, making it conductive. technical problems of low stability and short cycle life

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 cobalt-nickel sulfide electrode material and batteries
  • Preparation method of cobalt-nickel sulfide electrode material and batteries
  • Preparation method of cobalt-nickel sulfide electrode material and batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment is the preparation embodiment of product 1, and concrete steps are as follows:

[0045] 1. Add 87.5 mg of graphene oxide to 175 mL of ethylene glycol solution, and use an ultrasonic breaker to sonicate for 1 hour to obtain a uniformly dispersed graphene oxide dispersion with a concentration of 0.5 mg / mL; mix 0.025 mol of nickel acetate and 0.05 mol of acetic acid Cobalt and 0.075mol polyacrylic acid were dissolved in the graphene oxide dispersion, ultrasonically dispersed for 1 hour, then placed in a water bath, and stirred at 80°C for 2 hours to obtain the first product. Among them, the average molecular weight of polyacrylic acid is 2000.

[0046] 2. Add 0.1 mol thiourea to the first product, and stir at room temperature for 30 minutes to obtain the second product.

[0047]3. Pour the second product into a polytetrafluoroethylene reactor, and react at 200° C. for 12 hours to obtain the third product.

[0048] 4. The third product was washed three tim...

Embodiment 2

[0050] This embodiment is the preparation embodiment of product 2, and concrete steps are as follows:

[0051] 1. Add 350 mg of graphene oxide to 175 mL of ethylene glycol solution, and use an ultrasonic breaker to sonicate for 1 hour to obtain a uniformly dispersed 2 mg / mL graphene oxide dispersion; add 0.025 mol of nickel acetate, 0.05 mol of cobalt acetate and 0.075 mol of Polyacrylic acid was dissolved in the graphene oxide dispersion liquid, ultrasonically dispersed for 1 h, then placed in a water bath, and stirred at 80° C. for 2 h to obtain the first product. Among them, the average molecular weight of polyacrylic acid is 2000.

[0052] 2. Add 0.1 mol thiourea to the first product, and stir at room temperature for 30 minutes to obtain the second product.

[0053] 3. Pour the second product into a polytetrafluoroethylene reactor, and react at 200° C. for 12 hours to obtain the third product.

[0054] 4. The third product was washed three times with deionized water, and...

Embodiment 3

[0056] This embodiment is the preparation embodiment of product 3, and concrete steps are as follows:

[0057] 1. Add 175mg of graphene oxide to 175mL of ethylene glycol solution, and use an ultrasonic crusher to sonicate for 1 hour to obtain a uniformly dispersed 1mg / mL graphene oxide dispersion; add 0.025mol of nickel acetate, 0.05mol of cobalt acetate and 0.075mol of Polyacrylic acid was dissolved in the graphene oxide dispersion liquid, ultrasonically dispersed for 1 h, then placed in a water bath, and stirred at 80° C. for 2 h to obtain the first product. Among them, the average molecular weight of polyacrylic acid is 2000.

[0058] 2. Add 0.1 mol thiourea to the first product, and stir at room temperature for 30 minutes to obtain the second product.

[0059] 3. Pour the second product into a polytetrafluoroethylene reactor, and react at 200° C. for 12 hours to obtain the third product.

[0060] 4. The third product was washed three times with deionized water, and dried...

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
densityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of batteries, and particularly relates to a preparation method of a cobalt-nickel sulfide electrode material and batteries. The preparation method comprises the following steps: step 1, dissolving a cobalt source, a nickel source and a water-soluble high-molecular polymer in a graphene oxide solution to obtain a first product, wherein the water-solublehigh-molecular polymer is selected from a polyhydroxy polymer or / and a polycarboxyl polymer; step 2, mixing the first product with a sulfur-containing compound to obtain a second product; 3, carryingout solvothermal reaction on the second product to obtain a third product; and step 4, drying the third product to obtain the cobalt-nickel sulfide electrode material. The invention provides the preparation method of the cobalt-nickel sulfide electrode material and the batteries, so that the technical problems of low conductivity and short cycle life due to falling or pulverization of active materials caused by easy oxidation or easy phase change of the current cobalt-nickel sulfide electrode material are solved effectively.

Description

technical field [0001] The application belongs to the technical field of batteries, and in particular relates to a method for preparing a cobalt-nickel sulfide electrode material and a battery. Background technique [0002] In recent years, the limited fuel storage and the increasingly serious greenhouse effect make us increasingly need to make breakthroughs in energy storage technology to meet the requirements of low-carbon and sustainable development in the future. The rapid development of electronic devices and hybrid vehicles has stimulated the development of energy storage systems. Supercapacitors have the advantages of high power density, low cost, fast charging and discharging, and good cycle stability, and are considered to be an ideal energy storage device. Unfortunately, the specific capacitance and energy density of supercapacitors still cannot meet the practical requirements of electronic devices. [0003] Cobalt-nickel sulfide is a typical bimetallic sulfide, ...

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): C01G53/00H01G11/30B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G53/006C01P2002/72C01P2004/03C01P2004/04C01P2004/64C01P2006/40H01G11/30Y02E60/13
Inventor 张海燕赵悦陈建飞李宽段维震
Owner GUANGDONG UNIV OF 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