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

Preparation method of flaky (NH4) 2V4O9 flexible zinc ion battery electrode material

A zinc-ion battery and electrode material technology, applied in battery electrodes, active material electrodes, positive electrodes, etc., can solve the problems of rapid electrochemical performance decay, shedding, active material cracking, etc., achieving low cost, increasing contact area, Low environmental impact

Pending Publication Date: 2021-12-24
SHAANXI SCI TECH UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For traditional aqueous zinc-ion batteries, it is usually prepared by mixing active materials, conductive additives, and binders, and then coating the slurry on the current collector. The traditional electrode will appear in the process of mechanical deformation. The problem of cracking and falling off leads to rapid degradation of electrochemical performance under bending conditions

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 flaky (NH4) 2V4O9 flexible zinc ion battery electrode material
  • Preparation method of flaky (NH4) 2V4O9 flexible zinc ion battery electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1, the NH 4 VO 3 Dissolve evenly in a mixed solvent of ethylene glycol and water at a volume ratio of 1:1 at 40°C to obtain NH 4 + NH at a concentration of 0.1mol / L 4 VO 3 Solution, marked as A solution;

[0029] Step 2, take 60ml of A solution and add 0.5mL dodecyl dimethyl betaine to it, then adjust the pH to 4 with 0.5mol / L hydrochloric acid solution to obtain B solution;

[0030] Step 3: Alternately wash the carbon cloth of the flexible base material with acetone and distilled water to remove dust and impurities, then soak it in 0.5mol / L hydrochloric acid solution, dry it after washing with distilled water, and then completely immerse the flexible base material in the above B solution , and then ultrasonically react for 1h at an ultrasonic power of 200W;

[0031] Step 4, according to the filling ratio of 70%, place the B solution soaked in the flexible base material in a reaction kettle lined with polytetrachloroethylene, and react at a hydrothermal tempe...

Embodiment 2

[0035] Step 1, the NH 4 VO 3Dissolve evenly in a mixed solvent of ethylene glycol and water at a volume ratio of 1:1 at 50°C to obtain NH 4 + NH at a concentration of 0.05mol / L 4 VO 3 Solution, marked as A solution;

[0036] Step 2, take 60ml of A solution and add 0.8mL dodecyl dimethyl betaine to it, then adjust the pH to 2 with 0.2mol / L hydrochloric acid solution to obtain B solution;

[0037] Step 3: Alternately wash the carbon paper sheet of the flexible substrate material with acetone and distilled water to remove dust and impurities, then soak it in a 1mol / L hydrochloric acid solution, dry it after cleaning with distilled water, and then completely immerse the flexible substrate material in the above B solution , and then ultrasonically react at an ultrasonic power of 200W for 0.5h;

[0038] Step 4, according to the filling ratio of 50%, place the B solution soaked in the flexible base material in a reaction kettle lined with polytetrachlorethylene, and react at a ...

Embodiment 3

[0041] Step 1, the NH 4 VO 3 Dissolve evenly in a mixed solvent of ethylene glycol and water at a volume ratio of 1:1 at 50°C to obtain NH 4 + NH with a concentration of 0.18mol / L 4 VO 3 Solution, marked as A solution;

[0042] Step 2, take 60ml of A solution and add 1.2mL dodecyl dimethyl betaine to it, then adjust the pH to 3 with 0.8mol / L hydrochloric acid solution to obtain B solution;

[0043] Step 3: Alternately wash the carbon cloth of the flexible base material with acetone and distilled water to remove dust and impurities, then soak it in 0.4mol / L hydrochloric acid solution, dry it after washing with distilled water, and then completely immerse the flexible base material in the above B solution , and then ultrasonically react for 1.5h at an ultrasonic power of 300W;

[0044] Step 4, according to the filling ratio of 60%, place the B solution soaked in the flexible base material in a reaction kettle lined with polytetrachlorethylene, and react at a hydrothermal t...

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 flaky (NH4) 2V4O9 flexible zinc ion battery electrode material. The preparation method comprises the following steps: uniformly dissolving NH4VO3 in a mixed solvent of ethylene glycol and water to obtain a solution A; adding dodecyl dimethyl betaine into the solution A, and then using a diluted hydrochloric acid solution for adjusting the pH value to obtain a solution B; completely immersing a pretreated flexible substrate material into the solution B, and then carrying out ultrasonic reaction in an ultrasonic environment; placing the solution B soaked with the flexible substrate material in a reaction kettle with a lining made of polytetrachloroethylene, and carrying out hydrothermal reaction to obtain a suspension and a flexible material; and alternately cleaning the flexible material with water and ethanol respectively, and then performing vacuum drying to obtain the flaky (NH4) 2V4O9 flexible zinc ion battery electrode material. According to the preparation method, the (NH4) 2V4O9 flexible electrode with the sheet-shaped morphology is prepared through assistance of ethylene glycol and dodecyl dimethyl betaine, so that the contact area of an electrolyte and an electrode active material is increased, and active sites of zinc ion deintercalation are increased.

Description

technical field [0001] The invention belongs to the technical field of positive electrode materials for zinc ion batteries, and relates to a flake (NH 4 ) 2 V 4 o 9 Preparation method of flexible zinc-ion battery electrode material. Background technique [0002] Human development largely depends on the continuous renewal of energy. The energy in today's society mainly comes from fossil fuels such as oil, coal and natural gas, and the greenhouse effect and urban pollution caused by the consumption of these fossil fuels have attracted more and more attention. Utilizing existing energy sources, finding green and environmentally friendly new energy sources and developing new and efficient energy storage technologies are the hot and difficult points of scientific development. [0003] The secondary battery that can be recharged and discharged is an important part of energy storage technology. Since Sony Corporation first launched the commercial lithium-ion secondary battery ...

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): H01M4/36H01M4/48H01M10/36
CPCH01M4/362H01M4/48H01M10/36H01M2004/028Y02E60/10
Inventor 寇领江王勇宋佳佳艾桃桃
Owner SHAANXI 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